I will try and investigate further. How about the need to place servlets in
packages? Can;t seem to get it work unless I have servlets in a package.
Thanks for you help.
-Ray
----- Original Message -----
From: "Richard Draucker" <[EMAIL PROTECTED]>
To: "R Felipe" <[EMAIL PROTECTED]>
Sent: Tuesday, May 15, 2001 11:05 PM
Subject: Re: Simplest Possible Servlet
> I have 3 different installations of Tomcat, but I always
> remove the examples directory as one of the first things
> after installation. So, I'm not sure where your conflict
> is coming in.
>
> Check the web.xml file under \examples and see if they
> have a HelloWorld servlet declared in there. Its possible
> their HelloWorldExample is an alias for a servlet named
> HelloWorld and that's causing your conflict.
>
> Another maybe...
> in your \WEB-INF\web.xml file, try aliasing your servlet
> and see if you can hit it with the alias name within your
> \classes directory.
>
> My suggestions are all aimed at a servlet name
> conflict. That's the only thing I can think of for yours
> to run under a classes\subdirectoryName but not in the
> parent directory.
>
>
>
> On Wed, 16 May 2001, you wrote:
> > Thanks for replying. Here's an update on my progress:
> >
> > On the examples folder (c:\tomcat\webapps\examples\WEB-INF\classes)
where
> > Tomcat examples are working but mine won't. I tried renaming my
> > "HelloWorld" to Tomcat's "HelloWorldExample" and it works!! So
somewhere it
> > is configured to look for "specific" file names. I checked the examples
> > folder (same as above) and I found 3 "properties" file.
> > LocalStrings.properties, LocalString_en.properties, and
> > LocalString_es.properties. I couldn't find any reference where a
filename
> > may have been hard-coded. But I know that this is what the
"ResourceBundle"
> > class is using. I think it's for different language support. "en" for
> > english and "es" for spanish. Anyway, I still don't know why my own
> > HelloWorld wouldn't run. At this point I don't care because it's just
the
> > example and there's a configuration there somewhere for it I'm sure.
> >
> > Now to my real servlet folder (c:\tomcat\webapps\ROOT\WEB-INF\classes).
> >
> > The same HelloWorld program only works if I put it in a package. So I
> > create a folder under \classes\ called "mypackage" and add the line
"package
> > mypackage;" to my java file. If I don't I get the error:
> >
> > Location: /servlet/helloworld
> > Internal Servlet Error:
> >
> > java.lang.IllegalAccessException: helloworld
> > at java.lang.Class.newInstance0(Native Method)
> > at java.lang.Class.newInstance(Class.java:237)
> > at
> >
org.apache.tomcat.core.ServletWrapper.loadServlet(ServletWrapper.java:268)
> > at org.apache.tomcat.core.ServletWrapper.init(ServletWrapper.java:289)
> > at org.apache.tomcat.core.Handler.service(Handler.java:254)
> > at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
> > at
> >
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79
> > 7)
> > at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
> > at
> >
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
> > onnectionHandler.java:210)
> > at
> >
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
> > at
> >
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
> > at java.lang.Thread.run(Thread.java:484)
> >
> > On the same folder (under \classes\) there is a java servlet file called
> > SnoopServlet and this one works. So why is it that I need to have my
> > servlets in a package? Is this how Tomcat is suppose to work out-of-box
> > without configuration? It doesn't make sense.
> >
> > -Ray
> >
> >
> >
> >
> >
> >
> >
> >
> > ----- Original Message -----
> > From: "Richard Draucker" <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Tuesday, May 15, 2001 9:49 PM
> > Subject: Re: Simplest Possible Servlet
> >
> >
> > > Couple of things...
> > > First, yes, Jrun and Tomcat are very different. Jrun does
> > > not fully conform to the J2EE webapp spec. It allows
> > > servlets to be run from all over the place and even has an
> > > old 'servlets' directory for backward compatibility.
> > > Tomcat requires that your directory structure look like:
> > > webapps/html/WEB-INF/classes
> > > ... where HTML pages go in whatever you name the 'html'
> > > directory and sevlets go in the /classes directory. You
> > > need not declare the servlets in the web.xml file if you
> > > access them via http://yoururl.com/servlets/myservlet
> > > syntax. But, if you want to use
> > > http://yoururl.com/helloworld
> > > the alias must be declared in the web.xml file in the
> > > WEB-INF directory.
> > > Since you reference the HelloWorldExample working 'in the
> > > same directory', I'm wondering if you maybe dropped a new
> > > HelloWorld servlet in the /classes directory under
> > > webapps/examples. If this is the case, Tomcat may not see
> > > it. I believe the examples directory exists only for
> > > reference and that the url
> > > http://youurl.com/examples/servlet/HelloWorldExample is
> > > actually reaching a servlet inside an examples.war file.
> > > Check your server.xml file and see if you have a context
> > > for webapps/examples.
> > > You may have better success creating a new J2EE compliant
> > > directory structure and dropping your servlet in there.
> > >
> > >
> > >
> > >
> > > On Wed, 16 May 2001, you wrote:
> > > > Sorry I didn't mention but the case is correct. Java file is called
> > > > HelloWorld.java, class file is called HelloWorld.class.
> > > >
> > > > -Ray
> > > >
> > > > ----- Original Message -----
> > > > From: "Richard Draucker" <[EMAIL PROTECTED]>
> > > > To: <[EMAIL PROTECTED]>
> > > > Sent: Tuesday, May 15, 2001 8:31 PM
> > > > Subject: Re: Simplest Possible Servlet
> > > >
> > > >
> > > > > Easy question of the day...
> > > > > as the trace says, wrong name: helloworld
> > > > > try HelloWorld instead.
> > > > > Yep, case sensitivity strikes again.
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > On Tue, 15 May 2001, you wrote:
> > > > > >
> > > > > > Here is the simplest possible servlet from the Core Servlets
book
> > from
> > > > Sun
> > > > > > by Marty Hall:
> > > > > >
> > > > > > import java.io.*;
> > > > > > import javax.servlet.*;
> > > > > > import javax.servlet.http.*;
> > > > > >
> > > > > > public class HelloWorld extends HttpServlet {
> > > > > > public void doGet(HttpServletRequest request,
> > HttpServletResponse
> > > > > > response)
> > > > > > throws ServletException, IOException {
> > > > > > response.setContentType("text/html");
> > > > > > PrintWriter out=response.getWriter();
> > > > > > out.println("Hello World");
> > > > > > }
> > > > > > }
> > > > > >
> > > > > >
> > > > > >
> > > > > > This code (above) runs perfectly on my JRun server. When I try
it
> > on my
> > > > > > Tomcat I get an error 500 (see below):
> > > > > >
> > > > > > Internal Servlet Error:
> > > > > >
> > > > > > java.lang.NoClassDefFoundError: HelloWorld (wrong name:
helloworld)
> > > > > > at java.lang.ClassLoader.defineClass0(Native Method)
> > > > > > at java.lang.ClassLoader.defineClass(ClassLoader.java:486)
> > > > > > at
> > > >
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111)
> > > > > >
> > > > > > -----rest of error here.......
> > > > > >
> > > > > > You might be thinking I don't have the class file on the correct
> > > > directory
> > > > > > but another hello world example from Tomcat is working perfectly
on
> > the
> > > > same
> > > > > > directory. Here is the code for the one that works.
> > > > > >
> > > > > > /* $Id: HelloWorldExample.java,v 1.2.4.1 2000/07/05 17:45:01
nacho
> > Exp $
> > > > > > *
> > > > > > */
> > > > > >
> > > > > > import java.io.*;
> > > > > > import java.text.*;
> > > > > > import java.util.*;
> > > > > > import javax.servlet.*;
> > > > > > import javax.servlet.http.*;
> > > > > >
> > > > > > /**
> > > > > > * The simplest possible servlet.
> > > > > > *
> > > > > > * @author James Duncan Davidson
> > > > > > */
> > > > > >
> > > > > > public class HelloWorldExample extends HttpServlet {
> > > > > >
> > > > > >
> > > > > > public void doGet(HttpServletRequest request,
> > > > > > HttpServletResponse response)
> > > > > > throws IOException, ServletException
> > > > > > {
> > > > > > ResourceBundle rb =
> > > > > >
> > > > ResourceBundle.getBundle("LocalStrings",request.getLocale());
> > > > > > response.setContentType("text/html");
> > > > > > PrintWriter out = response.getWriter();
> > > > > >
> > > > > > out.println("<html>");
> > > > > > out.println("<head>");
> > > > > >
> > > > > > String title = rb.getString("helloworld.title");
> > > > > >
> > > > > > out.println("<title>" + title + "</title>");
> > > > > > out.println("</head>");
> > > > > > out.println("<body bgcolor=\"white\">");
> > > > > > out.println("<body>");
> > > > > >
> > > > > > // note that all links are created to be relative. this
> > > > > > // ensures that we can move the web application that this
> > > > > > // servlet belongs to to a different place in the url
> > > > > > // tree and not have any harmful side effects.
> > > > > >
> > > > > > // XXX
> > > > > > // making these absolute till we work out the
> > > > > > // addition of a PathInfo issue
> > > > > >
> > > > > > out.println("<a
href=\"/examples/servlets/helloworld.html\">");
> > > > > > out.println("<img src=\"/examples/images/code.gif\"
> > height=24 "
> > > > +
> > > > > > "width=24 align=right border=0 alt=\"view
> > > > code\"></a>");
> > > > > > out.println("<a
href=\"/examples/servlets/index.html\">");
> > > > > > out.println("<img src=\"/examples/images/return.gif\"
> > height=24
> > > > " +
> > > > > > "width=24 align=right border=0
> > > > alt=\"return\"></a>");
> > > > > > out.println("<h1>" + title + "</h1>");
> > > > > > out.println("</body>");
> > > > > > out.println("</html>");
> > > > > > }
> > > > > > }
> > > > > >
> > > > > >
> > > > > > The only difference I can see is the ResourceBundle class. What
is
> > it?
> > > > Is
> > > > > > that what's causing my problem? I tried putting it on my code
and
> > I'm
> > > > > > getting the same error. Why does my first code works on JRun
and
> > not
> > > > > > Tomcat? Are there differences between these 2 webservers as far
as
> > > > these
> > > > > > HelloWorld programs are concerned. Thanks for your help.
> > > > > >
> > > > > > Struggling Newbie,
> > > > > >
> > > > > > -Ray
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > > ----------------------------------------
> > > > > Content-Type: text/html; name="unnamed"
> > > > > Content-Transfer-Encoding: quoted-printable
> > > > > Content-Description:
> > > > > ----------------------------------------
> > > > >
> > > > > --
> > > > > Richard Draucker, [EMAIL PROTECTED]
> > > > > Protected-Data.Com www.protected-data.com
> > > > > Remote data support for web developers.
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > --
> > > Richard Draucker, [EMAIL PROTECTED]
> > > Protected-Data.Com www.protected-data.com
> > > Remote data support for web developers.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> --
> Richard Draucker, [EMAIL PROTECTED]
> Protected-Data.Com www.protected-data.com
> Remote data support for web developers.
>
>
>
>
>
>
>
>
