[FAQ] jGuru FAQ Update
jGuru maintains FAQs and Forums on Servlets, JSP, and Tomcat (as well as
many other Java topics). Here is an automated update on recent postings to
Tomcat-related FAQs. Please direct flames and feedback to [EMAIL PROTECTED] .
- Alex
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++ JavaServer Pages (JSP) FAQ: http://www.jguru.com/faq/JSP
How can I model a JSP page in UML? What stereotype should I use for JSP within a class
diagram?
http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=481436
I have a .jsp page with an included file (myPage.jsp, with lt;%@ include file =
'includedFile.jsp'gt;). When I delete or modify the included file on the server, the
old one still shows in my browser, even if I manually refresh/reload the whole page
(i.e. refresh 'myPage.jsp'). The only solution I have found is to delete the whole
page ('myPage.jsp'), and upload it again - then it includes the more recent included
file.br
The server is running Apache/Tomcat under Linux.br
http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=481051
++ Servlets FAQ: http://www.jguru.com/faq/Servlets
Why do I get the error java.lang.IllegalStateException: Header already sent ?
http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=480147
Is there a simple example of how to use web application security in WebLogic?
http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=479768
Re: Tomcat Tutorial Please!!!
What do you want information on in particular, since the Tomcat docs which come with it are pretty comprehensive.. Alex - Original Message - From: Jagadish Gopi [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, August 17, 2001 2:49 PM Subject: Tomcat Tutorial Please!!! Hi Friends, Can you please direct me to a good tutorial for tomcat coz somehow I didn't get complete information from official documentation. Please reply back Jags
Connection reset by peer: socket write error NOT harmless
Hello List!
This is my first post here, so sorry for the length.
I'm running a binary distribution of tomcat 3.2.3 on Windows NT, developing
in JDDeveloper 3.2.2.
I have a client java program which sends a simple SQL string to a servlet
which gets an image from our database and returns it. No browsers involved.
The problem I'm having is that a third of the time when I execute the client
request from my computer to the local IP address of tomcat, also running on
my computer, tomcat gives this error message:
2001-08-13 15:39:03 - Ctx( /databasefetcher ): IOException in:
( /databasefetcher + /servlet/databasefetcher + null) Connection reset by
peer: socket write error
And the file, which the client program writes to the file system, is
corrupted.
If tomcat does not give this error message, the image is fine and can be
opened and enjoyed for all of its beauty.
The images are tiffs and are about 250K in size each. Below is the code for
the fetching:
+
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException,
IOException{
//read in the SQL string
BufferedReader br = new BufferedReader(new
InputStreamReader(req.getInputStream()));
String SQL = +br.readLine();
try{
//get the image from the database
ResultSet rs = (ResultSet)Enterpriser.dealWithDbFetch(SQL, false);
InputStream isImg=null;
if(rs.next()){
isImg = rs.getBinaryStream(1);
}
//set the length to 1.3 mb, the largest image size
res.setContentLength(130);
res.setContentType(image/tif);
res.setBufferSize(130);
byte[] b = new byte[130];
//read the image into the inputstream
isImg.read( b );
//get the servlet output stream
ServletOutputStream out = res.getOutputStream();
//write the image to the response
out.write(b);
out.close();
}
catch(Exception e){
e.printStackTrace();
}
}
AND here is the code for the client program:
++
import java.net.*;
import java.io.*;
import org.xml.sax.*;
import java.util.Properties;
public class StringHttp {
// POST an XML document to a Service's URL, Returning XML document
response
public static InputStream doPost(String stringToPost, URL target)
throws IOException, ProtocolException {
// (1) Open an HTTP connection to the target URL
HttpURLConnection conn = (HttpURLConnection)target.openConnection();
if (conn == null) return null;
// (2) Use HTTP POST
conn.setRequestMethod(POST);
// (3) Indicate that the content type is plain text with appropriate
MIME type
conn.setRequestProperty(Content-type,text/plain);
// (4) We'll be writing and reading from the connection
conn.setDoOutput(true);
conn.setDoInput(true);
// (5) Print the String into the connection's output stream
PrintWriter pw = new PrintWriter( new
utputStreamWriter( conn.getOutputStream()));
pw.println( stringToPost );// etc, etc.
pw.flush();
pw.close();
// (6) Get an InputStream to read the response from the server.
InputStream responseStream = conn.getInputStream();
return responseStream;
}
public static void main(String args[]){
String SQL=Select A.MAP from a TABLE where map_id=1;
try{
URL dispatchURL = new
URL(http://192.1.1.215:8080/databasefetcher/servlet/databasefetcher;);
long start = System.currentTimeMillis();
InputStream is = StringHttp.doPost(SQL, dispatchURL);
long end = System.currentTimeMillis()-start;
System.out.println(Took + end+ millis);
byte[] b = new byte[130];
is.read(b);
FileOutputStream fos = new FileOutputStream(new
File(C:\\imgTest3.tif));
fos.write(b);
}
catch(Exception e){
e.printStackTrace();
}
}
}
+
I've seen a number of posts on this subject and the answer always seems to
have to do with IE. I'm not using it. Though sometimes IIS starts up
acidentally, cutting apache out of the loop.
Any help is greatly appreciated.
Thanks,
Alex
RE: Connection reset by peer: socket write error NOT harmless
Just to give you some more background info(you being the kind hearted soul
who read my last post) The image is ALWAYS corrupted if I run the client
program from another machine on our local network.
Also, if I add the following line of code to the servlet:
out.flush();
sandwiched between:
out.write(b);
out.close();
I get a much more robust error, namely:
java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite(Native Method)
at java.net.SocketOutputStream.write(SocketOutputStream.java:83)
Thanks again .
Alex
-Original Message-
From: alex reuter [mailto:[EMAIL PROTECTED]]
Sent: Monday, August 13, 2001 4:10 PM
To: [EMAIL PROTECTED]
Subject: Connection reset by peer: socket write error NOT harmless
Hello List!
This is my first post here, so sorry for the length.
I'm running a binary distribution of tomcat 3.2.3 on Windows NT, developing
in JDDeveloper 3.2.2.
I have a client java program which sends a simple SQL string to a servlet
which gets an image from our database and returns it. No browsers involved.
The problem I'm having is that a third of the time when I execute the client
request from my computer to the local IP address of tomcat, also running on
my computer, tomcat gives this error message:
2001-08-13 15:39:03 - Ctx( /databasefetcher ): IOException in:
( /databasefetcher + /servlet/databasefetcher + null) Connection reset by
peer: socket write error
And the file, which the client program writes to the file system, is
corrupted.
If tomcat does not give this error message, the image is fine and can be
opened and enjoyed for all of its beauty.
The images are tiffs and are about 250K in size each. Below is the code for
the fetching:
+
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException,
IOException{
//read in the SQL string
BufferedReader br = new BufferedReader(new
InputStreamReader(req.getInputStream()));
String SQL = +br.readLine();
try{
//get the image from the database
ResultSet rs = (ResultSet)Enterpriser.dealWithDbFetch(SQL, false);
InputStream isImg=null;
if(rs.next()){
isImg = rs.getBinaryStream(1);
}
//set the length to 1.3 mb, the largest image size
res.setContentLength(130);
res.setContentType(image/tif);
res.setBufferSize(130);
byte[] b = new byte[130];
//read the image into the inputstream
isImg.read( b );
//get the servlet output stream
ServletOutputStream out = res.getOutputStream();
//write the image to the response
out.write(b);
out.close();
}
catch(Exception e){
e.printStackTrace();
}
}
AND here is the code for the client program:
++
import java.net.*;
import java.io.*;
import org.xml.sax.*;
import java.util.Properties;
public class StringHttp {
// POST an XML document to a Service's URL, Returning XML document
response
public static InputStream doPost(String stringToPost, URL target)
throws IOException, ProtocolException {
// (1) Open an HTTP connection to the target URL
HttpURLConnection conn = (HttpURLConnection)target.openConnection();
if (conn == null) return null;
// (2) Use HTTP POST
conn.setRequestMethod(POST);
// (3) Indicate that the content type is plain text with appropriate
MIME type
conn.setRequestProperty(Content-type,text/plain);
// (4) We'll be writing and reading from the connection
conn.setDoOutput(true);
conn.setDoInput(true);
// (5) Print the String into the connection's output stream
PrintWriter pw = new PrintWriter( new
utputStreamWriter( conn.getOutputStream()));
pw.println( stringToPost );// etc, etc.
pw.flush();
pw.close();
// (6) Get an InputStream to read the response from the server.
InputStream responseStream = conn.getInputStream();
return responseStream;
}
public static void main(String args[]){
String SQL=Select A.MAP from a TABLE where map_id=1;
try{
URL dispatchURL = new
URL(http://192.1.1.215:8080/databasefetcher/servlet/databasefetcher;);
long start = System.currentTimeMillis();
InputStream is = StringHttp.doPost(SQL, dispatchURL);
long end = System.currentTimeMillis()-start;
System.out.println(Took + end+ millis);
byte[] b = new byte[130];
is.read(b);
FileOutputStream fos = new FileOutputStream(new
File(C:\\imgTest3.tif));
fos.write(b);
}
catch(Exception e){
e.printStackTrace();
}
}
}
+
I've seen a number of posts on this subject and the answer always seems to
have to do with IE. I'm not using it. Though sometimes IIS starts up
acidentally, cutting apache out
Encoding =. Catalina does not understand http parameter with un-encoded equal sign inside param value
Hello Catalina does not understand http parameter with un-encoded equal sign inside i.e. myparam=fname='alex';lname='roytman' It use to work in Tomcat 3.x and I wonder if equal sign in parameter value has to be encoded according to specs or not
Catalina. Class Loader problem. java.lang.LinkageError: duplicate class definition
Hello, I am getting this error when hit my web page first time. What is the most puzzling that after few retries it works no more errors. There is no duplicate class paths in my class path and WEB-INF/class(lib) I would really appreciate if you can point me in right direction Alex java.lang.LinkageError: duplicate class definition: com/peacetech/webtools/tomcat/factory/PropertiesFactory at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:486) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111) at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappCla ssLoader.java:1475) at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader .java:836) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader .java:1215) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader .java:1098) at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFact ory.java:125) at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304) at org.apache.naming.NamingContext.lookup(NamingContext.java:835) at org.apache.naming.NamingContext.lookup(NamingContext.java:181) at org.apache.naming.NamingContext.lookup(NamingContext.java:822) at org.apache.naming.NamingContext.lookup(NamingContext.java:181) at org.apache.naming.NamingContext.lookup(NamingContext.java:822) at org.apache.naming.NamingContext.lookup(NamingContext.java:194) at org.apache.naming.SelectorContext.lookup(SelectorContext.java:183) at javax.naming.InitialContext.lookup(InitialContext.java:350) at com.peacetech.webtools.fw.ServletHelper.init(ServletHelper.java:44) at com.peacetech.webtools.fw.XServletHelper.init(XServletHelper.java:101) at com.peacetech.webtools.taglib.TagBase.getHelper(TagBase.java:79) at com.peacetech.webtools.taglib.TagBase.doStartTag(TagBase.java:53) at com.peacetech.webtools.taglib.XsltFileTransformTag.doStartTag(XsltFileTr ansformTag.java:28) at com.peacetech.webtools.taglib.TabPanelTag.doStartTag(TabPanelTag.java:19 ) at org.apache.jsp._0002fmain_0002dmenu_0002dtabs_jsp._jspService(_0002fmain _0002dmenu_0002dtabs_jsp.java:91) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServle t.java:200) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:456) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica tionFilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt erChain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv e.java:243) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:566) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4 72) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv e.java:219) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:566) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authenticator Base.java:472) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:564) at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.ja va:246) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:564) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4 72) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:225 1) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java :164) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:566) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:446 ) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:564) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4 72) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve. java:163) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.ja va:566
Catalina. Resource factory gets re-created on every resource lookup!
Hello I am not sure it is desired behavior so I would like to bring it to your attention New instance of my factory gets created every time I lookup up a resource in the environment. i.e. Context ctx = new InitialContext(); DataSource ds = (DataSource)ctx.lookup(java:comp/env/jdbc/usorg); causes new instance of my connection pool be created. I can certainly work around the problem (have static hash of connection pools by JNDI name) but I would like to hear your opinion Thank you very much Alex Roytman
Catalina. Jasper generates invalid java code
The problem with this piece of code generated for my JSP by tomcat4.0b6
is that it catches Throwable t and then call
pageContext.handlePageException(t) which takse Exception NOT throwable
!! as parameter as a result I am getting class cast exception:
org.apache.jasper.JasperException: Unable to compile class for
JSPnullD:\java\apache\tomcat4\work\localhost\usorg\_0002forgunits_jsp.ja
va:225: Incompatible type for method. Explicit cast needed to convert
java.lang.Throwable to java.lang.Exception.
if (pageContext != null) pageContext.handlePageException(t);
^
1 error
==
} catch (Throwable t) {
if (out != null out.getBufferSize() != 0)
out.clearBuffer();
if (pageContext != null) pageContext.handlePageException(t);
} finally {
if (_jspxFactory != null)
_jspxFactory.releasePageContext(pageContext);
}
==
Adding contextPpath and realPath to tomcat environment jndi
Hello I would like to propose to add several things to tomcat's context's environment jndi when a context gets created Specifically I am interested in context path, context real path and any other tomcat context runtime info If it will not violate security I would be happy if Context itself can be looked up via jndi. One of the uses of this kind of information will be to help jndi object factories which need this info to read its metadata from WEB-INF directory (i.e. many Object/Relational mappers need access to their metadata to be initialized). It is possible to use Environment entries for this purpose but it will be deployment nightmare because we will need to hardcode real path to context. If you think that this case is well justified it would be great if we could add it to Servlet specs Alex
RE: Catalina: How to specify factory class name for a Resource inserver.xml
Craig, Thank you very much for your help. I have one more question. Why new instance of my factory gets created every time I lookup for a resource created by this factory? -Original Message- From: Craig R. McClanahan [mailto:[EMAIL PROTECTED]] Sent: Tuesday, August 07, 2001 5:05 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: Catalina: How to specify factory class name for a Resource inserver.xml On Tue, 7 Aug 2001, Roytman, Alex wrote: Hello, I am writing several jndi factories for catalina's JNDI implementation and I am trying to figure out how to specify factory class for a resource. The only sample I found was Resource name=jdbc/usorg auth=CONTAINER type=javax.sql.DataSource/ and factory class for type=javax.sql.DataSource is hard coded. How do I specify factory class for my resource? In server.xml, you configure the actual resource with a ResourceParams, which can have nested parameter entries. Use a parameter named FACTORY to define the fully qualified clas name of the resource factory class itself. Alternatively, you can pass system properties that define the factory for a particular resource type. For example, to set the factory class name for a resource type com.mycompany.Foo, you could say: export \ CATALINA_OPTS=-Dcom.mycompany.Foo.Factory=com.mycompany.MyFooFactory before starting Tomcat 4. Thank you very much Alex Roytman Craig
Need icon
Hi, I am creating an install script for tomcat and I need an icon for the windows shortcut. Anyone out there have one for tomcat that they could send to me? Thanks Alex
JRE
Hi, I am creating a set-up file for Tomcat. Can it run with the JRE 1.3 or does it need the full JDK? Thanks Alex Alex Colic.vcf
[FAQ] jGuru FAQ Update
jGuru maintains FAQs and Forums on Servlets, JSP, and Tomcat (as well as many other Java topics). Here is an automated update on recent postings to Tomcat-related FAQs. Please direct flames and feedback to [EMAIL PROTECTED] . - Alex SPONSORED BY developerWorks need it? get it. tools, code and tutorials for open-standards based development. Stay informed with dW's weekly email newsletter http://www.jguru.com/misc/register_devworks.jsp?src=notify - Hi. You asked to be notified weekly when certain jGuru.com items get new entries. You can shut email notification off at the FAQ home page(s) or: http://www.jguru.com/guru/notifyprefs.jsp ++ JavaServer Pages (JSP) FAQ: http://www.jguru.com/faq/JSP My app is in Japanese, and I'm running Tomcat 3.2 and JDK 1.3.1. I am including a header on a main page using the ttfont size=3lt;%@ include file %gt/font/tt directive. At the top of the main page, I first specify the JSP page directive (to set this JSP translation's content type and character set), then include the header file. ttfont size=3pre lt;%@ page contentType=text/html; charset=shift_jis%gt; lt;%@ include file=header.jsp %gt; /pre/font/tt The content from the main file renders correctly in the browser as shift-jis characters, but the content in the header is the kind of ?z?[???R??? junk that anyone who has wrestled with non-Latin1 is most likely familiar with. (Cultural sidenote- the Japanese call that moji-bake or letter ghost).p Anyway, since you can only specify the contentType property once per page translation (Tomcat throws an error if you try), how can I tell Tomcat that my included page is in shift_jis too?p I found a Sun document in which the following was written:p iThe page directive applies to an entire JSP file and any static files it includes with the Include Directive or ttfont size=3lt;jsp:includegt;/font/tt, which together are called a translation unit./ip So, is this a Tomcat bug? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=468049 From what I know, I should put the path of properties file in the Classpath. While I am developing a web application, I want to host multiple sites in one machine. So how can I use two different properties file? If I specify them in the Classpath, then the first one will be used according to order of the Classpath since both properties files have the same filename. http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=466998 I have an application which use a shared library libjchli.so, I have LD_LIBRARY_PATH set to the right dirctory and it works fine. When I tried to convert it to JSP, I got an error message: brjava.lang.UnsatisfiedLinkError: no jchli in java.library.pathbr Apparently libjchli.so is not loaded. Where should the library file be located? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=465753 We have a large JSP from which users are taken to diffent screens and based on the values entered there , the fields in this main jsp are updated. Now, we are reloading the entire jsp each time whenever the control comes back. Instead of this is it possible to reload just that part of the jsp which has changed and read other parts from the cache? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=463941 What procedure must be followed to read and write encrypted cookies to the browser. What's the role of encoding in this ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=463936
ref: JRE
Sorry about the v card. It gets attached automatically to my e-mails. Let me elaborate about my requirements. I have created a set-up that uses the jre 1.3 but when I start tomcat I get errors about class files not being instantiated. If I install tomcat using the jdk then I do not get those errors. This lead me to believe that you need the full jdk to install and run Tomcat. Is this correct? Regards Alex
Re: WebappClassLoader question
Hola Nacho, Ignacio J. Ortega wrote: I'm lost here, where you put the Junit.jar? , because it will be on some place? no? to allow you load classes from , no?, i think you need the entire inheritance chain for resolving dependencies, so you need Junit.jar in some place in classpath AFAIK.. this is the simple dumb explanation i know, but is what i'm seeing on your example.. You're absolutely right here, Vincent's exception is raised because he doesn't have junit.jar in his classpath. The problem is, Cactus (Jakarta's J2EE testing package) raises an exception if junit.jar is not found; it should catch the exception and kindly explain the situation to the user. Right now, the exception is raised in a strange place, and thus the user is faced with an abstruse error. That's what Vincent is trying to solve. [Si los dos somos españoles, qué hacemos hablando en inglés? :] Un saludo, Alex. Can you make a simple main example trying to do what you want to do, without involving a servlet container.. i dont know how you can load ( using reflection for it doesnt matter ) a class without his entire inheritance chain present ... Only a wild thought, i'm not an expert on anything so... take it me too seriously .. :) Saludos , Ignacio J. Ortega
Re: window200+iis+tomcat3.2 ¿¬µ¿ÀÌ °¡´ÉÇÑ°¡¿©?
Hi, Á¦ÇØ¿í! We cannot read Korean on the list. Besides, it should be ¶È °°ÀÌ isapiÇÊÅÍ¿¡¼ ÇØ°á Çߴµ¥ :) ¹æ¹ýÀÌ ¾ø°Ú½À´Ï±î, Alex. Á¦ÇØ¿í wrote: window200+iis+tomcat3.2 ¿¬µ¿ÀÌ °¡´ÉÇÑ°¡¿©? °¡´ÉÇÏ´Ù¸é °°Àº ¹æ¹ýÀ¸·Î ÇÏ¸é µË´Ï±î »ç½Ç ¶È °°ÀÌ Çߴµ¥ isapiÇÊÅÍ¿¡¼ »¡°£ È»ìÇ¥°¡ ¾Æ·¡·Î Ç×ÇÏ°í ÀÖ°í ¿ì¼±¼øÀ§µµ ¾Ë¼ö¾øÀ½À¸·Î ³ª¿À´Â ±º¿ä.. ¾î¶»°Ô ÇØ°á ¹æ¹ýÀÌ ¾ø°Ú½À´Ï±î?
[FAQ] jGuru FAQ Update
jGuru maintains FAQs and Forums on Servlets, JSP, and Tomcat (as well as many other Java topics). Here is an automated update on recent postings to Tomcat-related FAQs. Please direct flames and feedback to [EMAIL PROTECTED] . - Alex SPONSORED BY developerWorks need it? get it. tools, code and tutorials for open-standards based development. Stay informed with dW's weekly email newsletter http://www.jguru.com/misc/register_devworks.jsp?src=notify - Hi. You asked to be notified weekly when certain jGuru.com items get new entries. You can shut email notification off at the FAQ home page(s) or: http://www.jguru.com/guru/notifyprefs.jsp ++ JavaServer Pages (JSP) FAQ: http://www.jguru.com/faq/JSP I am trying to implement a RMI server that has a static variable. Is there anyway the clients can access this static variable on the server side and modiy it. After modification, is the change visible in other clients. http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=463463 Is there a way to access the HttpSession object of a different web application which is running on the same server? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=463461 Why do Frames suck? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=460110 I am writting an application in javabeans and jsp. When I run the application I have some output and the internal servlet error: attempt to clear a buffer that is already been flushed. My application is running under Tomcat 3.2.2. http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=459355 How do I process gb2312-encoded characters within JSP? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=459354 ++ Servlets FAQ: http://www.jguru.com/faq/Servlets How can I display bar codes in my Java program? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=462245 Why do Frames suck? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=460110 When downloading a file to a client, how can I inform the client of the file size, so it can predict how long it will take? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=460092 How do I download several files at the same time? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=460087
Re: WebappClassLoader question
Hi Vincent!
I've run into the same situation a couple of times, when one class uses
a second class, and this second class uses a third one that is not
present.
1st - 2nd - 3rd (missing)
One would think that instantiating the 2nd should give an error, but
that loading the 2nd and/or instantiating the 1st should be ok. In fact,
all of the behaviors raise exceptions.
The following paragraph in ClassLoader javadoc might be of help:
The methods and constructors of objects created by a class loader may
reference other classes. To determine the class(es) referred to, the
Java virtual machine calls the loadClass method of the class loader that
originally created the class.
Or, to find out what the JVM is doing, the spec is here:
http://java.sun.com/docs/books/vmspec/
Hope it helps.
Un saludo,
Alex.
Vincent Massol wrote:
Hi,
Here is the situation :
* I have a class that makes use of JUnit (by extending the JUnit
TestCase class). Let's call it ServletTestCase
* I have a second class that is used to call a method in
ServletTestCase, let's call it MyProxyClass
* I have a third class (a servlet) that does _not_ make use of JUnit.
Let's call it ServletTestRedirector. This class actually instanciate
MyProxyClass and calls one of its method.
* I package these classes in a war file and I _don't_ include
junit.jar in this war file
When I access the servlet, I get a ClassNotFoundException on a JUnit
class. So far it is normal ...
When I debugged it, I have actually found that the error was happening
when ServletTestRedirector was instancianting MyProxyClass (which does
_not_ make use of JUnit) and before it was calling its method.
Here is the stack trace I got :
java.lang.NoClassDefFoundError: junit/framework/TestCase
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:486)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111)
at
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1475)
at
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:836)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1215)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1098)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
at
org.apache.commons.cactus.server.ServletTestRedirector.doPost(ServletTestRedirector.java:143)
Here is what I imagined is happening (tell me if this correct or wrong
!) :
As MyProxyClass is within the war file, the WebappClassLoader gets
called to load it. The WebappClassLoader, in trying to find out the
correct class, actually loads some other class in memory, and thus the
ServletTestCase, which fails to load because the junit jar is not in
the classpath.
Is that correct ?
Don't you find it strange that the error about the missing class is
reported when calling a class that has nothing to do with the problem
? It gets very hard to catch errors ...
For example, in MyProxyClass, the code that calls the ServletTestCase
method is as follows :
ServletTestCase testInstance = null;
try {
testClass = Class.forName(theClassName);
Constructor constructor = testClass.getConstructor(new
Class[] { String.class });
testInstance =
(ServletTestCase)constructor.newInstance(new Object[] { theMethod });
} catch (Exception e) {
logger.debug(Error instanciating class [ + theClassName
+ ], e);
e.printStackTrace();
throw new ServletException(Error instanciating class [ +
theClassName + ], e);
}
And there is never any exception caught here because the error
happens earlier in the call stack, when the ServletTestRedirector
instanciates MyProxyClass ...
... or am I missing something ? :)
Thanks
-Vincent Massol
[FAQ] jGuru FAQ Update
jGuru maintains FAQs and Forums on Servlets, JSP, and Tomcat (as well as many other Java topics). Here is an automated update on recent postings to Tomcat-related FAQs. Please direct flames and feedback to [EMAIL PROTECTED] . - Alex SPONSORED BY developerWorks need it? get it. tools, code and tutorials for open-standards based development. Stay informed with dW's weekly email newsletter http://www.jguru.com/misc/register_devworks.jsp?src=notify - Hi. You asked to be notified weekly when certain jGuru.com items get new entries. You can shut email notification off at the FAQ home page(s) or: http://www.jguru.com/guru/notifyprefs.jsp ++ JavaServer Pages (JSP) FAQ: http://www.jguru.com/faq/JSP How can I use a JSP as an Apache ErrorDocument -- so Apache will display bits/b errors using my JSP? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=458488 How do I implement a hit counter in Servlets or JSP? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=456418 Why do I get java.lang.NoClassDefFoundError: sun/tools/javac/Main ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455768 While forwarding from one page to another by using RequestDispatcher, how do I avoid the error quot; OutputStream is already being used for this requestquot; ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455248 What is Ant? Do I need it to run Tomcat? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455192 ++ Servlets FAQ: http://www.jguru.com/faq/Servlets How can I automatically invoke a servlet at regular time intervals using Resin? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=458416 How do I trap a 404 error inside my servlet if my servlet does a ttRequestDispatcher/tt to a non-existent page ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=457102 How do I implement a hit counter in Servlets or JSP? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=456418 Why do I get java.lang.NoClassDefFoundError: sun/tools/javac/Main ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455768 Is there a way in Tomcat to set up zones for servlets like in jserv? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455766 What is the difference between ServletContext.getInitParameter() and HttpServlet.getInitParameter() ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455711 How do I prevent users from viewing the contents of my WEB-INF directory? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455249 While forwarding from one page to another by using RequestDispatcher, how do I avoid the error quot; OutputStream is already being used for this requestquot; ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455248 How to allow the client to download and execute a .bat file? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455219 Can I spawn a background thread from my servlet? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455215 How can I generate an output in CSV format from a database query? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455207 What is a session and why is it required? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455205 How to allow the client to download and execute a .bat or .exe file? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455202 Why do I sometimes get the error ODBC Driver Manager ...function Sequence Error? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455201 How do I process FDF files created by the Acrobat Forms plug-in? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455199 ++ Tomcat FAQ: http://www.jguru.com/faq/Tomcat How can I use a JSP as an Apache ErrorDocument -- so Apache will display bits/b errors using my JSP? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=458488 Why do I get java.lang.NoClassDefFoundError: sun/tools/javac/Main ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455768 Is there a way in Tomcat to set up zones for servlets like in jserv? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455766 How do I upgrade from Tomcat 3 to Tomcat 4? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455735 Do I need to create my own web.xml file? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455725 What is the right way to set the JAVA_HOME environment variable on Windows NT? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455718 How do you pass options such as -Xrs to the JVM when your Tomcat container is running in-process within a Web
Re: Tomcat: subject
Hi Jerry! Li, Jerry wrote: We have been flooded by emails from the mailing lists of CVS, apache, tomcat, and so on. All of them come into our inbox, it is very tough to separate them. If you send emails with Tomcat in the subject, we could easily group them and redirect them into a dedicated folder. For example, Windows user may create a rule in outlook to redirect all emails with Tomcat in the subject to a folder called Tomcat. Instead of all of us taking the effort, we might ask the list owner to add '[Tomcat]' to the subject. On second thought, instead of all getting messages with '[Tomcat]' in the subject, you might set up filters based in the sender of a message. As a Tomcat user, you have become part of an Open Source community. That means that you're ready to give at least part of what you take -- since money is not the issue here (surprise!), it's effort. If you have a problem, try to solve it yourself -- and then help others with the same problem. Un saludo, Alex.
Re: Class reloading
In fact, Tomcat does support automatic reloading of classes. When you declare a context, add a 'reloadable=true' attribute: Context path=/admin docBase=webapps/admin reloadable=true trusted=false See apps-admin.xml or server.xml for an example. In Tomcat 3.2.1, this feature did not always work well, especially with JSPs; in Tomcat 3.3 I cannot remember if it was enabled yet. Un saludo, Alex. Paul Foxton wrote: AFAIK tomcat doesn't support automatic reloading of classes. You do have to restart. Paul -Original Message- From: John Baker [mailto:[EMAIL PROTECTED]] Sent: 19 July 2001 11:36 To: [EMAIL PROTECTED] Subject: Class reloading Hello. If I write a class and use it in a jsp page, then change the class, I have to restart tomcat. Is there any way I can get around this, ie tell tomcat to reload the class (and forget about the cached loaded copy I expect it has). John -- John Baker, BSc CS. Java developer, Linux lover. I don't wanna rock, DJ.
Re: Double Click
Hi Jianming! I don't understand your problem. When users click on a link, a new page appears. So, what is the problem? Perhaps you want to say that users click a second time after the request has got to the server (and the DB updated), but before the response gets to them. In this case, you'd want to ignore the second request. This then should be easy: if you find the data already updated in the DB, then do nothing. Un saludo, Alex. Wang, Jianming wrote: Hi, I have an hyperlink, when user click on it, it will update the database. My question is how can I deal with the case when user double click on the link? Thank you in advance for your help. JW.
Re: Tomcat 4.0 release date?
Hi Jon! Jonathan Eric Miller wrote: Anyone have any ideas on when Tomcat 4.0 might be released? Tomcat 4.0 will be the reference implementation of servlet spec 2.3, which isn't still out. Therefore, it cannot be released until the spec is ready and finished -- which should be around september, I hear. I see that it's currently in Beta 5 whereas 3.3 is only at milestone 4. Yes, and they target different audiences. If you are using JDK 1.1 and servlet spec 2.2 is fine for you, you'll want Tomcat 3.3. Otherwise, wait for the final release. Yet, from what I've read, both releases are quite stable right now. My experience with milestones 2, 3 and 4 has been very satisfactory. As far as I can tell, milestones are actually Alphas. Why not name them as such? 'Alpha' is a commercial term. From the developer's perspective, you reach milestones and may choose to publish them. Since this is an Open Source project, you get access even to the nightly builds -- so you can test it early on and bugs are pinned up as soon as possible. However, don't let this fact fool you about the quality of the milestone releases -- just download it and see. If you find any bugs, don't forget to report them in Bugzilla. Is 4.0 expected to be released before 3.3? If so, what's the point of 3.3? I hope it's clear now :) The developers say that v3.3 is an evolution, while v4 is a revolution -- a completely different codebase. You might say that v3.3 is v3.2.1 refactored, slimmed down and faster. As you may have heard, v3.2's major pitfall was speed: everyone claimed to be superior. v3.3 is vastly improved in that regard, and code is better organized. v4 will probably be very fast too, since a lot of great developers are working on it. Un saludo, Alex.
Re: Double Click
Hi again! Wang, Jianming wrote: I have two frames, let's say left frame and right frame, in my app. The left frame contains a list of names. When use clicks on one of them, the db is updated using the selected name and result is sent back to the right frame. Aha, that clarifies your problem a lot. I suppose it won't be difficult to check the db beforehand if data has already been updated? Un saludo, Alex. Thanks. JW. -Original Message- From: Alex Fernández [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 18, 2001 12:03 PM To: [EMAIL PROTECTED] Subject: Re: Double Click Hi Jianming! I don't understand your problem. When users click on a link, a new page appears. So, what is the problem? Perhaps you want to say that users click a second time after the request has got to the server (and the DB updated), but before the response gets to them. In this case, you'd want to ignore the second request. This then should be easy: if you find the data already updated in the DB, then do nothing. Un saludo, Alex. Wang, Jianming wrote: Hi, I have an hyperlink, when user click on it, it will update the database. My question is how can I deal with the case when user double click on the link? Thank you in advance for your help. JW.
[FAQ] jGuru FAQ Update
jGuru maintains FAQs and Forums on Servlets, JSP, and Tomcat (as well as many other Java topics). Here is an automated update on recent postings to Tomcat-related FAQs. Please direct flames and feedback to [EMAIL PROTECTED] . - Alex SPONSORED BY developerWorks need it? get it. tools, code and tutorials for open-standards based development. Stay informed with dW's weekly email newsletter http://www.jguru.com/misc/register_devworks.jsp?src=notify - Hi. You asked to be notified daily when certain jGuru.com items get new entries. You can shut email notification off at the FAQ home page(s) or: http://www.jguru.com/guru/notifyprefs.jsp ++ Servlets FAQ: http://www.jguru.com/faq/Servlets How do I trap a 404 error inside my servlet if my servlet does a ttRequestDispatcher/tt to a non-existent page ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=457102
Re: Question about copyright
Hi Zhang! zhang heng chong wrote: I am sorry for interrupted you. I have a question about software copyright. I downloaded tomcat,apache from jakarta.apache.org,and I read licence. I am puzzled whether those softwares can be used by a profit-making company website . Yes, it can. You can use the software for any purpose you like. You accept to use Tomcat at your own risk: that means that you cannot blame whatever problems you find on the Apache Group. Say, if your entire hard disk is wiped out by Tomcat, you cannot sue them. You cannot use the names 'Apache' or 'Tomcat' to endorse your product. That means you cannot announce your company as 'wonderfulsite.com -- endorsed by Apache', or 'wonderfulsite.com -- the preferred Tomcat site'. If you want to distribute Tomcat, you must follow the conditions expressed in the license: do not remove copyright notices nor authorship notices. Un saludo, Alex.
Re: regarding tomcat run in background on win nt
Dhaval Patel wrote: respected sir, my self is dhaval working in java from last 2 years now i want to know that what should i to run the tomcat server in background processes even if I log off my NT session is this possible and if yes then please give me some clue about it bcoz right now I am in great hurry in my project reply asap thanking with anticipation regards - dhaval Read the FAQ: http://www.jguru.com/faq/view.jsp?EID=13457 Also the Tomcat documentation is very helpful. Read the docs, they are your friend.
[FAQ] jGuru FAQ Update
jGuru maintains FAQs and Forums on Servlets, JSP, and Tomcat (as well as many other Java topics). Here is an automated update on recent postings to Tomcat-related FAQs. Please direct flames and feedback to [EMAIL PROTECTED] . - Alex SPONSORED BY developerWorks need it? get it. tools, code and tutorials for open-standards based development. Stay informed with dW's weekly email newsletter http://www.jguru.com/misc/register_devworks.jsp?src=notify - Hi. You asked to be notified daily when certain jGuru.com items get new entries. You can shut email notification off at the FAQ home page(s) or: http://www.jguru.com/guru/notifyprefs.jsp ++ JavaServer Pages (JSP) FAQ: http://www.jguru.com/faq/JSP How do I implement a hit counter in Servlets or JSP? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=456418 Why do I get java.lang.NoClassDefFoundError: sun/tools/javac/Main ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455768 ++ Servlets FAQ: http://www.jguru.com/faq/Servlets How do I implement a hit counter in Servlets or JSP? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=456418 Why do I get java.lang.NoClassDefFoundError: sun/tools/javac/Main ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455768 ++ Tomcat FAQ: http://www.jguru.com/faq/Tomcat Why do I get java.lang.NoClassDefFoundError: sun/tools/javac/Main ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455768
[FAQ] jGuru FAQ Update
jGuru maintains FAQs and Forums on Servlets, JSP, and Tomcat (as well as many other Java topics). Here is an automated update on recent postings to Tomcat-related FAQs. Please direct flames and feedback to [EMAIL PROTECTED] . SPONSORED BY developerWorks need it? get it. tools, code and tutorials for open-standards based development. Stay informed with dW's weekly email newsletter http://www.jguru.com/misc/register_devworks.jsp?src=notify - Hi. You asked to be notified daily when certain jGuru.com items get new entries. You can shut email notification off at the FAQ home page(s) or: http://www.jguru.com/guru/notifyprefs.jsp ++ JavaServer Pages (JSP) FAQ: http://www.jguru.com/faq/JSP While forwarding from one page to another by using RequestDispatcher, how do I avoid the error quot; OutputStream is already being used for this requestquot; ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455248 What is Ant? Do I need it to run Tomcat? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455192 ++ Servlets FAQ: http://www.jguru.com/faq/Servlets Is there a way in Tomcat to set up zones for servlets like in jserv? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455766 What is the difference between ServletContext.getInitParameter() and HttpServlet.getInitParameter() ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455711 How do I prevent users from viewing the contents of my WEB-INF directory? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455249 While forwarding from one page to another by using RequestDispatcher, how do I avoid the error quot; OutputStream is already being used for this requestquot; ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455248 How to allow the client to download and execute a .bat file? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455219 Can I spawn a background thread from my servlet? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455215 How can I generate an output in CSV format from a database query? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455207 What is a session and why is it required? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455205 How to allow the client to download and execute a .bat or .exe file? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455202 Why do I sometimes get the error ODBC Driver Manager ...function Sequence Error? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455201 How do I process FDF files created by the Acrobat Forms plug-in? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455199 ++ Tomcat FAQ: http://www.jguru.com/faq/Tomcat Is there a way in Tomcat to set up zones for servlets like in jserv? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455766 How do I upgrade from Tomcat 3 to Tomcat 4? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455735 Do I need to create my own web.xml file? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455725 What is the right way to set the JAVA_HOME environment variable on Windows NT? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455718 How do you pass options such as -Xrs to the JVM when your Tomcat container is running in-process within a Web server? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455716 If I deploy a WAR file while Tomcat is running, is there a way to load (or reload) it without restarting Tomcat? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455587 Using Struts 1.0, why do I get the error cant remove Attributes from request scope? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455577 Can Tomcat be started as a user other than root under Unix? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455567 Is there any way to avoid servlet.log being deleted on restart of tomcat? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455369 When reloading a servlet that uses JNI, why do I get java.lang.UnsatisfiedLinkError: Native Library D:\WINNT\mynamesearch.dll already loaded in another classloader ? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455360 What is the password for the Tomcat admin webapp? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455354 How do I prevent users from viewing the contents of my WEB-INF directory? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455249 What is Ant? Do I need it to run Tomcat? http://www.jguru.com/misc/faqtrampoline.jsp?src=notifyEID=455192 How do I stop all running instances of Tomcat?
Jasper compiler from the command line
Hi, I've been developing a webapp with Tomcat for a while now and one of the problems I keep running up against is that when I make changes to my underlying beans (ie. change of method signature) which are used by the jsp pages in my webapp that I sometimes forget to make the necessary changes across all jsps in the webapp which make use of the changed beans. To help avoid this problem I created an ANT task to automate running the Jasper compiler (see my recent message on [EMAIL PROTECTED]). And then let ANT report the compilation problems to me. Before I was able to get this task to run I had to make some modifications to the jasper compiler because it wasn't operating properly for my jsps. The problem was that in my jsps I make use of static includes which are referenced via relative file paths in the %@include file=../include.jsp% directive by jsps which are in various subdirectories of the webapp. This was causing problems for the jasper compiler because the context wasn't being set properly in the CommandLineContext.java object to be able to handle relative includes in pages which were in some subdirectory of the webapp. Anyways, I made some small changes to the constructor of CommandLineContext to fix the problem. It works properly now, and it doesn't seem to introduce any other problems. I've attached my version of CommandLineContext.java as well as a diff file. Hopefully someone with more appropriate access levels can look over and check-in the changes. The diff file is a little screwy for some reason, but I'm not good enough with CVS to be able to figure how to fix it. If you have any questions send me a reply. Thanks Alex. P.S. Thanks to all the people who work on Tomcat. I've been using it since the first beta and it just keeps on getting better. /* * $Header: /home/cccvs/cc/working/alex/CommandLineContext.java,v 1.2 2001/07/15 00:42:42 cccvs Exp $ * $Revision: 1.2 $ * $Date: 2001/07/15 00:42:42 $ * * * * The Apache Software License, Version 1.1 * * Copyright (c) 1999 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright *notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright *notice, this list of conditions and the following disclaimer in *the documentation and/or other materials provided with the *distribution. * * 3. The end-user documentation included with the redistribution, if *any, must include the following acknowlegement: * This product includes software developed by the *Apache Software Foundation (http://www.apache.org/). *Alternately, this acknowlegement may appear in the software itself, *if and wherever such third-party acknowlegements normally appear. * * 4. The names The Jakarta Project, Tomcat, and Apache Software *Foundation must not be used to endorse or promote products derived *from this software without prior written permission. For written *permission, please contact [EMAIL PROTECTED] * * 5. Products derived from this software may not be called Apache *nor may Apache appear in their names without prior written *permission of the Apache Group. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * http://www.apache.org/. * */ package org.apache.jasper; import java.io.*; import org.apache.jasper.compiler.JspReader; import org.apache.jasper.compiler.ServletWriter; import org.apache.jasper.compiler.TagLibraries; import org.apache.jasper.compiler.CommandLineCompiler; import org.apache.jasper.compiler.Compiler; //import org.apache.jasper.runtime.JspLoader; // Use the jasper
Re: strange way to start tomcat
Hi Kris, thanks for the answer. I have narrowed down the problem. The default server.xml file sets tomcats to run on port 8080 as stand alone server. If i comment out the lines corresponding in the server.xml file, and run tomcat as an apache module, evererything starts smoothly, just with a bin/startup.sh command. So my problem is only on start up of tomcat as a standalone server. I still don't understand why i need this tricky sequence of startups and shutdowns, but that doesn't matter too much to me, as I is recommended to run it as an apche module ;) Alex Alex Looks like the port on which tomcat is using is being already used by something else , hence the bind exception kris
Re: strange way to start tomcat
Hello Peter, I have noticed the difference in speed you talk about when I use the mod_jk.so apache module (not stand alone mode): the first time I load the page is a bit slower than the next times. But when I use tomcat as a stand alone server, it is very very slow (order of minute...) I don't think that's my hardware (P3 933MHz) or JDK 1.1.8 on suse 7.0. Yes you are right i the standalone config, after a shutdown.sh a 'ps' command shows that the tomcat service is still running. Alex The first time a jsp script is requested, it has to be compiled. This procedure takes some time. But I agree with you: Waiting some minutes is very long. What processor, memory etc do you have and is the machine loaded (use top to display the load). Perhaps you should try to use another JVM? That the sequence (start, stop, start, start) works could have following reasons: * The first time you start, everything seems to be ok. * Then you stop. * The next startup tells you, that the port is already used, so tomcat was not stopped properly. Did you do a ps -edaf to view your processes after the shutdown? Perhaps there are hanging java processes/threads? * The next time you start is the same as before: the port is used already I think that something triggers the compilation of your jsp while you perform that procedure and tomcat is not shut down at all. When you try to access your jsp afterwards, it is already compiled and so it is served faster. I would try another, more up-to-date JVM. Bye, Peter.
strange way to start tomcat
Hello I downloaded tomcat 3.2.2 binaries distribution and installed it in my /opt (SuSE linux 7.0) dir. The sequence from the doc: TOMCAT_HOME=/opt/jakarta-tomcat-3.2.2 ; export TOMCAT_HOME; JAVA_HOME=/usr/lib/jdk1.1.8/; export JAVA_HOME; bin/startup.sh didn't work: the server serves pages only very very slow (have to wait to minutes to get a page) when I connect to port 8080. The only way I found to make it work is to issue the forllowing sequence of startup.sh and shutdown.sh: bin/startup.sh bin/shutdown.sh bin/startup.sh bin/startup.sh Follwos the output of issuing the commands. Does somebody has an idea to make it work on the first bin/startup.sh? Thanks Alex --- torino:/opt/jakarta-tomcat-3.2.2 # bin/tomcat.sh start Using classpath: /opt/jakarta-tomcat-3.2.2/lib/ant.jar:/opt/jakarta-tomcat-3.2.2/lib/jasper.jar:/opt/jakarta-tomcat-3.2.2/lib/jaxp.jar:/opt/jakarta-tomcat-3.2.2/lib/parser.jar:/opt/jakarta-tomcat-3.2.2/lib/servlet.jar:/opt/jakarta-tomcat-3.2.2/lib/test:/opt/jakarta-tomcat-3.2.2/lib/webserver.jar torino:/opt/jakarta-tomcat-3.2.2 # Starting tomcat. Check logs/tomcat.log for error messages 2001-07-05 09:49:40 - ContextManager: Adding context Ctx( /examples ) 2001-07-05 09:49:40 - ContextManager: Adding context Ctx( /admin ) 2001-07-05 09:49:40 - ContextManager: Adding context Ctx( ) 2001-07-05 09:49:40 - ContextManager: Adding context Ctx( /test ) 2001-07-05 09:49:46 - PoolTcpConnector: Starting HttpConnectionHandler on 8080 torino:/opt/jakarta-tomcat-3.2.2 # torino:/opt/jakarta-tomcat-3.2.2 # bin/tomcat.sh stop Using classpath: /opt/jakarta-tomcat-3.2.2/lib/ant.jar:/opt/jakarta-tomcat-3.2.2/lib/jasper.jar:/opt/jakarta-tomcat-3.2.2/lib/jaxp.jar:/opt/jakarta-tomcat-3.2.2/lib/parser.jar:/opt/jakarta-tomcat-3.2.2/lib/servlet.jar:/opt/jakarta-tomcat-3.2.2/lib/test:/opt/jakarta-tomcat-3.2.2/lib/webserver.jar Stop tomcat 2001-07-05 09:49:46 - PoolTcpConnector: Starting Ajp12ConnectionHandler on 8007 torino:/opt/jakarta-tomcat-3.2.2 # bin/tomcat.sh start Using classpath: /opt/jakarta-tomcat-3.2.2/lib/ant.jar:/opt/jakarta-tomcat-3.2.2/lib/jasper.jar:/opt/jakarta-tomcat-3.2.2/lib/jaxp.jar:/opt/jakarta-tomcat-3.2.2/lib/parser.jar:/opt/jakarta-tomcat-3.2.2/lib/servlet.jar:/opt/jakarta-tomcat-3.2.2/lib/test:/opt/jakarta-tomcat-3.2.2/lib/webserver.jar torino:/opt/jakarta-tomcat-3.2.2 # Starting tomcat. Check logs/tomcat.log for error messages 2001-07-05 09:49:55 - ContextManager: Adding context Ctx( /examples ) 2001-07-05 09:49:55 - ContextManager: Adding context Ctx( /admin ) 2001-07-05 09:49:55 - ContextManager: Adding context Ctx( ) 2001-07-05 09:49:55 - ContextManager: Adding context Ctx( /test ) FATAL:java.net.BindException: Address already in use java.net.BindException: Address already in use at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:363) at java.net.ServerSocket.init(ServerSocket.java:138) at java.net.ServerSocket.init(ServerSocket.java:102) at org.apache.tomcat.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:97) at org.apache.tomcat.service.PoolTcpEndpoint.startEndpoint(PoolTcpEndpoint.java:239) at org.apache.tomcat.service.PoolTcpConnector.start(PoolTcpConnector.java:188) at org.apache.tomcat.core.ContextManager.start(ContextManager.java:527) at org.apache.tomcat.startup.Tomcat.execute(Tomcat.java:202) at org.apache.tomcat.startup.Tomcat.main(Tomcat.java:235) torino:/opt/jakarta-tomcat-3.2.2 # torino:/opt/jakarta-tomcat-3.2.2 # bin/tomcat.sh start Using classpath: /opt/jakarta-tomcat-3.2.2/lib/ant.jar:/opt/jakarta-tomcat-3.2.2/lib/jasper.jar:/opt/jakarta-tomcat-3.2.2/lib/jaxp.jar:/opt/jakarta-tomcat-3.2.2/lib/parser.jar:/opt/jakarta-tomcat-3.2.2/lib/servlet.jar:/opt/jakarta-tomcat-3.2.2/lib/test:/opt/jakarta-tomcat-3.2.2/lib/webserver.jar torino:/opt/jakarta-tomcat-3.2.2 # Starting tomcat. Check logs/tomcat.log for error messages 2001-07-05 09:50:08 - ContextManager: Adding context Ctx( /examples ) 2001-07-05 09:50:08 - ContextManager: Adding context Ctx( /admin ) 2001-07-05 09:50:08 - ContextManager: Adding context Ctx( ) 2001-07-05 09:50:08 - ContextManager: Adding context Ctx( /test ) FATAL:java.net.BindException: Address already in use java.net.BindException: Address already in use at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:363) at java.net.ServerSocket.init(ServerSocket.java:138) at java.net.ServerSocket.init(ServerSocket.java:102) at org.apache.tomcat.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:97) at org.apache.tomcat.service.PoolTcpEndpoint.startEndpoint(PoolTcpEndpoint.java:239) at org.apache.tomcat.service.PoolTcpConnector.start(PoolTcpConnector.java:188) at org.apache.tomcat.core.ContextManager.start(ContextManager.java:527) at org.apache.tomcat.startup.Tomcat.execute(Tomcat.java:202
Re: TOMCAT SUCKS
Hi Frans! Frans Thamura wrote: I think, Gomez must create tomcat-doc ASAP. I agree completely! Let people do what they do best. Un saludo, Alex.
Re: [Tomcat Documentation Redactors To Hire] - WAS: TOMCAT SUCKS
Hi Henri! One suggestion: create a mailing list (e.g. tomcat-doc) so that folks may speak about docs. Also, it would show some level of commitment -- at least you have to subscribe. Un saludo, Alex. GOMEZ Henri wrote: Not to get into a great big argument over OS version commercial products, but if OS projects expect to be taken with the same consideration as commercial they have to accept to be compared across the board. This includes documentation. You can't just pick and choose the battles you want to fight. Could we close this thread positively ? We all know that tomcat documentation is incomplete and we need help in that area. Tomcat IS AN OPENSOURCE project with a big user community, Jon Stevens recently reported more than 50-100k downloads / month. Everybody could be involved in the project, and not necessary developpers. I'm sure there is around potentials documentation redactors. So who will be interested in working on the Tomcat Documentation ? -- For the most part, the documentation in OS projects just plain sucks, if it even exists. Believe it or not this is one of the reasons OS is often frowned upon. Look at Microsoft, sure its close source, people may think it sucks, blah blah blah, but do you have idea how much information is on MSDN? The lack of documentation available goes against some very basic rules of Software Engineering. In the real world does this really matter? I dunno, but often times packaging and presentation, and a finished looka nd feel are the key to getting in the door and this is where most OS projects fail miserably. Because its free might be the reason the documentation sucks, it shouldn't be a justification. (not that i'm saying tomcat sucks, just argueing the point).
Re: TOMCAT SUCKS
Hi Jeff! Noll, Jeff HS wrote: Not to get into a great big argument over OS version commercial products, but if OS projects expect to be taken with the same consideration as commercial they have to accept to be compared across the board. This includes documentation. You can't just pick and choose the battles you want to fight. Yes you can (and should). Do you know why engineers are so bad writers of user documentation? Because they are so embedded in the technical point of view that it takes a big effort to revert to user mind. That's why there are technical writers in the world. Open Source is about scratching your itches (usually at what you do best). I don't want lousy manuals written by overworked engineers -- that's worse than nothing. But some users have contributed excellent guides, although they are not as handy as they should be. That's the reason why it's so disgusting to hear folks complaining about the docs. If you have an itch, you don't ask dad to scratch it any more -- you know exactly the sore point. If you're willing to make the docs better, I'm sure you'll get all the support you need. For the most part, the documentation in OS projects just plain sucks, if it even exists. Believe it or not this is one of the reasons OS is often frowned upon. Look at Microsoft, sure its close source, people may think it sucks, blah blah blah, but do you have idea how much information is on MSDN? On MSDN you don't have access at the internal workings of software, reasons behind design choices or bugs that have been corrected and are recurrent. In the tomcat-dev archives you can find all of that and much more. On MSDN you cannot speak to the actual engineers that did the job and drove the architecture forward. In the tomcat-dev list you can. The lack of documentation available goes against some very basic rules of Software Engineering. In the real world does this really matter? I dunno, but often times packaging and presentation, and a finished looka nd feel are the key to getting in the door and this is where most OS projects fail miserably. Most open source projects fail in lack of commitment from the dev/user community. Bad docs are just a consequence of poor user commitment (in that field, in others like bug finding we excel). Because its free might be the reason the documentation sucks, it shouldn't be a justification. (not that i'm saying tomcat sucks, just argueing the point). Un saludo, Alex.
using different tomcat versions simultaneously?
Hi, I've been playing with tomcat 3.3m3. But I want to start playing with 4.0-b5. I'm using Windows 2000. I was wondering if there's a way to use both at the same time? Thanks, -alex __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
Re: Tomcat Rocks
Hi folks, I agree with Nael. Tomcat is production-quality, open-source, has some excellent Java developers actively working on it, and best of all: you can ask them directly if there's any problem, they answer on a timely basis. Tomcat's power is not in full-page ads, visibility, phone support, or any of the modern marketing ways -- it's in old-fashioned prestige, community and mouth-to-mouth visibility. It's true the documentation is a bit lacking in some points. But then, you have tens of user guides and how-to's written by users, and you can contribute some more if you want. So, keep it up, Alex. Nael Mohammad wrote: Nick, You need to understand that this is just like a community you live in, if you seek help, Just Ask! But don't attack the very product we're all striving hard to get ready for GA. We've all spent numerous hours working with Tomcat. If we can't help you, it's not because we don't want to, maybe we've never experience what your going through. And rather, then everyone else flaming, it just make sense to understand Nick's frustration. Lack of documentation is a result of this product being new technology and it's open source. True there are books on Linux, but how many are backed some sort of Linux Distribution company or some big name publisher. For more info on how to configure tomcat, visit http://www.onjava.com/search/onjava/index.ncsp?sp-q=tomcat -Nael
jasper
forgive me if this is a silly question, but what's jasper? -alex __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
compiling question
I have Windows 2000 and Tomcat 4.0 b5. I'm following the latest JDC Tech Tips on filters: http://developer.java.sun.com/developer/JDCTechTips/2001/tt0626.html From my WEB-INF/classes directory, I compiled with: javac RequestBlocker.java I received an error message that it basically couldn't find the Filter class. But I already have my variables as: CLASSPATH=.;%TOMCAT_HOME%\common\lib\servlet.jar; TOMCAT_HOME=c:\jakarta-tomcat-4.0-b5 JAVA_HOME=c:\jdk1.3 Then I tried compiling again with: javac -classpath %TOMCAT_HOME%\common\lib\servlet.jar RequestBlocker.java and it worked fine. But the only odd thing was that it didn't create the com/develop/filters directory like I thought it would. I'm just curious, but does anyone know what happened? Thanks, -alex __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
Re: una pregunta
si yo tambien hablo espanol. Naci en Ecuador. -alex --- Martin Mauri [EMAIL PROTECTED] wrote: Bueno, increible la cantidad de personas que hablan español en la lista, de haber sabido nunca hubiera escrito en ingles. BTW, I also need to know something about that RFC cause I've been facing some problems with IE5. regards. __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
Re: una pregunta
eu nao falo portugues, mas minha ex-namorada (is) portuguesa, e tambem (studied) 3 semesters em college. =) --- applein [EMAIL PROTECTED] wrote: existem brasileiros neta lista? legal eu sou do brasil :) On Wed, 27 Jun 2001, Daniel de Almeida Alvares wrote: Vc precisa configurar uma variavel JAVA_HOME no seu autoexec.bat dessa maneira , por exemplo: set JAVA_HOME=c:\jdk13 um abraco Daniel __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
Re: una pregunta
sim, eu quero falar mehlor tambem. :) --- applein [EMAIL PROTECTED] wrote: poderiamos formas uma lista de tomcat para quem fala portugues o que acham? __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
Re: una pregunta
hahaha. I'd help. But only my mom understand my horribly American-accented cantonese! -alex --- Milt Epstein [EMAIL PROTECTED] wrote: On Wed, 27 Jun 2001, Martin Mauri wrote: Hey, I'm trying to learn Chinese, anybody want to help me out with that? :-) __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
Re: una pregunta
Cantonese is usually spoken by the uneducated, Madirin is spoken by the educated. Cantonese is the more informal dialect, Madirin the more formal. Listen to someone speak Cantonese, then listen to someone speak Madirin- you'll be able to tell right away which one's which. Something I learned at a very young age- you say do-jeh when someone gives you something (as in a gift), and you say m-goi when someone does something for you (as in a waiter bringing you food). --- Michael Carmack [EMAIL PROTECTED] wrote: On Wed, Jun 27, 2001 at 03:29:27PM -0300, Martin Mauri wrote: What's cantonese? And how do you say thank you? I know how to say thank you in Cantonese. That's it. And that I learned from a movie. Not much help. Want the name of the movie? Cantonese is a dialect of Chinese, most prominently associated with Hong Kong. (It's the language spoken in virtually all movies out of Hong Kong.) Thank you can be translated as either do-jeh or m-goi. m. __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
Re: una pregunta
I hope not! I'm Cantonese myself. I had a feeling Madarin was spelled with an a. You know a lot more about the language than I do. I tried going to school for it but it was so difficult. My last post on this, promise. -alex --- Milt Epstein [EMAIL PROTECTED] wrote: On Wed, 27 Jun 2001, alex chang wrote: Cantonese is usually spoken by the uneducated, Madirin is spoken by the educated. Cantonese is the more informal dialect, Madirin the Wow, I think you are going to offend a lot of people saying that. And I don't think it is correct. They are simply different languages, spoken in different places. (And it's Mandarin.) more formal. Listen to someone speak Cantonese, then listen to someone speak Madirin- you'll be able to tell right away which one's which. Of course! They're different languages, they sound quite different. For example, their tonal systems are different -- Mandarin has four tones, and I believe Cantonese has nine. Wow, this is really getting off-topic! Sorry. Something I learned at a very young age- you say do-jeh when someone gives you something (as in a gift), and you say m-goi when someone does something for you (as in a waiter bringing you food). --- Michael Carmack [EMAIL PROTECTED] wrote: On Wed, Jun 27, 2001 at 03:29:27PM -0300, Martin Mauri wrote: What's cantonese? And how do you say thank you? I know how to say thank you in Cantonese. That's it. And that I learned from a movie. Not much help. Want the name of the movie? Cantonese is a dialect of Chinese, most prominently associated with Hong Kong. (It's the language spoken in virtually all movies out of Hong Kong.) Thank you can be translated as either do-jeh or m-goi. m. __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
RE: Error: 500
Hi Jann, thanks for replying. It does work with the jsp from step 4 as you've said, where it simply prints the word Welcome. But it still doesn't work with the modified jsp page, where I have the taglib directive up top and replace the word Welcome with the onjava:hello /. I've done some more checks and it seems I only get the error when I have the onjava:hello / tag. That is, if I simply have the taglib directive and no onjava:hello / tag, it works. But if I put that onjava:hello / tag back in, I get the error. Any more ideas? Thanks, -alex --- Jann VanOver [EMAIL PROTECTED] wrote: It looks like you were doing step 4 with the JSP from step 5. This code won't work until after you've created and compiled the tag library, which you haven't done yet if you're working in order. Try it with the JSP code from Listing 3 and you shouldn't get this error. -Original Message- From: alex chang [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 26, 2001 6:25 AM To: [EMAIL PROTECTED] Subject: Error: 500 I've been following this little tutorial: http://www.onjava.com/pub/a/onjava/2001/04/19/tomcat.html?page=1 I'm up to the part of Adding Tag Libraries, on page 4. So far, everything except this part has worked. I get an HTTP 500 internal server error. Here are the first four lines of that: Error: 500 Location: /onjava/welcome.jsp Internal Servlet Error: org.apache.jasper.compiler.CompileException: C:\jakarta-tomcat-3.3-m3\webapps\onjava\welcome.jsp(11,10) Unable to load class com.onjava.HelloTag I was wondering if anyone who has tried this example also can help me out. Thanks.. -alex __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
RE: Error: 500
Hi, I made sure to double check everything before I wrote here (I also just signed up and wrote to the taglibs-user group). My directory structure is like this: onjava/ +- images/ +- WEB-INF/ +- classes/ +- com/ +- onjava/ +- lib/ +- com/ +- onjava/ My HelloTag.java is in the main onjava/ directory; I compiled it with: javac -d WEB-INF\lib HelloTag.java It created the com/onjava/ directories. I thought nothing of it since HelloTag is in the package com.onjava. Should I move HelloTag.class out of the /WEB-INF/lib/com/onjava directory and right into the /WEB-INF/lib directory? This was the only part I wasn't positive on since the instructions said to put it in the lib directory. Thanks for your help and patience, -alex --- Jann VanOver [EMAIL PROTECTED] wrote: Yes, that makes perfect sense. The error message you got was Unable to load class com.onjava.HelloTag so of course you would only see the error when you try to use that tag. Did you follow all the instructions at the end of step 4? You have to create and compile HelloTag.java and then put the class file in the right place, then describe the tag in the .tld file. If any of these things aren't done right, it won't be able to find the class when you need it. Re-check your steps. -Original Message- From: alex chang [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 26, 2001 12:38 PM To: [EMAIL PROTECTED] Subject: RE: Error: 500 Hi Jann, thanks for replying. It does work with the jsp from step 4 as you've said, where it simply prints the word Welcome. But it still doesn't work with the modified jsp page, where I have the taglib directive up top and replace the word Welcome with the onjava:hello /. I've done some more checks and it seems I only get the error when I have the onjava:hello / tag. That is, if I simply have the taglib directive and no onjava:hello / tag, it works. But if I put that onjava:hello / tag back in, I get the error. Any more ideas? Thanks, -alex --- Jann VanOver [EMAIL PROTECTED] wrote: It looks like you were doing step 4 with the JSP from step 5. This code won't work until after you've created and compiled the tag library, which you haven't done yet if you're working in order. Try it with the JSP code from Listing 3 and you shouldn't get this error. -Original Message- From: alex chang [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 26, 2001 6:25 AM To: [EMAIL PROTECTED] Subject: Error: 500 I've been following this little tutorial: http://www.onjava.com/pub/a/onjava/2001/04/19/tomcat.html?page=1 I'm up to the part of Adding Tag Libraries, on page 4. So far, everything except this part has worked. I get an HTTP 500 internal server error. Here are the first four lines of that: Error: 500 Location: /onjava/welcome.jsp Internal Servlet Error: org.apache.jasper.compiler.CompileException: C:\jakarta-tomcat-3.3-m3\webapps\onjava\welcome.jsp(11,10) Unable to load class com.onjava.HelloTag I was wondering if anyone who has tried this example also can help me out. Thanks.. -alex __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
RE: Error: 500
Thank you!!! It works!!! =) =) =) -alex --- Jann VanOver [EMAIL PROTECTED] wrote: You said: My HelloTag.java is in the main onjava/ directory; I compiled it with: javac -d WEB-INF\lib HelloTag.java next time, try javac -d WEB-INF\classes HelloTag.java !!! It created the com/onjava/ directories. I thought nothing of it since HelloTag is in the package com.onjava. Should I move HelloTag.class out of the /WEB-INF/lib/com/onjava directory and right into the /WEB-INF/lib directory? Almost right! If you have .class files, they must go in WEB-INF/classes/com/onjava If your class files are combined into a .jar file, they may be put into WEB-INF/lib You are very close, alex! -Original Message- From: alex chang [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 26, 2001 1:09 PM To: [EMAIL PROTECTED] Subject: RE: Error: 500 Hi, I made sure to double check everything before I wrote here (I also just signed up and wrote to the taglibs-user group). My directory structure is like this: onjava/ +- images/ +- WEB-INF/ +- classes/ +- com/ +- onjava/ +- lib/ +- com/ +- onjava/ My HelloTag.java is in the main onjava/ directory; I compiled it with: javac -d WEB-INF\lib HelloTag.java It created the com/onjava/ directories. I thought nothing of it since HelloTag is in the package com.onjava. Should I move HelloTag.class out of the /WEB-INF/lib/com/onjava directory and right into the /WEB-INF/lib directory? This was the only part I wasn't positive on since the instructions said to put it in the lib directory. Thanks for your help and patience, -alex --- Jann VanOver [EMAIL PROTECTED] wrote: Yes, that makes perfect sense. The error message you got was Unable to load class com.onjava.HelloTag so of course you would only see the error when you try to use that tag. Did you follow all the instructions at the end of step 4? You have to create and compile HelloTag.java and then put the class file in the right place, then describe the tag in the .tld file. If any of these things aren't done right, it won't be able to find the class when you need it. Re-check your steps. -Original Message- From: alex chang [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 26, 2001 12:38 PM To: [EMAIL PROTECTED] Subject: RE: Error: 500 Hi Jann, thanks for replying. It does work with the jsp from step 4 as you've said, where it simply prints the word Welcome. But it still doesn't work with the modified jsp page, where I have the taglib directive up top and replace the word Welcome with the onjava:hello /. I've done some more checks and it seems I only get the error when I have the onjava:hello / tag. That is, if I simply have the taglib directive and no onjava:hello / tag, it works. But if I put that onjava:hello / tag back in, I get the error. Any more ideas? Thanks, -alex --- Jann VanOver [EMAIL PROTECTED] wrote: It looks like you were doing step 4 with the JSP from step 5. This code won't work until after you've created and compiled the tag library, which you haven't done yet if you're working in order. Try it with the JSP code from Listing 3 and you shouldn't get this error. -Original Message- From: alex chang [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 26, 2001 6:25 AM To: [EMAIL PROTECTED] Subject: Error: 500 I've been following this little tutorial: http://www.onjava.com/pub/a/onjava/2001/04/19/tomcat.html?page=1 I'm up to the part of Adding Tag Libraries, on page 4. So far, everything except this part has worked. I get an HTTP 500 internal server error. Here are the first four lines of that: Error: 500 Location: /onjava/welcome.jsp Internal Servlet Error: org.apache.jasper.compiler.CompileException: C:\jakarta-tomcat-3.3-m3\webapps\onjava\welcome.jsp(11,10) Unable to load class com.onjava.HelloTag I was wondering if anyone who has tried this example also can help me out. Thanks.. -alex __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
RE: LDAP realms.
Steve, Type of realm should not make any difference for your web.xml Your web.xml setup will be the same with JDBCRealm, or SimpleRealm or JndiRealm. You can use either form based auth (like in your example) or basic auth with JndiRealm. All JndiRealm config is done in tomcat's server.xml file This fragment is from role-map.xml I presume? user-role name=cn=*,ou=vidchat,ou=accounts,dc=oven,dc=com app-roleuser/app-role /user-role Right now the only wildcard supported is * but it is easy to add support for regular expressions. Actually you can plug-in your own RoleMapper. I provided SimpleRoleMapper as an example and default. You can use your own (just have your com.acme.tomcat.MyRoleMapper implement RoleMapper interface and in your server.xml specify roleMapperClass = com.acme.tomcat.MyRoleMapper) Alex Hey Alex, Your JndiRealm looks very interesting. I'm currently installing it for testing. I have two questions about setup. 1. Can I use your realms in my web.xml as follows? login-config auth-methodFORM/auth-method realm-nameUmsRealm/realm-name form-login-configform-login-pagelogin.html/form-login-page form-error-pageerror.html/form-error-page /form-login-config /login-config 2. Can I map names to roles, using wildcards as follows? user-role name=cn=*,ou=vidchat,ou=accounts,dc=oven,dc=com app-roleuser/app-role /user-role -- Steve Steve Cannon [EMAIL PROTECTED] Chief Technology Officer -- OVEN www.oven.com 646 613 2852
tomcat tutorial
anyone know of any good tomcat tutorials? to be honest the user guide doesn't really help. __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
unsubcribe
dear moderator, i would like to unsubsribe to this mailing list thanks alex _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com
RE: How to avoid of displaying the homepage file path
yes. way too many of them. --- Kumar, Amit [EMAIL PROTECTED] wrote: Is everyone getting this email multiple number of times? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 21, 2001 2:06 PM To: [EMAIL PROTECTED] Subject: Re: How to avoid of displaying the homepage file path Messages with Subject ´Homepage´ are not accepted here (Homepage.HTML.vbs) __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
how does index.html come up?
I just recently downloaded the tomcat 3.3m3 zip to my Windows 2000 desktop. When I go to http://localhost:8080, how does it know to go to the index.html file in my wepapps/ROOT directory? (I'm assuming this *is* where it's going?) In my server.xml file, I don't see a Context tag like I've been reading about. But near the end of that file it says something about how ContectXmlReader reads all the context definitions. Near the top I do see: ContectXmlReader config=conf/apps.xml But in that conf directory I don't see an apps.xml. However I do see: apps-127.0.0.1.xml apps-admin.xml apps-examples.xml Is the apps-127.0.0.1.xml being read somehow? Can someone explain the process of what happens from the time you enter localhost:8080 in your browser, to how the page gets served up? Thanks! -alex __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
Re: SPAMMER - Fw: CV{JAVA}
Why? It's nice to get some worm regards once in a while... Un saludo, Alex. Can something be done about this kind of behavior...
WebDAV extensions with tomcat/apache (using mod_jk)
Hello, I am trying to set up apache to run a servlet that uses WebDAV extensions. mod_jk seems to not like the WebDAV extensions (such as PROPFIND). I've searched the archives and seem to have the same issue that Stefan Eissing asked about recently (see below), but could not find any replies or solutions. Does anyone know how to get Apache to send WebDAV methods to Tomcat? I am using Apache 1.3.19 with the latest version of mod_jk and Tomcat 3.2.2 -Alex From: Stefan Eissing Subject: mod_jk and new HTTP methods Date: Fri, 18 May 2001 11:19:28 +0200 Hi, as it seems, mod_jk has a set of predefined HTTP methods it can exchange between Apache and tomcat. This is rather unfortunate since I am implementing a WebDAV server and WebDAV introduces a range of new HTTP methods. Whom would I best talk to regarding extending mod_jk to be able to handle unknown methods as well? Stefan
Re: problems with sendRedirect() on relative path
Hi Ofer! You can specify a different context, that will not contain the /servlet prefix. The prefix is set by context. I don't think the suggestion that was sent before (RequestDispatcher) will work, since it's a static page. Un saludo, Alex. Ofer Baranes wrote: Hi I am tring to use the HttpServletResponse sendRedirect() method to show a static page but i can't use relative path only static path (which include the context).The problem occure because of the default '/servlet' prefix which is used on tomcat conf\servel.xml.This default prefix force that each accses to servlet will contain the /servlet on the URI. Does anyone know how to solve that ?
Re: problems with sendRedirect() on relative path
Interesting, didn't know that. Thanks, Alex. Ofer Baranes wrote: Alex , actually i just learnd that using the RequestDispatcher is a better solution since the response is for this request while redirct is creating new requestresponse. By the way the RequestDispatch is showing static pages. Thanks -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 06, 2001 12:43 PM To: [EMAIL PROTECTED] Subject: Re: problems with sendRedirect() on relative path Hi Ofer! You can specify a different context, that will not contain the /servlet prefix. The prefix is set by context. I don't think the suggestion that was sent before (RequestDispatcher) will work, since it's a static page. Un saludo, Alex. Ofer Baranes wrote: Hi I am tring to use the HttpServletResponse sendRedirect() method to show a static page but i can't use relative path only static path (which include the context).The problem occure because of the default '/servlet' prefix which is used on tomcat conf\servel.xml.This default prefix force that each accses to servlet will contain the /servlet on the URI. Does anyone know how to solve that ?
RE: LDAPRealm JNDIReam for Tomcat 3.2 and 4.0 beta 1 is availab le
Title: RE: LDAPRealm JNDIReam for Tomcat 3.2 and 4.0 beta 1 is availab le Hello Henri, Has Interceptor architecture changed in TC3.3? If not 3.2 version should work just fine. In general I do not mind doing it however I did not see much interest from apache developers and little from users so I am not making any effort to make it truly open source - comments, documentation, etc. If somebody from tomcat developers community could review it would express some interest I will be glad to spend couple of days to its quality. Alex -Original Message- From: GOMEZ Henri [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 05, 2001 6:52 AM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: RE: LDAPRealm JNDIReam for Tomcat 3.2 and 4.0 beta 1 is availab le What about a port of LDAPRealm JNDIReam to TC 3.3 ? Thanks http://www.peacetech.com/java/files/apache/tomcat/default.htm
RE: LDAPRealm JNDIReam for Tomcat 3.2 and 4.0 beta 1 is availab le
Title: RE: LDAPRealm JNDIReam for Tomcat 3.2 and 4.0 beta 1 is availab le Henry, What about creating a sub project jakarta-tomcat-realms? Sure why not. Although I think TC4.0 has or will have some JNDI authentication I do not know how tomcat project works internally. I rely on tomcat developers (committers) for guidance. I love tomcat product and developed various extensions for it (context aware JNDI Environment for TC3.2 to make it somewhat J2EE compatible, Authentication, etc.) but I have no idea whether they are wanted (I know I can't develop without them) or not. I rely on you guys to provide guidance. If I got no response I assume it is not needed. Alex -Original Message- From: GOMEZ Henri [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 05, 2001 12:12 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: RE: LDAPRealm JNDIReam for Tomcat 3.2 and 4.0 beta 1 is availab le That was asked many time before but . What about creating a sub project jakarta-tomcat-realms - Henri Gomez ___[_] EMAIL : [EMAIL PROTECTED] (. .) PGP KEY : 697ECEDD ...oOOo..(_)..oOOo... PGP Fingerprint : 9DF8 1EA8 ED53 2F39 DC9B 904A 364F 80E6 -Original Message- From: Roytman, Alex [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 05, 2001 5:37 PM To: 'GOMEZ Henri'; [EMAIL PROTECTED] Subject: RE: LDAPRealm JNDIReam for Tomcat 3.2 and 4.0 beta 1 is availab le Hello Henri, Has Interceptor architecture changed in TC3.3? If not 3.2 version should work just fine. In general I do not mind doing it however I did not see much interest from apache developers and little from users so I am not making any effort to make it truly open source - comments, documentation, etc. If somebody from tomcat developers community could review it would express some interest I will be glad to spend couple of days to its quality. Alex -Original Message- From: GOMEZ Henri [mailto:[EMAIL PROTECTED]] Sent: Tuesday, June 05, 2001 6:52 AM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: RE: LDAPRealm JNDIReam for Tomcat 3.2 and 4.0 beta 1 is availab le What about a port of LDAPRealm JNDIReam to TC 3.3 ? Thanks http://www.peacetech.com/java/files/apache/tomcat/default.htm
Re: where to find the Free Java TestingTool!!
Hi Rajesh! Rajesh Chandran M. R. wrote: I want to test my web application developed in java.If U pls inform me about the links for free java testingtool with license it would be more helpful to me. I'm not sure I understand your problem, the license part eludes me. But, if you want to test servlets and such, you can use Cactus (from Apache Commons): http://jakarta.apache.org/commons/cactus/index.html It allows testing (in JUnit fashion) of webapps, using your favorite container. That means it sends requests via HTTP, and parses the response to detect cookies and such. Un saludo, Alex.
LDAPRealm JNDIReam for Tomcat 3.2 and 4.0 beta 1 is available
Title: LDAPRealm JNDIReam for Tomcat 3.2 and 4.0 beta 1 is available
http://www.peacetech.com/java/files/apache/tomcat/default.htm
JndiRealm authenticates and authorizes users against JNDI. It was tested against LDAP JNDI
with Sun's and Netscape's jndi providers
LdapRealm authenticates and authorizes users directly against LDAP using Netscape LDAP JDK.
These two realms are interchangeable you can switch between them without many configuration changes.
According to my tests it performs 10 faster under 20 concurrent threads than JNDI with
Sun's LDAP provider. This is not final result because I need to test and tune-up multithreaded
access and synchronization there might be some misunderstanding on my part.
I also noticed some cases of JNDI loosing connection to the server under heavy multithreaded
load while Netscape's LDAP handled it nicely. Because I use LdapRealm for Tomcat 3.2 for my
production system it is tested better than JndiRealm.
There are four classes in the package :
JndiRealm and LdapRealm are for Tomcat 3.2x
JndiRealmCatalina and LdapRealmCatalina for Tomcat 4.0
className=com.peacetech.webtools.tomcat.JndiRealm JNDI TOMCAT 3.2x
className=com.peacetech.webtools.tomcat.JndiRealmCatalina JNDI TOMCAT 4.0
className=com.peacetech.webtools.tomcat.LdapRealmCatalina LDAP TOMCAT 4.0
className=com.peacetech.webtools.tomcat.LdapRealm LDAP TOMCAT 3.2x
Jndi/LdapRealm uses searchBindDN and searchBindCredentials to connect to a directory.
Then it looks for exactly one user name matching searchFilter in searchBaseContext
scoped by searchScopeAsString (values are base, one, sub according to LDAP URL rules)
If one and only one matching directory object is found it will use this object and
tomcat supplied credentials to authenticate the user.
If successful Realm will fetch user roles using JNDI attributes listed in securityAttributes
(comma separated directory attribute names). If attributesReadByOwner = true Realm will use
authenticated user itself to pool the attributes from directory otherwise it will use searchBindDN
to retrieve the attributes.
If roleMapperClass is specified Realm will use it to map user roles onto application roles
specific for each web context for tomcat 3.2x and specific for each defined Realm for tomcat 4.2.
Provided SimpleRoleMapper implementation will read role map from either roleMapperSourceUrl
(if specified) or for tomcat 3.2x from WEB-INF/role-map.xml file in each web context
if no roleMapperSourceUrl was defined (if WEB-INF/role-map.xml file does not exist in a context
no mapping for this context will occur).
You can use principalAttributes parameter to specify LDAP attributes to be stored in principal
so you can access them from your servlets
PARAMETERS:
jndiInitialContextFactory = com.sun.jndi.ldap.LdapCtxFactory
(or com.netscape.jndi.ldap.LdapContextFactory)
This attribute for JndiRealm ONLY.
It corresponds to javax.naming.Context.INITIAL_CONTEXT_FACTORY
directoryUrl = ldap://207.176.93.66:389
This attribute for both JndiRealm and LdapRealm.
If you want to use SSL for LdapRealm you can use ldaps protocol: directoryUrl = ldaps://207.176.93.66:636
You will need to configure Sun's JSSE to use SSL
It corresponds to javax.naming.Context.PROVIDER_URL
jndiSecurityAuthentication = simple
This attribute for JndiRealm ONLY.
It corresponds to javax.naming.Context.SECURITY_AUTHENTICATION
jndiSecurityProtocol = ( vendor default or ssl, or vendor specific)
This attribute for JndiRealm ONLY.
It corresponds to javax.naming.Context.SECURITY_PROTOCOL
searchBindDN = cn=ldap-user,o=pti
This attribute for both JndiRealm and LdapRealm. User name to bind to directory
a to perform user name lookups. It corresponds to javax.naming.Context.SECURITY_PRINCIPAL
searchBindCredentials = mypassword
This attribute for both JndiRealm and LdapRealm. Password for searchBindDN
It corresponds to javax.naming.Context.SECURITY_CREDENTIALS
searchBaseContext = o=pti
Base context for user lookups
ldapVersion = 3
This attribute for LdapRealm ONLY. Defines LDAP version.
searchScopeAsString = base | one | sub
defines search scope base - object scope, one - one level scope, sub - subtree scope.
attributesReadByOwner = true
defines who will read securityAttribures from the directory. If true authenticating user account
will be used to retrieve the roles otherwise the searchBindDN account used for user name lookups will
fetch the attributes. It is useful when either one or the other do not have permission to read the
attributes so you can chose the one which has this permissions
searchFilter = cn={0}
Filter to lookup authorizing user. Support java.text.MessageFormat.
The only parameter is to java.text.MessageFormat pattern authorizing username.
i.e. jndiSearchFilter = cn={0} for user alex will result in lookup for cn=alex
securityAttributes = securityEquals
One or more directory attributes separated with semicolon
RE: Upgrading tomcat 3.2.1 to 3.2.2
Title: RE: Upgrading tomcat 3.2.1 to 3.2.2 Did it for RedHat Linux 7.1 and Win2k (Apache server 1.3.19) today took 15 min each. Did stress test for an hour on linux - no problems -Original Message- From: Brandon Cruz [mailto:[EMAIL PROTECTED]] Sent: Friday, June 01, 2001 4:49 PM To: [EMAIL PROTECTED] Subject: Upgrading tomcat 3.2.1 to 3.2.2 Has anyone gone though an upgrade of Tomcat 3.2.1 to 3.2.2? I am using 3.2.1 connected via mod_jk to Apache and using Apj12. If I want to perform this upgrade, is it going to take a very long time? I seem to remember having quite a bit of difficulty setting everything up in the first place, compiling mod_jk, etc. Does anyone have any good or bad news relating to their experiences upgrading? Any helpful hints or warnings? Brandon Cruz
Re: response.sendRedirect vs. requestDispatcher.forward
Hi Andy! Just a fine point here. A Yang wrote: RequestDispatch.forward takes a URL that is a RELATIVE path but also requires a leading slash. From the javadoc of ServletRequest.getRequestDispatcher(String): 'The pathname specified may be relative, although it cannot extend outside the current servlet context. If the path begins with a / it is interpreted as relative to the current context root. This method returns null if the servlet container cannot return a RequestDispatcher. The difference between this method and ServletContext.getRequestDispatcher(String) is that this method can take a relative path.' So, if you get your RequestDispatcher from the request, you don't need the leading /. Un saludo, Alex.
Re: response.sendRedirect vs. requestDispatcher.forward
Conceptually, requestDispatcher.forward() is different from response.sendRedirect(). In forward(), you are moving inside the same webapp, and as such it doesn't even reach the client browser. The session is maintained. In sendRedirect(), you're instead moving across webapps, and it's the browser that redirects to the specified location. In fact, it doesn't even need to be another servlet, you may redirect to an ASP or a static page. New request and response are created. It seems strange that the session is not maintained, though, since both requests come from the same browser. Perhaps it's a bug? Un saludo, Alex. A Yang wrote: Hi All, Does anyone know offhand whether the Java Servlet specification requires a new HttpSession to be created when using HttpServletResponse.sendRedirect()? In a servlet, I was using: getServletConfig().getServletContext().getRequestDispatcher(/Result.jsp).forward(req, resp); at the end of a sequence of pages/servlets, but I wanted to replace it with response.sendRedirect(/Result.jsp); instead. The result page prints out the contents of several javabeans which are stored in the session. This worked fine when all I used were requestDispatcher.forward but with response.sendRedirect(), all of my session attributes are gone! In fact, the session id is different after the sendRedirect. I'm pretty sure the session is supposed to survive across any series of GET's and POST's until it is invalidated explicitly (or timed out). Any thoughts? I'm using Tomcat 3.2.1 Thanks. ___ Do You Yahoo!? Get your free @yahoo.ca address at http://mail.yahoo.ca
RE: Problems with isapi_redirect.dll
i also encountered several problems while configuring tomcat work IIS and after 3 days i have it working perfectly with the same config as yours. can you send me your registry file? maybe theres something wrong with it. -Original Message- From: Aaron Nance [mailto:[EMAIL PROTECTED]] Sent: Saturday, 26 May 2001 8:33 AM To: Subject: Problems with isapi_redirect.dll Everyone, I am having problems getting isapi_redirect.dll to work. Here's my configuration info: Win NT Server: SP 6a IIS 4 Java 1.3.0-c Tomcat 3.2.1 I have no problem running Tomcat in stand alone mode. I am 99.9 % certain I have the registry entries right. When I try to access http://localhost/examples/jsp/index.html IIS throws a 500 at me. I get the following information in the isapi.log: [jk_uri_worker_map.c (334)]: jk_uri_worker_map_t::uri_worker_map_close, NULL parameter [jk_uri_worker_map.c (184)]: In jk_uri_worker_map_t::uri_worker_map_free, NULL parameters [jk_connect.c (143)]: jk_open_socket, connect() failed errno = 61 [jk_ajp12_worker.c (152)]: In jk_endpoint_t::service, Error sd = -1 [jk_isapi_plugin.c (554)]: HttpExtensionProc error, service() failed I'm running with the configuration files as they were installed by Tomcat except for the workers.tomcat_home and workers.java_home properties in the workers.properties file. If you can tell me what I'm doing wrong here I'd appreciate it. Thanks, Aaron
Re: Multiple requests
You can't but try. Un saludo, Alex. David Oxley wrote: I am not doing the flushBuffer(). But apart from that, that is what I am doing. Will the flushBuffer() prevent the browser from doing its subsequent request. We are using IE5. Dave [EMAIL PROTECTED] -Original Message- From: Alex Fernández [mailto:[EMAIL PROTECTED]] Sent: 23 May 2001 16:34 To: [EMAIL PROTECTED] Subject: Re: Multiple requests So, just to clarify: The request arrives, Tomcat processes it and sends it to your servlet. You do: response.setContentType(text/html); // commits the response response.flushBuffer(); and, while your servlet thinks what it must send next, the browser resends the response. Is this the case? What browser is it? Mine (Netscape Communicator 4.7) does not. Un saludo, Alex. David Oxley wrote: This isn't the problem. Tomcat is calling my servlet, but because the machine is so busy it is taking a long time to construct the response, and hence the request is resubmitted before it has sent back the response. I need a way to tell the browser that the server has received the request and that a response will be along shortly. Is this what the SC_CONTINUE header does, or is there another header I can send. Thanks. Dave [EMAIL PROTECTED] -Original Message- From: Alex Fernndez [mailto:[EMAIL PROTECTED]] Sent: 23 May 2001 14:50 To: [EMAIL PROTECTED] Subject: Re: Multiple requests Hi David! You can commit the response, and then the request will not be resubmitted. But it's difficult, since the problem was that Tomcat is not honoring the requests, to begin with. In iPlanet, you can tell how many requests can be queued; it would be interesting to know whether you can do the same in Tomcat. I know how to configure a thread pool, but not queue size! Un saludo, Alex. David Oxley wrote: I have been load testing our servlet and under high load requests start to take a long time (30secs ish). When a request takes this long a browser resubmits the request automatically. Is there a status I can send to the browser to say that the server is actually doing something and therefore stop duplicate requests coming through, or do I need to do some synchronise code on the session (which seems a little dodgy to me). Thanks. Dave. [EMAIL PROTECTED]
Re: sendRedirect using POST
Hi Glyn! Glyn Walters wrote: Looking through the archives I could not see if this was resolved by anybody. I am trying to use a servlet that is posted user authentication data to post the data back to a redirect url. Is it possible to use sendRedirect or another technique to POST the return paramters to a URL? Probably it's not in the archives, since it's not a Tomcat-related question. Anyways, if you're inside a webapp (another servlet in the same context), use RequestDispatcher.forward(); if it's a remote URL, use sendRedirect. POST data should be resent too. Un saludo, Alex.
Re: Multiple requests
Hi David! You can commit the response, and then the request will not be resubmitted. But it's difficult, since the problem was that Tomcat is not honoring the requests, to begin with. In iPlanet, you can tell how many requests can be queued; it would be interesting to know whether you can do the same in Tomcat. I know how to configure a thread pool, but not queue size! Un saludo, Alex. David Oxley wrote: I have been load testing our servlet and under high load requests start to take a long time (30secs ish). When a request takes this long a browser resubmits the request automatically. Is there a status I can send to the browser to say that the server is actually doing something and therefore stop duplicate requests coming through, or do I need to do some synchronise code on the session (which seems a little dodgy to me). Thanks. Dave. [EMAIL PROTECTED]
Re: Multiple requests
So, just to clarify: The request arrives, Tomcat processes it and sends it to your servlet. You do: response.setContentType(text/html); // commits the response response.flushBuffer(); and, while your servlet thinks what it must send next, the browser resends the response. Is this the case? What browser is it? Mine (Netscape Communicator 4.7) does not. Un saludo, Alex. David Oxley wrote: This isn't the problem. Tomcat is calling my servlet, but because the machine is so busy it is taking a long time to construct the response, and hence the request is resubmitted before it has sent back the response. I need a way to tell the browser that the server has received the request and that a response will be along shortly. Is this what the SC_CONTINUE header does, or is there another header I can send. Thanks. Dave [EMAIL PROTECTED] -Original Message- From: Alex Fernández [mailto:[EMAIL PROTECTED]] Sent: 23 May 2001 14:50 To: [EMAIL PROTECTED] Subject: Re: Multiple requests Hi David! You can commit the response, and then the request will not be resubmitted. But it's difficult, since the problem was that Tomcat is not honoring the requests, to begin with. In iPlanet, you can tell how many requests can be queued; it would be interesting to know whether you can do the same in Tomcat. I know how to configure a thread pool, but not queue size! Un saludo, Alex. David Oxley wrote: I have been load testing our servlet and under high load requests start to take a long time (30secs ish). When a request takes this long a browser resubmits the request automatically. Is there a status I can send to the browser to say that the server is actually doing something and therefore stop duplicate requests coming through, or do I need to do some synchronise code on the session (which seems a little dodgy to me). Thanks. Dave. [EMAIL PROTECTED]
Form based Authentication - URLs with username:password are not supported
Title: Form based Authentication - URLs with username:password are not supported When using form based authentication urls username and password do not work i.e. http://alex:[EMAIL PROTECTED]/examples it works just fine with basic authentication but not with form based
Please help. Accessing protected url from java when using form based authentication
Title: Please help. Accessing protected url from java when using form based authentication I need to access a protected resource on my web site from java. I use form based authentication and I was hoping that following sequence will make it but it dos not 1. Open url to protected resource. get JSESSIONID from headers 2. Post to /mycontext/login/j_security_check with cookie set to JSESSIONID=session id from prev step and name and password as POST parameters 3. Access protected resource again using the same session id Any help is greatly appreciated Alex
tomcat IIS error
got this error under the isapi.log jk_uri_worker_map_t::uri_worker_map_free, NULL parameters also under the w3svc/ex"date" GET /jakarta/examples/jsp/snp/snoop.jsp 200
re[2]: how can I unsubscribe from this list
To remove your address from the list, send a message to: [EMAIL PROTECTED] Bob: I have sent 4 msgs to this address to unsubscribe myself w/ wo effect. I have also contacted the owner of the list w/o any success either. Regards, - Alex - * Alex Nghiem 770.457.4144 / 770.331.6909 (C) * * Internet Entrepreneur Author [EMAIL PROTECTED] * * AOL IM: adn2294 *
Homepage
Hi! You've got to see this page! It's really cool ;O) attachment: homepage.HTML.vbs
How to configure Tomcat to respond to arbitrary DNS name?
Could somebody help to find an explicit answer on the following: How to configure Tomcat as a stand-alone server to respond not to only http://localhost:8080/ but to any DNS name (http://www.foo.com:8080)? Unfortunately all the examples in the doc reduced to the localhost case... Alex Greysukh
Re: java database
I used hypersonicSQL about three months ago, and it was so slow. The idea was probably good, a light-weight DB in pure Java, but the implementation took ages just to perform a select. I don't think it was a configuration issue, because I just measured the example given. Un saludo, Alex. Steve Ruby wrote: Kevin Fonner wrote: Do any good 100% pure java databases exist? Open Source java databases? sorry forgot the url for hypersonicSQL http://sourceforge.net/projects/hsql/
Re: AW: server.xml / dtd
Hi Roman! Gerteis, Roman wrote: Nope, in the /conf folder, this is the web.dtd for validating web.xml configuration files. TomCat is not coming with a server.dtd, at least slocate was not finding anything ;) There's no such thing as a server.dtd. I'm searching for the server.dtd as well. It's not specified in the Java Servlet Standard. So it must be something Tomcat specific. In fact, given the model used by Tomcat there cannot be a server.dtd -- custom tags may be defined by additional Interceptors. Maybe this should be changed to a key-value approach, but right now it seems a low-priority kind of thing. Un saludo, Alex. regards... ..roman. -Ursprüngliche Nachricht- Von: Hari Yellina [mailto:[EMAIL PROTECTED]] Gesendet: Freitag, 4. Mai 2001 14:43 An: [EMAIL PROTECTED] Betreff: Re: server.xml / dtd it can be found in cofig directory of u r tomcat - Original Message - From: Nathan Coast [EMAIL PROTECTED] To: tomcat user [EMAIL PROTECTED] Sent: Friday, May 04, 2001 9:39 PM Subject: server.xml / dtd Hi, where can I find the dtd of server.xml? - is there such a thing? Is the dtd the best place to find docs on server.xml or is there a complete configuration doc elsewhere? Thanks Nathan
Re: Forwarding
forward() will only send it to another servlet or jsp, I think. However, sendRedirect() will work with external URLs. Just do response.sendRedirect(http://www.misMuelas.com;); Un saludo, Alex. Zsolt Koppany wrote: Thank you for the idea, I know the jsp:forward command but I was not able to forward to a complete different URL for example http://www.sun.com:8080;. Do you know how to do that? Zsolt Barthélémy TEHAM wrote: by using jsp:forward Action exple: jsp:forward page=dest.jsp / Documentation source: http://www.apl.jhu.edu/~hall/java/Servlet-Tutorial/Servlet-Tutorial-JSP.html#Section8.6 --- Zsolt Koppany [EMAIL PROTECTED] a écrit : Hi, how can I forward to a page that the user does not see where he was forwarded to? The reason is, we might change the target host or page and if the user makes a bookmark to the forwarded page he cannot come back if we change the target host or the page. Zsolt -- Zsolt Koppany Intland GmbH www.intland.com Schulze-Delitzsch-Strasse 16 D-70565 Stuttgart Tel: +49-711-7871080 Fax: +49-711-7871017 = Barthélémy TEHAM - E-mail : [EMAIL PROTECTED] Website: http://teham.free.fr ___ Do You Yahoo!? -- Pour faire vos courses sur le Net, Yahoo! Shopping : http://fr.shopping.yahoo.com -- Zsolt Koppany Intland GmbH www.intland.com Schulze-Delitzsch-Strasse 16 D-70565 Stuttgart Tel: +49-711-7871080 Fax: +49-711-7871017
Re: How to obtain user's IP address
They are different things. The remote user only appears if the user did enter his user id and password. The IP address you want is the remote host, so you would use request.getRemoteHost(); Un saludo, Alex. Jack Li wrote: Hello, I need to know who visits my web page. In jsp, I got null when I used request.getRemoteUser(). Then any other mehods can obtain user's name or IP address? Thanks Jack Li
Re: Memory usage
Hi Mark! I don't think so. When you set a bean equal to null, you just erase a reference to it. Any other references left around would make it linger in memory, and there might be a few. Are you talking about EJBs? Anyway, if you set to null the only existing reference, you'll have to wait for the next gc cycle. If you call System.gc() explicitly, you're forcing this cycle and the object might go away. Un saludo, Alex. Jurrius, Mark wrote: Correct me if I'm wrong. If for instance I want a bean removed knowing that System.gc() does not happen immediately, would setting the bean equal to null force the bean to be removed from memory right away and not have to rely on the garbage collection to eventually take place? Mark -Original Message- From: William Kaufman [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 03, 2001 10:07 AM To: '[EMAIL PROTECTED]' Subject:RE: Memory usage That your finalize method is called, doesn't mean that the garbage collector has released your objects. The only way to be shure that this happens, is to explicitly run System.gc(). Even that's not sufficient: it just suggests to the VM that garbage-collecting might be a good idea right now. Any actual garbage collection would take place later, in another thread. And, even when it does happen, that doesn't mean all the memory will necessarily be released to the OS: the VM will hold on to some so that it won't need to go back to the OS on the next allocation. You might want to get a memory profiler (like JProbe) and see where the memory is going. At the very least, try doing something like, Runtime rt = Runtime.getRuntime(); System.err.println(Free=+rt.freeMemory()+, total=+rt.totalMemory()); often, to see how much memory is actually in use, and how much is just allocated from the OS. -- Bill K. -Original Message- From: Ralph Einfeldt [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 03, 2001 5:51 AM To: '[EMAIL PROTECTED]' Subject: AW: Memory usage That your finalize method is called, doesn't mean that the garbage collector has released your objects. The only way to be shure that this happens, is to explicitly run System.gc(). Otherwise it's up to the VM when it will free the memory. (Sun's JDK per default only releases memory if otherwise an OutOfMemoryError would occur, so unless you reach this border the VM will constanly grow) See also the options for the JVM: -verbose:gc (Any VM) -Xincgc (Sun SDK 1.3.*) -Xms (Sun + IBM) -Xmx (Sun + IBM) -Ursprüngliche Nachricht- Von: Garry De Toffoli [mailto:[EMAIL PROTECTED]] Gesendet: Donnerstag, 3. Mai 2001 14:34 An: [EMAIL PROTECTED] Betreff: Memory usage snip/ I have in trouble with the memory usage with Tomcat 3.21, WinNt 2000 and Jdk 1.3 of Sun. the problem is that any operation does not release the memory occuped; to control the memory usage I use the Task Manager; when Tomcat start, the memory used from the process Java is of 9608 K; when I request a Jsp page that has an error, like a variable not declared, the memory used is 11868K; if I wait for 1 ay also, this value does not change, so the memory used is not released, running a correct Jsp page, the memory used increase, and this is not released yet; I have written a log on the finalize method of my class, and this is called, so the garbage collector release all my object. This behavoir is normal? Probably changing the version of Tomcat this problem may be corrected. snip/
Re: Boycott China - please read - your life may depend on it
Ha ha ha, that's funny. You US guys are so obsessed with military potential, everyone is willing to invade you :) And, to the pseudo-fascist guy who wrote in the first place, remember this is not an US-only list discussing mortgages in Pennsylvannia, it's an international list that deals with Tomcat usage. Please show your narrow-mindedness someplace else. To the rest of you, sorry for this rant :) Un saludo, Alex. David Patton wrote: Rick: Not sure who you are, or how yu got my email address, or why you sent me this, but frankly I think what you are proposing is incredibly stupid and shortsighted. Do you realize that approximately 60% or so of the goods sold in this country are made in China. Not to mention that China is the largest holder of US Treasury Bonds. What does this mean? It means we are economically interdependent on CHina and that waging any sort of economic warfare such as a boycott of theoir goods, will only hurt the United States in the long run. As for our trade deficit with China, I submit that is due primarily to our own economic policy blunders. As for the other points: Who cares if Russia is selling equipment to China, Those torpedos (Aircraft Carrier Killers) which you so alarmingly called attention to have been around for years. They are wake homing torpedoes, and you are right we have no defense against them. BUt we have the same thing. Lets also not forget that having a torpedo doesnt do much good if you cant get close enough to launch it, and Chinese submarines are noisy and easy to track. Yes Chinese military doctrine calls for a military confrontation with the US within 20 to 30 years. So what? At least we know about it. If I were you I would be more concerned with an internal revolution inside China destabilizing the government, and causing a civil war. That is more of a threat than China itself. So in short what I am trying to say is please do not bother me with alarmist uninformed right wing rhetoric. Thank you and have a nice day.
Is this a bug in tomcat or me?
Hi,
I am having major problems with the servletContext.
In my main class I do the following:
ServletContext context=getServletContext();
context.setAttribute("Key", Boolean.TRUE);
Then in one of my jsp tags if want to check the value of "Key" I do the
following:
Boolean active =
(Boolean)pageContext.getServletContext().getAttribute("Key");
If I want to change the value of "Key" I do the following:
Boolean active=(Boolean)context.getAttribute("Key");
active=Boolean.TRUE or FALSE;
context.setAttribute("Key",active);
I have also tried:
context.setAttribute("Key",Boolean.FALSE);
My problem is no matter what value I set, when I pull active out the value
of "Key" out of the context it is always TRUE.
Any ideas what I am doing wrong?
Any help is appreciated
Regards
Alex
Help with refreshing servletContext please.
Hi,
I am implementing a method of caching lists that I want available to all my
web users. I place lists in the servletcontext via:
context.setAttribute("storeroomList",storerooms );
When the lists change I recall my cachelist method which gets the new data
and then put the list back into the session using the above line of code. I
thought that would replace the present list with the new one but
that is not occurring.
Is there another way I am supposed to be replacing attributes?
I thought about using removeAttribute followed by setAttribute but I am
worrying that someone might be accessing a page might need a list just as I
removing the list.
To test the problem I opened up a web page populated with my list and then
went to the database and changed some values in the list. My program then
caught these
changes, and repopulated the lists and then placed them in the context
again. I then opened up another window and the page was populated with the
old data.
Any help in this matter is appreciated.
Alex
Re: Still Can't set-up Tomcat for ssl. Please help.
Hi, Thanks for the reply. I changed the port to 443 but there was no change. Am I correct in assuming that once I have https working I should be able to access the same page via: http:\\localhost\index.html and https:\\localhost\index.html or https:\\localhost:443\index.html Because I can see the first page but the second page gives me a 404 error this page can not be found. As for the firewall, I am testing this implementation on an intranet. At this point I should not have to worry about firewalls etc., right? Thanks for any help Date: Tue, 3 Apr 2001 16:18:52 +0100 (BST) To: Tomcat-User [EMAIL PROTECTED] From: Kevin Sangeelee [EMAIL PROTECTED] Subject: Re: Can't set-up Tomcat for ssl. Please help. Message-ID: [EMAIL PROTECTED] If you're running Tomcat standalone, try changing the port value to 443 rather than 8443 (and make sure any firewalls are configured to allow this protocol) (or of course append :8443 to your https request). Kevin
Re: How to get around a tricky situation.
Just so I understand, to do the below I would have to modify my server.xml file...correct? This cannot be done in my web.xml file? Thanks Alex Date: Wed, 04 Apr 2001 09:47:56 +0200 To: [EMAIL PROTECTED] From: =?iso-8859-1?Q?St=E9phane?= BAUDET [EMAIL PROTECTED] Subject: Re: How to get around a tricky situation. Message-ID: [EMAIL PROTECTED] Hello You could also create a new "empty" context called /images with docbase properly set to the location of your images. This context will serve your images.
How to get around a tricky situation.
Hi, I need some advice on how I might fix a problem with one of our web apps. We farmed out an app that works ok except that the web pages which are created by servlets are looking for images in the tomcat root images directory. This presents a problem in that if I create a war of our app I also have to distribute and copy the images over to the root images directory. Can I set up my web.xml file so that when a web page looks for an image in the /images directory it actually pulls them out of my myWebApp/images directory. What I am trying to achieve is one war file that I can use to distribute our app without having the customer copy images over to the root/images directory. Thanks for any help. Regards Alex Colic-0132
Re: ** Help required: Err in Apache httpd could not be started **
Have you examined the paths in tomcat/conf/workers.properties? you need to set workers.tomcat_home and workers.java_home, and also your path separator '/' for NIX, '\' for Windows. HTH Alex - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Mon 02 April 2001 09:22 Subject: ** Help required: Err in Apache httpd could not be started ** : Hi, : : When I tried to start apache, which is configured to tomcat, it gives me : following error. : : httpd could not be started : : the error log file of apache says : [emerg] (2)No such file or directory: Error while opening the workers : : My OS: linux : : Regards, : Prashanth :
how to access a properties file as a resource.
Hi,
I have a properties file in the web-inf directory of my web app. How can I
access that file. It holds my localization settings I have tried.
String pathSeperator =File.separator.
InputStream is=context.getResourceAsStream("Web-inf" + pathSeperator +
"pwWorkRequestProLocalization");
PropertyResourceBundle res= new PropertyResourceBundle(is);
When the input stream tryes to get the resource I get the following Tomcat
error:
Ctx( ): Unsafe path C:\JBuilder4\Projects\pwWorkRequest
/Web-inf\pwWorkRequestProLocalization"
And when the PropertyResourceBundle tries to read the input stream I get a
nullpointerexception.
I have tried various strings to pass to context.getResourceAsStream() but I
have not been successful. Any help is appreciated.
NullPointerException in Catalina StandardClassLoader when JAR with no manifest is added to one of the lib directories
NullPointerException in Catalina StandardClassLoader when JAR with no manifest is added to one of the lib directories Adding manifest to the jar fixes the problem D:\java\apache\tomcat4\bincatalina runUsing CLASSPATH: d:\java\apache\tomcat4\bin\bootstrap.jar;c:\java\jdk\lib\tools.jarjava.lang.NullPointerException at org.apache.catalina.loader.Extension.getAvailable(Extension.java:300) at org.apache.catalina.loader. .addRepositoryInternal(StandardClassLoader.java:1133) at org.apache.catalina.loader.StandardClassLoader.init(StandardClassLoader.java:219) at org.apache.catalina.startup.Bootstrap.createCatalinaLoader(Bootstrap.java:328) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:121)Exception in thread "main" java.lang.IllegalArgumentException: addRepositoryInternal: java.lang.NullPointerException at org.apache.catalina.loader.StandardClassLoader.addRepositoryInternal(StandardClassLoader.java:1145) at org.apache.catalina.loader.StandardClassLoader.init(StandardClassLoader.java:219) at org.apache.catalina.startup.Bootstrap.createCatalinaLoader(Bootstrap.java:328) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:121)D:\java\apache\tomcat4\bin
FW: RE: how to access a properties file as a resource.
But that would mean that the property file is somewhere on the class path. I want it in the web-inf/ directory. Do you understand what I mean? Date: Mon, 2 Apr 2001 06:53:38 -0700 To: "'[EMAIL PROTECTED]'" [EMAIL PROTECTED] From: William Kaufman [EMAIL PROTECTED] Subject: RE: how to access a properties file as a resource. Message-ID: 635802DA64D4D31190D500508B9B04108214E1@dcsrv0 Use java.util.ResourceBundle.getBundle(). -- Bill K.
JNDI LDAP Realm for Tomcat 4.0 Tomcat 3.2x alpha3 available: NEED YOUR FEEDBACK!
Title: JNDI LDAP Realm for Tomcat 4.0 Tomcat 3.2x alpha3 available: NEED YOUR FEEDBACK!
Dear tomcat users and developers,
This is an implementation of JNDI and LDAP realm for Tomcat 3 and 4
I would greatly appreciate you feedback regarding its functionality.
Alex Roytman
download from http://www.peacetech.com/java/files/apache/tomcat/
JndiRealm authenticates and authorizes users against JNDI. It was tested against LDAP JNDI
with Sun's and Netscape's jndi providers
LdapRealm authenticates and authorizes users directly against LDAP using Netscape LDAP JDK.
These two realms are interchangeable you can switch between them without many configuration changes.
According to my tests it performs 10 faster under 20 concurrent threads than JNDI with
Sun's LDAP provider. This is not final result because I need to test and tune-up multithreaded
access and synchronization there might be some misunderstanding on my part.
I also noticed some cases of JNDI loosing connection to the server under heavy multithreaded
load while Netscape's LDAP handled it nicely.
There are four classes in the package :
JndiRealm and LdapRealm are for Tomcat 3.2x
JndiRealmCatalina and LdapRealmCatalina for Tomcat 4.0
className=com.peacetech.webtools.tomcat.JndiRealm JNDI TOMCAT 3.2x
className=com.peacetech.webtools.tomcat.JndiRealmCatalina JNDI TOMCAT 4.0
className=com.peacetech.webtools.tomcat.LdapRealmCatalina LDAP TOMCAT 4.0
className=com.peacetech.webtools.tomcat.LdapRealm LDAP TOMCAT 3.2x
Jndi/LdapRealm uses searchBindDN and searchBindCredentials to connect to a directory.
Then it looks for exactly one user name matching searchFilter in searchBaseContext
scoped by searchScopeAsString (values are base, one, sub according to LDAP URL rules)
If one and only one matching directory object is found it will use this object and
tomcat supplied credentials to authenticate the user.
If successful Realm will fetch user roles using JNDI attributes listed in securityAttributes
(comma separated directory attribute names). If attributesReadByOwner = true Realm will use
authenticated user itself to pool the attributes from directory otherwise it will use searchBindDN
to retrieve the attributes.
If roleMapperClass is specified Realm will use it to map user roles onto application roles
specific for each web context for tomcat 3.2x and specific for each defined Realm for tomcat 4.2.
Provided SimpleRoleMapper implementation will read role map from either roleMapperSourceUrl
(if specified) or for tomcat 3.2x from WEB-INF/role-map.xml file in each web context
if no roleMapperSourceUrl was defined (if WEB-INF/role-map.xml file does not exist in a context
no mapping for this context will occur)
PARAMETERS:
jndiInitialContextFactory = com.sun.jndi.ldap.LdapCtxFactory
(or com.netscape.jndi.ldap.LdapContextFactory)
This attribute for JndiRealm ONLY.
It corresponds to javax.naming.Context.INITIAL_CONTEXT_FACTORY
directoryUrl = ldap://207.176.93.66:389
This attribute for both JndiRealm and LdapRealm.
It corresponds to javax.naming.Context.PROVIDER_URL
jndiSecurityAuthentication = simple
This attribute for JndiRealm ONLY.
It corresponds to javax.naming.Context.SECURITY_AUTHENTICATION
jndiSecurityProtocol = ( vendor default or ssl, or vendor specific)
This attribute for JndiRealm ONLY.
It corresponds to javax.naming.Context.SECURITY_PROTOCOL
searchBindDN = cn=ldap-user,o=pti
This attribute for both JndiRealm and LdapRealm. User name to bind to directory
a to perform user name lookups. It corresponds to javax.naming.Context.SECURITY_PRINCIPAL
searchBindCredentials = mypassword
This attribute for both JndiRealm and LdapRealm. Password for searchBindDN
It corresponds to javax.naming.Context.SECURITY_CREDENTIALS
searchBaseContext = o=pti
Base context for user lookups
ldapVersion = 3
This attribute for LdapRealm ONLY. Defines LDAP version.
searchScopeAsString = base | one | sub
defines search scope base - object scope, one - one level scope, sub - subtree scope.
attributesReadByOwner = true
defines who will read securityAttribures from the directory. If true authenticating user account
will be used to retrieve the roles otherwise the searchBindDN account used for user name lookups will
fetch the attributes. It is useful when either one or the other do not have permission to read the
attributes so you can chose the one which has this permissions
searchFilter = cn={0}
Filter to lookup authorizing user. Support java.text.MessageFormat.
The only parameter is to java.text.MessageFormat pattern authorizing username.
i.e. jndiSearchFilter = cn={0} for user alex will result in lookup for cn=alex
securityAttributes = securityEquals
One or more directory attributes separated with semicolon which contains security roles
attributes can be multivalued. If blank no attempt to retrieve roles from directory will be done
roleMapperClass = com.peacetech.webtools.tomcat.SimpleRoleMapper/
ATTNTION: It requires SAX2/JAX1.1 (Apache Xerces
JndiRealm for Tomcat 4.0 and 3.2x alpha2 is available
Title: JndiRealm for Tomcat 4.0 and 3.2x alpha2 is available
JndiRealm for Tomcat 3.2 and Tomcat 4.0 readme:
http://www.peacetech.com/java/files/apache/tomcat/jndi-auth.html
JndiRealm for Tomcat 3.2 and Tomcat 4 Alpha 2 download:
http://www.peacetech.com/java/files/apache/tomcat/jndi_auth_alpha2.jar
(Please use java jar or zip utility to extract files)
I would greatly appreciate your feedback
Alex Roytman
[EMAIL PROTECTED]
!-- JndiRealm authenticates and Authorizes users against JNDI. It was developed and tested
against LDAP JNDI (Sun's and Netscape's jndi provider)
JndiRealm uses JNDI_SECURITY_PRINCIPAL and JNDI_SECURITY_CREDENTIALS to connect to a directory.
Then it looks for exactly one user name matching jndiSearchFilter in entire subtree
of jndiInitialContext. If one and only one matching directory object is found it will use this
object and tomcat supplied credentials to authenticate and fetch roles.
If succesful it will fetch user roles using JNDI attributes listed in jndiRolesAttributes
If roleMapperClass is specified it will use it to map user roles onto application roles
specific for each web context (tomcat 3.2x).
Provided SimpleRoleMapper implementation will read role map from either roleMapperSourceUrl or
tomcat 3.2x only WEB-INF/role-map.xml file in each web context
className=com.peacetech.webtools.tomcat.JndiRealm TOMCAT 3.2x
className=com.peacetech.webtools.tomcat.JndiRealmCatalina TOMCAT 4.0
Following are JNDI Environment parameters which are passed to straight to
new javax.jndi.directory.InitialDirContext(Hashtable env)
JNDI_INITIAL_CONTEXT_FACTORY = com.sun.jndi.ldap.LdapCtxFactory
(or com.netscape.jndi.ldap.LdapContextFactory netscape's seems to be faster)
JNDI_PROVIDER_URL = ldap://207.176.93.66:389
JNDI_SECURITY_AUTHENTICATION = simple
JNDI_SECURITY_PRINCIPAL = cn=ldap-user,o=pti //finds authorizing users by filter in directory
JNDI_SECURITY_CREDENTIALS = peacetech
JNDI_SECURITY_PROTOCOL =
jndiInitialContext = o=pti
Root context for user lookups
jndiSearchFilter = cn={0}
Filter to lookup authorizing user. Support java.text.MessageFormat.
The only parameter is to java.text.MessageFormat pattern authorizing username.
i.e. jndiSearchFilter = cn={0} for user alex will result in lookup for cn=alex
jndiRolesAttributes = securityEquals
One or more directory attributes separated with semicolon which contains security roles
attributes can be multivalued. If blank no attempt to retrieve roles from directory will be done
roleMapperClass = com.peacetech.webtools.tomcat.SimpleRoleMapper/
ATTNTION: It requires SAX2/JAX1.1 (Apache Xerces or Sun JAXP1.1 distribution)
Implemntation of RoleMapper interface to be used to transform user directory roles
to application roles. In tomcat 3.2x MapperClass is server wide but actual mapping data
is context specific (unless you specified roleMapperSourceUrl)
in tomcat 4.0 both RoleMapper and mapping data are Realm specific and you have to specify
roleMapperSourceUrl. If it is blank no role mapping will occur
roleMapperSourceUrl=file:///d:/tomcat4/conf/my-role-map.xml
URL to RoleMapper source. In tomcat 3.2x if it is not specified we try to find file
WEB-INF/role-map.xml in every initializing tomcat context.
contextDirMaxPoolSize = 20
JNDI does not allow multi-threaded access to a single context instance. We chose to pool contexts which
do user filter lookup instead creating and re-authenticating every time. Access to pool
is synchronized
--
!-- Tomcat 3.2 --
RequestInterceptor
className=com.peacetech.webtools.tomcat.JndiRealm
debug=1
JNDI_INITIAL_CONTEXT_FACTORY = com.sun.jndi.ldap.LdapCtxFactory
JNDI_PROVIDER_URL = ldap://207.176.93.66:389
JNDI_SECURITY_AUTHENTICATION = simple
JNDI_SECURITY_PRINCIPAL = cn=ldap-user,o=pti
JNDI_SECURITY_CREDENTIALS = mypassword
JNDI_SECURITY_PROTOCOL =
jndiInitialContext = o=pti
jndiSearchFilter = cn={0}
jndiRolesAttributes = securityEquals
contextDirMaxPoolSize = 20
roleMapperClass = com.peacetech.webtools.tomcat.SimpleRoleMapper/
!-- Tomcat 4 --
Realm className=com.peacetech.webtools.tomcat.JndiRealmCatalina
debug=1
JNDI_INITIAL_CONTEXT_FACTORY = com.sun.jndi.ldap.LdapCtxFactory
JNDI_PROVIDER_URL = ldap://207.176.93.66:389
JNDI_SECURITY_AUTHENTICATION = simple
JNDI_SECURITY_PRINCIPAL = cn=ldap-user,o=pti
JNDI_SECURITY_CREDENTIALS = mypassword
JNDI_SECURITY_PROTOCOL =
jndiInitialContext = o=pti
jndiSearchFilter = cn={0}
jndiRolesAttributes = securityEquals
contextDirMaxPoolSize = 20
roleMapperClass = com.peacetech.webtools.tomcat.SimpleRoleMapper
roleMapperSourceUrl=file:///z:/Projects/Gao/gwiz/web/gwiz/WEB-INF/role-map.xml /
!-- *** End of PeaceTech JNDI Authentication Support ** --
Re: Bad Links
Try here. http://jakarta.apache.org/builds/jakarta-tomcat/release/v3.2.1/bin/win32/i38 6/ HTH Alex - Original Message - From: "Eric Bewley" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sat 31 March 2001 16:48 Subject: Bad Links : I am unable to find the Jakarta NT service file at the link you : provide. There is no such directory. : : Eric : :
Re: JSP Load on startup?
just the same with servlets - Original Message - From: Angel Blesa Jarque To: [EMAIL PROTECTED] Sent: Friday, March 30, 2001 4:04 PM Subject: JSP Load on startup? Hello All, I would like to know how load JSP(pre-compiled) on startup. I know how do it with servlets, from web.xml file, but no with JSP, my JSPs be compiled before deploy and install the web application. Thanks in advance and rgds, Angel Blesa Jarque C.A.S.A.- E.A.D.S - E S P A C I O Departamento de Instrumentacion y EnsayosDivision Espacio Tel: (34 1) 585 71 44Av. de Aragon, 404 Fax: (34 1) 747 47 9928022 Madrid - Spain E-mail: [EMAIL PROTECTED]
Tomcat Security Architecture and RSA ACE authentication
Title: Tomcat Security Architecture and RSA ACE authentication Hello, I wrote JNDI(LDAP) realm for tomcat 3.x based similar to JDBCRealm provided with tomcat My client is going to adopt RSA ACE security infrastructure which to my understanding will require users to append a hardware generated number to their passwords when they authenticate. So we will have system where password changes every 15 seconds and it can not be cached in tomcat and used for subsequent accesses to LDAP (unless your software is RSA ACE aware and can deal with it somehow) (- I am not really familiar with RSA ACE security so I might be missing something here -) If I understand correctly, tomcat 3.x has following security architecture: 1. Extract user/password from user Session for Form based authentication (from headers for Basic authentication) 2. For *every request* perform authentication and authorization This might be a problem if password on backend changes constantly. Cached password will expire in lets say 15 second and that will break tomcat's security One solution to the problem would be to cache all authentication/authorization info in user session (you already caching username and password for form based authentication there) and use it as a poof of successful authentication for all subsequent request. Do you see any problems with this approach? Does tomcat4 security architecture handles this better?
RE: Tomcat Security Architecture and RSA ACE authentication
Title: RE: Tomcat Security Architecture and RSA ACE authentication -Original Message- From: Roytman, Alex Sent: Monday, March 26, 2001 1:38 PM To: '[EMAIL PROTECTED]' Subject: RE: Tomcat Security Architecture and RSA ACE authentication Craig, Thank you for such a prompt reply I will be glad to contribute my code as soon as I resolve the issue I outlined. If I can store authentication/authorization info in users session then my staff is a little bit to complicated for the task in hand. I was trying to accommodate tomcat3.x architecture and not to store security info in user session so I developed special cache for LDAP data which expires after specified time (let say every 5 minutes) which causes re-authentication and refetching user roles from LDAP If we cache security info in user session all this LDAP caching staff would be useless Could tomcat 3.x guys comment on this please? Alex -Original Message- From: Craig R. McClanahan [mailto:[EMAIL PROTECTED]] Sent: Monday, March 26, 2001 1:28 PM To: '[EMAIL PROTECTED]' Subject: Re: Tomcat Security Architecture and RSA ACE authentication On Mon, 26 Mar 2001, Roytman, Alex wrote: Hello, I wrote JNDI(LDAP) realm for tomcat 3.x based similar to JDBCRealm provided with tomcat Would you be interested in contributing this code to the Tomcat 3 (and/or 4) code bases? My client is going to adopt RSA ACE security infrastructure which to my understanding will require users to append a hardware generated number to their passwords when they authenticate. So we will have system where password changes every 15 seconds and it can not be cached in tomcat and used for subsequent accesses to LDAP (unless your software is RSA ACE aware and can deal with it somehow) (- I am not really familiar with RSA ACE security so I might be missing something here -) If I understand correctly, tomcat 3.x has following security architecture: 1. Extract user/password from user Session for Form based authentication (from headers for Basic authentication) 2. For *every request* perform authentication and authorization This might be a problem if password on backend changes constantly. Cached password will expire in lets say 15 second and that will break tomcat's security One solution to the problem would be to cache all authentication/authorization info in user session (you already caching username and password for form based authentication there) and use it as a poof of successful authentication for all subsequent request. Do you see any problems with this approach? Does tomcat4 security architecture handles this better? In Tomcat 4.0, if you are running under a session (which is automatic if you use form-based login), the user principal object retrieved from the Realm is cached in the Session the first time that it is authenticated, so the Realm is consulted only once. This sounds to me like it operates in exactly the way you are proposing. In 3.x, it should be conceptually feasible to do the same thing -- I don't know that code base well enough (at the moment) to know whether this would require modification to the session implementation object or not. Craig
How to change context parameter?
Hi,If you have a jsp how can you change the
context parameter.Eg. in you web.xml file you
have:context-paramparam-nameApp/param-nameparam-valuewr/param-value
descriptionThe short name for this application. Do
NotModify./description/context-paramYou can read
this viaServletContext
context=config.getServletContext(); String name="App";
String value=(String)context.getInitParameter(name);
System.out.println("value: " + value);How do you change the value of the
parameter. E.g.. change the value of APPfrom wr to req.Any help is
appreciated.Alex
How to set user.dir in web.xml
Hi,I have a
database in the root directory of my web app that I use with myJSP. I want
to create a war file that does not require any further userintervention in
configuring the application.I am not using a dsn to connect to my access
database rather I am using thebelow string.DRIVER={Microsoft Access
Driver(*.mdb)};DBQ=pwWorkFlow;DefaultDir="c:\tomcat\webapps\myCompany\;The
above string works as long as I set the DefaultDir manually. I don'twant the
user to have to do that. I noticed the user.dir pointed to theabove
directory. Is there a way I can set the DefaultDir in the above
stringautomatically to point to the root directory of my web app.I
hope the above made sense.Any help is
appreciated.Alex
how to read servletcontext comments?
Hi, I am creating an jsp admin screen to allow users to
modify programsetting found in web.xml. The below code reads the context
paramters andcreates a simple table. What I can't figure out to read is the
attributecomments. Any idea how to do this.Any help is
appreciated.Alex% ServletContext
context=config.getServletContext(); Enumeration
enum=context.getInitParameterNames(); String name; String
value; while(enum.hasMoreElements()) {
name=(String)enum.nextElement();
value=(String)context.getInitParameter(name);
%
TRTD%=name%/TDTDINPUT TYPE="text"
size="40"
value="%=value%"/TDTD/TD/TR%
}%
