pleaseeee help!!! please help guys....is it possible to update properties of an object in an iteration?
-Original Message- From: Dudley Butt@i-Commerce [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 03, 2001 2:47 PM To: [EMAIL PROTECTED] Subject: very important please help guysis it possible to update prope rties of an object in an iteration? pleeaaasssee help What i have is this... . . . I want ot update the "state" property using the checkbox . does anyone have any suggestions? Pleeeaaaeee!!
RE: nested logic:iterate tags
I'm just using the following dummy data in my bean:
private String[] headings = {"User", "Job Group", "Job", "Spreadsheet",
"DataUpdated", "Status", "Submitted" };
private String[][] data = { { "1", "2", "3", "4", "true", "6", "7"},
{"8", "9", "10", "11", "false", "13",
"14"} };
I've got get and set methods for both properties and generate a table with
the following:
<%-- Generate table headings --%>
<%-- Generate table data by nesting iterate tag --%>
Richard.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Thursday, May 03, 2001 4:52 PM
To: [EMAIL PROTECTED]
Subject: RE: nested logic:iterate tags
Richard,
What does the array look like? Can you post the logic for that array?
On Thu, 03 May 2001, Richard Murray wrote:
>
> Hi,
>
> For anyone interested I managed fix my problem with the following:
>
> scope="page">
>
>
>
>
>
>
>
>
> Regards
>
> Richard
>
> -Original Message-
> From: Richard Murray [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, May 03, 2001 2:44 PM
> To: '[EMAIL PROTECTED]'
> Subject: nested logic:iterate tags
>
>
> Hi,
>
> I'm trying to generate a table of data from a 2 dimensional array of
Strings
> called ( String[][] data ). I am trying to use the struts tag
> to loop through the data and generate the table. As it is
a
> 2 dimensional array I have nested the iterate statements as follows:
>
> scope="page">
>
>
>
>
>
>
> I get the following exception trying to run this:
>
> org.apache.jasper.compiler.CompileException:
> F:\projects\fcutc\deploy\fcutc\list.jsp(40,1) Unable to convert a String
to
> java.lang.Object for attribute collection
>
> I'm trying to use the id ("rows") from the first iterate statement as a
> variable in the second, however it seems it looks as though it is being
> treated as a string rather than a variable. I thought the id held the
> current object in the iteration, which in my case is an array.
>
> Hope someone can help. I'm pretty new to struts ( and JSP ) so I may have
> done something obviously wrong.
>
> Thanks.
>
> Richard Murray
> Software Engineer - Net Products Development
> QSP
> OLAS House, Team Valley Trading Estate,
> 5th Avenue Business Park,
> Gateshead, Tyne & Wear NE11 0XA
> Switchboard+44 (0) 191 402
> Direct line +44 (0) 191 402 3329
> email [EMAIL PROTECTED]
> website www.qspgroup.com
> QSP - Enabling e-Finance
>
>
>
>
> **
> This email and any files transmitted with it are confidential and
> intended solely for the use of the individual or entity to whom they
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> the system manager at [EMAIL PROTECTED]
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> This footnote also confirms that this email message has been swept by
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>
> http://www.qspgroup.com
> **
Thomas Peters
Senior Software Engineer
Aidera Solutions
Cell: 603-566-5406
Voice Mail: 603-888-7700
nesting logic:equals tags
Hi,
I'm iterating over an array of Strings containing the following dummy data {
"1", "2", "3", "4", "true", "6", "7"}. I want to apply the following logic:
if the String is "true" or "false" display a checkbox, else display the
String.
I attempted to nest the tags as follows, but this does not work:
I can only get this working as shown below:
However, this does not work properly as I have nested the notEquals logic
tags.
Is there a way to nest these tags or supply conditional operators ( e.g. &&,
|| ). Is there anyway to supply an else statement. I'm not sure I can
achieve what I want with these tags and may be better of with a scriptlet.
Hope someone can help.
Richard.
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URL for struts archive?
Can someone please give me the URL to go search thru all the struts archives? thanx
RE: URL for struts archive?
The struts user archive is at: http://www.mail-archive.com/struts-user%40jakarta.apache.org/ Richard. -Original Message- From: Dudley Butt@i-Commerce [mailto:[EMAIL PROTECTED]] Sent: Friday, May 04, 2001 10:32 AM To: [EMAIL PROTECTED] Subject: URL for struts archive? Can someone please give me the URL to go search thru all the struts archives? thanx ** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager at [EMAIL PROTECTED] This footnote also confirms that this email message has been swept by for the presence of computer viruses. http://www.qspgroup.com **
regd. action classes --- please help
Hi All, is there init() and destroy() like methods in Action class so that we can be sure that those methods will always be called by the action servlet? actually i need to aquire some resources (like database connection) and initialize the action class. i want to hold thoise resources through out the life of the action object. i want to release those resources only when i don't need the action object anymore. please help me in doing this. any other procedure to do this except init() & destroy() ? Regards Manabendra Sarkar
RE: Antwort: RE: Visual Age 3.5.3 & Tomcat with Struts
Hi Darren, One way to install Tomcat into VAJ 3.5.3 is to first install into 3.5. Store the 3.5 repository and /features/com-ibm-tomcat folder away. Install 3.5.3 and import tomcat from 3.5 repository and put the stored tomcat folder back in place. Jon. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: 01 May 2001 05:11 To: [EMAIL PROTECTED] Subject: Re: Antwort: RE: Visual Age 3.5.3 & Tomcat with Struts Dion, I had problems trying to configure the WTE. The documentation in VAJ was lousy in my opinion. I was able to get the default application working with WTE, access the samples, etc., but had troubles attempting to create an additional webapp. I followed the instructions in VAJ help for creating an additional webapp, but got an exception when reloading the servlet engine. The problem wasn't obvious, so after trying several different permutations of changes, I gave up. It may have been something simple, but I ran out of ideas on how to debug the configuration. Also, it seemed that the layout of directories, etc for WTE was different than a standard j2ee webapp structure. (e.g. the default app had no WEB-INF). I kind-of prefer open-source, j2ee compliance, etc. - Darren. dion@multitas k.com.au To: [EMAIL PROTECTED] cc: [EMAIL PROTECTED] 04/30/01 Subject: Re: Antwort: RE: Visual Age 3.5.3 & Tomcat with Struts 10:39 PM Please respond to struts-user Is there a reason you don't want to use the WebSphere Test Environment in 3.5.3? -- dIon Gillard, Multitask Consulting Work: http://www.multitask.com.au NetRexx: http://www.multitask.com.au/NetRexx.nsf Darren_James@ i2.com To: [EMAIL PROTECTED] cc: 01/05/2001 Subject: Re: Antwort: RE: Visual Age 3.5.3 & Tomcat with Struts 01:14 PM Please respond to struts-user > 1.) Install Tomcat 3.1 Test Environment & look into /path/to/vaj35/ide/features/com.ibm.ivj.tomcat/... to > find IVJJavaCompiler.java Tomcat Test Environment won't install on top of VA 3.5.3. It says that the correct version of VisualAge is not installed, and exits the installer application. Any ideas on how to trick the Tomcat Test Environment installer? It says it expects VisualAge 3.5, but apparently doesn't recognize 3.5.3 :< - Darren P.S. Thanks for the very detailed message on how to get things going with VA and Tomcat. Juergen.Walter @hrmcon.deTo: [EMAIL PROTECTED] cc: 04/27/01 04:49Subject: Antwort: RE: Visual Age 3.5.3 & Tomcat with Struts AM Please respond to struts-user Hi Darren, we're using VAJ 3.5.2 Enterprise with Tomcat and Struts. First we tried to run Struts 1.0b1 with Tomcat Test Env 3.1 but unfortunately Struts does not work with Tomcat 3.1's XML-Parser. If you want you can make a XML (javax.xml.*) & SQL (javax.sql.*) package and put it into Tomcats ./lib directory and add it to VAJ's classpath. But if you use Tomcat 3.2.1, struts works out of the box - but not that comfortable as the Tomcat Test Env does, e.g. you can't debug JSP and Servlet Code anymore :((( I did a hack (in Tomcats WebReaderXML.java to enable "jspPageCompiler" again) and added "com.ibm.ivj.tomcat.IJVJavaCompiler" again to re-enable in-workspace JSP and Servlet Debugging. Running Tomcat 3.2.1 in VAJ 3.5.x ~~~ In short: 0.) Prerequisites: * latest jakarta-servlet-api _source_ * tomcat 3.2.1 binary distribution (includes ./src already) * Tomcat 3.1 Test Environment from www.ibm.com/vadd (to get "com.ibm.ivj.tomcat.IVJJavaCompiler.java") * struts 1.0b1 source distribution 1.) Install Tomcat 3.1 Test Environment & look into /path/to/vaj35/ide/features/com.ibm.ivj.tomcat/... to find IVJJavaCompiler.java 2.) Start VAJ, do _not_ "Add feature Apache Test Env 3.1"!!! 3.) Create new Package, e.g. Apache_Tomcat_321 4.) Import all source from jakarta-servlet-api (do _not_ use servlet-api from VAJ or other precompiled javax.servlet.* - classes; they _must_ be compiled within VAJ Workspace to enable debugging of your own servlets and JSPs) into your Project 5.) import following --> compiled classes (not source!) <- from jasper.jar and webserver.jar (both in tomcat-3.2.1/lib/) jasper: all .class webserver: org.apache.tomcat.logging.Logger, org.apache.tomcat.logging.LogHelper, org.apache.tomcat.util.SimplePool If VAJ still complains about
RE: nesting logic:equals tags
Hi,
I've used a scriptlet as follows to achieve what I want, but I'd rather user
the struts tags if possible
<%
if ( element.equals( "true" ) )
{
out.println( "" );
}
else if ( element.equals( "false" ) )
{
out.println( "" );
}
else
{
out.println( "" + element + "" );
}
%>
If anyone knows how to do this using the struts logic tags then let me know.
Richard.
-Original Message-
From: Richard Murray [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 04, 2001 10:30 AM
To: [EMAIL PROTECTED]
Subject: nesting logic:equals tags
Hi,
I'm iterating over an array of Strings containing the following dummy data {
"1", "2", "3", "4", "true", "6", "7"}. I want to apply the following logic:
if the String is "true" or "false" display a checkbox, else display the
String.
I attempted to nest the tags as follows, but this does not work:
I can only get this working as shown below:
However, this does not work properly as I have nested the notEquals logic
tags.
Is there a way to nest these tags or supply conditional operators ( e.g. &&,
|| ). Is there anyway to supply an else statement. I'm not sure I can
achieve what I want with these tags and may be better of with a scriptlet.
Hope someone can help.
Richard.
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This email and any files transmitted with it are confidential and
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are addressed. If you have received this email in error please notify
the system manager at [EMAIL PROTECTED]
This footnote also confirms that this email message has been swept by
for the presence of computer viruses.
http://www.qspgroup.com
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RE: URL for struts archive?
I like these. http://marc.theaimsgroup.com/?l=struts-user&r=1&w=2 http://marc.theaimsgroup.com/?l=struts-dev&r=1&w=2 -Original Message- From: Dudley Butt@i-Commerce [mailto:[EMAIL PROTECTED]] Sent: Friday, May 04, 2001 4:32 AM To: [EMAIL PROTECTED] Subject: URL for struts archive? Can someone please give me the URL to go search thru all the struts archives? thanx
Re: Servlets, Beans, Struts, and Threading
This is definately not true. You need to make a distinction between web containers and EJB containers, or to be more specific EJBs themselves. There are some restrictions on EJBs with respect to threading. I'm not sure what they are exactly. But creating your own threads is perfectly fine in web containers like Tomcat. For example, for most of my Struts apps I have an initApplication servlet that runs on startup and loads some objects from the database into the application scope. Sometimes I spin off a thread from the init method that hangs around for the life of the app and periodically reloads the objects from the database. I probably could have subclassed ActionServlet and spun this thread off from the init method there. Sean, you could do the same thing with your Service thread. You don't need to turn it into a servlet. Will - Original Message - From: "Paul Tindall" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, May 03, 2001 3:37 PM Subject: Re: Servlets, Beans, Struts, and Threading > Sean, > > It is my undertanding that you do not want to do your own threading anywhere > within a J2EE container as bad things can happen. If you need to create a > timer process to kick off other communication processes, WebLogic and Resin > both have them and the containers will manage the threads. These timer > features are not part of the J2EE standard so I'm not sure about Tomcat or > other containers and what level of support they might have. > > Regards, > > Paul > > > - Original Message - > From: "Sean" <[EMAIL PROTECTED]> > To: "Struts Users" <[EMAIL PROTECTED]> > Sent: Thursday, May 03, 2001 10:31 AM > Subject: Servlets, Beans, Struts, and Threading > > > > Hello All, > > > > This is a simular question I asked on the Tomcat mailing list and never > got > > a reply. I was hoping someone could give me some good input on this topic > > from this list. > > > > If I have a process that needs to run within Tomcat&Struts to communicate > > with a remote server, and that process needs it's own thread of execution, > > what would be the best way to go about this in the Tomcat/Servlet > container > > world? I am not sure if each Servlet has it's own thread of execution so > I > > wasn't sure if I should just subclass Servlet or HttpServlet. I am not > sure > > of the ramifications of having a bean manage it's own threads and how that > > would effect Tomcat in general. > > > > Does anyone have any pointers, ideas, or suggestions on how they have done > > this or would go about doing this nicely in Tomcat? Would this be cross > > container code or Tomcat specific? > > > > Thanks, > > Sean > > >
RE: regd. action classes --- please help
I would advise that you subclass the Action class, like ObjectAction. the
below piece of code would work fine for you...
The parameters in the perform method will be send to the execute() method in
your subclasses. Hope this helps for ya all
If you want, you can also make the init() and destroy() methods abstract (if
each subclass wants to do soemthing different in the
init() and destroy() methods ).
cheers,
Amar..
public abstract class ObjectAction extends Action
{
public ActionForward perform( , , , )
{
init() ;
execute( , , , ) ;
destroy() ;
}
protected abstract ActionForward execute( , , , ) ;
}
public class Subaction extends ObjectAction
{
protected void execute( , , , )
{
}
}
-Original Message-
From: Manabendra Sarkar [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 04, 2001 6:38 AM
To: [EMAIL PROTECTED]
Subject: regd. action classes --- please help
Hi All,
is there init() and destroy() like methods in Action class so that we
can be sure that those methods will always be called
by the action servlet?
actually i need to aquire some resources (like database connection)
and initialize the action class. i want to hold thoise resources
through out the life of the action object. i want to release those resources
only when i don't need the action object anymore.
please help me in doing this. any other procedure to do this except
init() & destroy() ?
Regards
Manabendra Sarkar
Dynamic Error Messages
I can't figure out how to return dynamic error messages in the ActionErrors collection. In other words, if an exception is thrown in an Action object, I want to use the e.getMessage() to get the message description and use that to populate an ActionError. The ActionError class doesn't seem to have a constructor that supports this. Help! - Darryl
Bean:message with args
Hi all, Is there a way to acheive the following : "/> without resorting to scriplets, ie : would work but just doesn't sit right with me. Any ideas. Jon.
RE: database connection
Yes, I can get the DataSource reference in the ServletContext object of the
ActionServlet class. But I want to get the reference to the dataSource in
the DatabaseServlet class. Can anyone tell me how to get the reference to
the dataSource from the databaseServlet class? Thanks.
Ying
-Original Message-
From: Vivek Bhaskaran [mailto:[EMAIL PROTECTED]]
Sent: Thursday, May 03, 2001 5:21 PM
To: [EMAIL PROTECTED]
Subject: Re: database connection
A reference to the DataSource is stored in the ServletContext object... You
can get it from that.
- Original Message -
From: "Ying Teng" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, May 03, 2001 11:28 AM
Subject: RE: database connection
>
> What you described is true. Now my question is how to get the datasource
> without referencing the actionServlet. I wanted to intialize the database
> hashtable of the databaseServlet class in the databaseServlet init
function.
> In order to do that, I need to get the datasource. But I can not reference
> the actionServlet because the action is initialized after the database is
> initialized (as in the log file). Hope someone can give me some hints.
> Thanks.
>
> Ying
>
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, May 02, 2001 3:10 PM
> To: [EMAIL PROTECTED]
> Subject: RE: database connection
>
>
>
> You will add the key information to the datasource info in you
> struts-config.xml file it will look like this:
>
>key="[some name I'll use to reference this datasource]"
>autoCommit="false"
>description="Data Source Configuration"
>driverClass="org.gjt.mm.mysql.Driver"
>maxCount="4"
>minCount="2"
>password="pass"
>
> url
> ="jdbc:mysql://bethsoft.dev.zenimax.com:3306/test?user=user&password=pass
> "
>user="user"
> />
>
>
> Then, after that's done, the easiest way to access it is to reference it
by
> the action servlet (servlet), because using actionServlet you can just do
> servlet.findDataSource("the name you called your datasource") and voila,
> you have your datasource object. From that datasource object you can
> create a connection.
> If you cannot access the actionServlet, then it's a little more
> difficult--and actually I wouldn't be able to help much there, but at
least
> your question would then be "how do I get the datasource without
> referencing the actionServlet"
>
> -Dallas
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
Feedback
Hi all, I am new to struts and new to this list. I am evaluating the use of struts for a new project that I am starting. It looks fairly powerful, but since my experience with the framework is quite limited, I would like to get opinions from folks that have been using struts in real work web development projects. What do you like and what are the limitations? Thanks in advance, Whitney Hunter Online Architect WatchGuard Technologies, Inc.
Struts questions for evaluation
Hello Struts users, We are currently evaluating Struts and other web (MVC) frameworks and would like to ask you some questions: - Is there some struts-config XML-generation from some modeling tool (Rose for instance) ? We would like to design a state or activity diagram in such a tool then generate the navigation XML file. - Can struts behave like a real state machine ? i.e. how to ensure that some Action is performed only if another Action (or view but is not ideal) has been performed with some result (success to be simple). We would like this to be Struts-controlled, not developper- controlled (check session variables, etc.). We found the built-in Struts token system but this seem only to be used to demarcate transactions in a set of views. This allow to demarcate a transaction end (token value change) but not an inconstency within the transaction (i.e. i valide twice the first page of the transaction) as the token value will not change. - Why does the struts-example perform some scoped- variables cleanup at the end of every Action ? As these variables are defined as scoped in the struts- config XML file, they should naturally live during the specified scope lifetime. We don't understand that in the struts-example (maybe this is not mandatory). Thank you very much for your informations about Struts. Laurent.
javabean getters & setters and how properties are inferred.
I had a developer question how Struts infers property a name from a getter &
setter... and vice-versa.
This was the problem:
property: vTasks
getter: getVTasks()
At runtime, a "getter not found for property vTasks" error occurred. I
decided to research exactly what was going on... here's what I found in case
anyone is interested.
It's a feature, not a bug.
Wayne
[EMAIL PROTECTED]
-
The following is from the javabean spec at
http://java.sun.com/products/javabeans/docs/beans.101.pdf. It discusses how
a property name is derived from a getter or setter.
-
8.8 Capitalization of inferred names.
When we use design patterns to infer a property or event name, we need to
decide what rules
to follow for capitalizing the inferred name. If we extract the name from
the middle of a normal
mixedCase style Java name then the name will, by default, begin with a
capital letter.
Java programmers are accustomed to having normal identifiers start with
lower case letters.
Vigorous reviewer input has convinced us that we should follow this same
conventional rule
for property and event names.
Thus when we extract a property or event name from the middle of an existing
Java name, we
normally convert the first character to lower case. However to support the
occasional use of all
upper-case names, we check if the first two characters of the name are both
upper case and if
so leave it alone. So for example,
"FooBah" becomes "fooBah"
"Z" becomes "z"
"URL" becomes "URL"
We provide a method Introspector.decapitalize which implements this
conversion rule.
The decapitalize() method is below... straight from Sun. They look at the
getter, decapitalize the VTasks portion of getVTasks(), which is VTasks
since the 1st two characters are uppercase.
getVTasks -> VTasks
getvTasks->vTasks
Since we want to be able to infer the getter & setter from the property,
vTasks as a property -> getvTasks as a getter... which wasn't on your
bean... which is why you got the error.
public static String decapitalize(String name) {
if (name == null || name.length() == 0) {
return name;
}
if (name.length() > 1 && Character.isUpperCase(name.charAt(1)) &&
Character.isUpperCase(name.charAt(0))){
return name;
}
char chars[] = name.toCharArray();
chars[0] = Character.toLowerCase(chars[0]);
return new String(chars);
}
Hope this helps. I'll add something about this to the JSP Standards
document. There is already the following section on bean properties.
Bean Properties
Avoid properties that begin with two or more uppercase letters
AAA -> getAAA()
aaA -> getAaA()
AaA -> getAaA()???
How can I get a data source from custom tag?
Hi All,
I have different data sources defined in
'struts-config.xml'. I want to use one of them from a custom tag.
I know how to this from an Action class:
DataSource ds = (DataSource)
servlet.findDataSource("dsUsers");
But in the custom tag I don't have reference to the
'servlet' as in Action class How can I get it?
Any help will be appreciated.
10x, Anna
struts newbie trying to get onboard
Hello all, this is my first posting. I'm trying to get onboard here with one of those simple login application I'm sure you've all seen. I've spent some time trying to get this to work. I went through all steps to install struts on my workstation for Tomcat 3.2.1 and verified them several times. I even have the struts-example application working, so I've come a little ways already. I'm using the sample login.jsp that one can find almost anywhere, but I keep getting the same exception: - Root cause: javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection at org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:703) at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:441) at _0002flogin_0002ejsplogin_jsp_1._jspService(_0002flogin_0002ejsplogin_js p_1.java:71) - I'm sure my taglibs are set up correctly, and I do have the struts.jar file appended to the classpath. Any help would be appreciated. Thanks, Brett Here is the login.jsp file: <%@ page language="java" %> <%@ taglib uri="/WEB-INF/struts-form.tld" prefix="form" %> Username: Password: -
RE: Bean:message with args
Hello everybody,
I am trying to test the iterate tag and i am getting the following error..
Can somebody point out as to what i am doing wrong ? Thanks a lot. I am
including the jsp code also. I am using Tomcat 3.2 and struts 1.0
cheers,
Amar..
ERROR
-
javax.servlet.ServletException: Cannot create iterator for this collection
at
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImp
l.java:459)
at
_0002fpagerTest_0002ejsppagerTest_jsp_0._jspService(_0002fpagerTest_0002ejsp
pagerTest_jsp_0.java, Compiled Code)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.ja
va:130)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja
va:282)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java,
Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
BEAN
public class StatesBean
{
// stores an array list of states
private ArrayList states = new ArrayList() ;
public StatesBean()
{
states.add("ALABAMA");
states.add("ALASKA");
states.add("ARIZONA");
states.add("ARKANSAS" ) ;
states.add("CALIFORNIA") ;
states.add("COLORADO") ;
states.add("CONNECTICUT") ;
}
public Iterator getStates()
{
return states.iterator() ;
}
}
JSP:
<%@ page language="java" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<%@ page import =
"com.agilquest.onboard.presentation.actionforms.StatesBean" %>
<%
{
com.agilquest.onboard.presentation.actionforms.StatesBean statesBean =
new com.agilquest.onboard.presentation.actionforms.StatesBean() ;
pageContext.setAttribute("statesBean", statesBean,
PageContext.PAGE_SCOPE);
}
%>
A Question about Transaction Tokens
Hi All, I have just installed the struts1.0 b1 and the struts-example app. I wonder how the transaction token key works.Can anybody explain that to me please(it is a great stuff). I checked out the code a bit and found out that struts is creating a transaction token key by convereting the session id and the current time to byte array and appending it to a message digest . So how can the two tokens(one set before displaying the form and another set when submitting?) be equated when they have a time element involved in them.Antoher thing i could not undsrstand was that while saving the form the code retrieves the token using the request.getParameter(token_key), but where are we setting this paramater? Can somebody explain , how are things working here? Regards, YogeshGet Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
basic forms/config question
I have been trying to create a hello world with struts based on the login example. I have to the best of my knowledge done everything correctly as stated in examples and documentation. All I have is a simple page with a form and 2 text fields in the form yet I still get the following error. "runtime error in custom tag 'form' " I have read through all the documentation and can't figure out what I am doing wrong. Have you seen this? What is a good way to debug? Jeremy
Re: Servlets, Beans, Struts, and Threading
Per Paul's comment, Servlets are allowed to create threads (EJB's are not). However, a Servlet instance does get any special guarantees from the container regarding synchronization. Even a Servlet that is marked with the SingleThreadModel is not, to my knowledge, protected from concurrent use by other clients that can get to it. The only promise is that the container will not use it concurrently. So making your RMI class into a Servlet won't prevent two threads from using it at the same time. Probably you will create a 'listener' object in application scope at startup time. When the listener receives info from the server it should put it in application scope in an atomic (i.e. synchronized) manner If your Servlets/JSP's need to initiate communication you might have that go through another object. I don't know enough about what you're trying to do to make more specific suggestions. HTH, John Sean wrote: > John, > > If I subclass servlets does that mean they always run within their own > thread? The reason I ask is that this "process" I am talking about is a > connection to a remote server. The calls to and from this process are > asynchronous and thus the remote server can send messages to this process at > any time reguardless if a request is being processed by Tomcat or not. I > want to make sure that this process has its own processing space (so it > doesn't block) but still conform to the standards of the servlet container > (i.e. startup and stop). Since this process currently runs in its own > thread implementing our own Service architecture I thought I might be able > to subclass it and implement the Servlet interface in order to give it it's > own thread of execution in the servlet container. That was what lead me to > ask whether or not a Servlet is guaranteed to be in its own thread of > execution. > > Any insight you, Paul, or anyone else could give here would be greatly > appreciated. > > Sean > > - Original Message - > From: "John Raley" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Thursday, May 03, 2001 12:20 PM > Subject: Re: Servlets, Beans, Struts, and Threading > > > Sean, > > > > You would probably not write the task as a Servlet. Instead, as part of > your > > startup you'd put the task in application scope. Remember that > Servlets/JSPs > > that talk to the task are going to do so from different threads > (potentially at > > the same time). The task would probably manage its own threads. If it > > executes periodically check out the Timer / TimerTask classes in > java.util - > > they might save you a fair amount of work. There's no reason any of this > > should be Tomcat-specific.
possible bug? "object is not an instance of declaring class" message
Hi fellow struts users, I have been toiling with the following problem, and have not been able to solve it even after looking at the Struts source and thoroughly checking the mail archive. I wonder if it is a bug with Struts (?). The reason I dare say that the problem may lie with Struts is that my code works the first few times, but then fails. Here's a description: I have an Action class that creates a couple of javabeans and places them on the request. The JSP then displays them. The FIRST time I put my URL in the browser, I see the results of the JSP correctly. Now, if I modify the JSP (say, add a space and then delete it) and use the same URL, the whole thing gets recompiled, and again I see the JSP output correctly. OK so far. Then, when I use the same URL again, I get the following message: <[WebAppServletContext(3068837,InfoportalJava)] Root cause of ServletException javax.servlet.jsp.JspException: Exception accessing property ichannelType for bean anICLEntryBean: java.lang.IllegalArgumentException: object is not an instance of declaring class at org.apache.struts.taglib.logic.CompareTagBase.condition(CompareTagBase.java: 239) at org.apache.struts.taglib.logic.EqualTag.condition(EqualTag.java:90) at org.apache.struts.taglib.logic.ConditionalTagBase.doStartTag(ConditionalTagB ase.java:218) at jsp_servlet._jsp._ichannel._displayiclist._jspService(_displayiclist.java:13 5) at weblogic.servlet.jsp.JspBase.service(JspBase.java:27) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java :208) at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImp l.java:149) at org.apache.struts.action.ActionServlet.processActionForward(ActionServlet.ja va:1697) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1540) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:491) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java :208) at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletCo ntext.java:1127) at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java :1529) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120) This is caused by the compiled code that corresponds to the following Struts tag: ... (the 'value' attribute evaluates to a String such as "2".) Now, my javabean certainly has a property called 'ichannelType'; in fact, I wrote some code that tests that this bean property exists when the javabean gets placed on the request. So I don't see why that works for a few times at first and then fails. Any ideas on the subject will be greatly appreciated. In case this is necessary, I am using BEA Weblogic as a JSP container. thanks, Iraklis
NEED HELP
I have one jsp page that dynamically generated and looks like as below. I want to navigate to another jsp page when user selected 2 checkboxes and press submit button. How do I know which two check buttons are checked? and how I can pass customer number (key) and customer name to next page? Any good idea /help to accomplish this taks. Secondly on another jsp page I have three diffrent submit button ( <> <> and <> ) How do i can associate with these button with 3 diffrent actions? T H A N K S I N A D V A N C E TAHIR *--- --* | SEL CUSTOMERCUSTOMER CUSTOMER| | NUMBER NAME ADDRESS | *--- --* [] A ROSE ANN TORONTO, CANADA [] A CRISTINA ANGHEL NEW YORK, USA [] A DAVED MILLER LONDON, UK *-* | SUBMIT | *-*
RE: database connection
in the databaseservlet class do: getServletContext().getAttribute(key);
-Original Message-
From: Ying Teng
To: [EMAIL PROTECTED]
Sent: 5/4/01 8:17 AM
Subject: RE: database connection
Yes, I can get the DataSource reference in the ServletContext object of
the
ActionServlet class. But I want to get the reference to the dataSource
in
the DatabaseServlet class. Can anyone tell me how to get the reference
to
the dataSource from the databaseServlet class? Thanks.
Ying
-Original Message-
From: Vivek Bhaskaran [mailto:[EMAIL PROTECTED]]
Sent: Thursday, May 03, 2001 5:21 PM
To: [EMAIL PROTECTED]
Subject: Re: database connection
A reference to the DataSource is stored in the ServletContext object...
You
can get it from that.
- Original Message -
From: "Ying Teng" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, May 03, 2001 11:28 AM
Subject: RE: database connection
>
> What you described is true. Now my question is how to get the
datasource
> without referencing the actionServlet. I wanted to intialize the
database
> hashtable of the databaseServlet class in the databaseServlet init
function.
> In order to do that, I need to get the datasource. But I can not
reference
> the actionServlet because the action is initialized after the database
is
> initialized (as in the log file). Hope someone can give me some hints.
> Thanks.
>
> Ying
>
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, May 02, 2001 3:10 PM
> To: [EMAIL PROTECTED]
> Subject: RE: database connection
>
>
>
> You will add the key information to the datasource info in you
> struts-config.xml file it will look like this:
>
>key="[some name I'll use to reference this datasource]"
>autoCommit="false"
>description="Data Source Configuration"
>driverClass="org.gjt.mm.mysql.Driver"
>maxCount="4"
>minCount="2"
>password="pass"
>
> url
>
="jdbc:mysql://bethsoft.dev.zenimax.com:3306/test?user=user&password=pas
s
> "
>user="user"
> />
>
>
> Then, after that's done, the easiest way to access it is to reference
it
by
> the action servlet (servlet), because using actionServlet you can
just do
> servlet.findDataSource("the name you called your datasource") and
voila,
> you have your datasource object. From that datasource object you can
> create a connection.
> If you cannot access the actionServlet, then it's a little more
> difficult--and actually I wouldn't be able to help much there, but at
least
> your question would then be "how do I get the datasource without
> referencing the actionServlet"
>
> -Dallas
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
RE: Dynamic Error Messages
errors.add(ActionErrors.GLOBAL_ERROR, new
ActionError("view.construction.error", e.getMessage()));
in the application.properties you should have:
view.construction.error=Could not construct view because: {0}
e.getMessage() is substituted instead of {0}
-Original Message-
From: Darryl
To: [EMAIL PROTECTED]
Sent: 5/4/01 7:18 AM
Subject: Dynamic Error Messages
I can't figure out how to return dynamic error messages in the
ActionErrors collection. In other words, if an exception is thrown in an
Action object, I want to use the e.getMessage() to get the message
description and use that to populate an ActionError. The ActionError
class doesn't seem to have a constructor that supports this. Help!
- Darryl
RE: database connection
look at your web.xml file -
you should have two elements there one for DatabaseServlet and the
other for ActionServlet. each of them has a element.
set the load-on-startup element of the actionservlet to 1 and that of
databaseservlet to 2. to indicate that the database servlet should be loaded
first.
-Original Message-
From: Ying Teng
To: Gogineni, Pratima
Sent: 5/4/01 12:10 PM
Subject: RE: database connection
I tried that. The ServletContext object does not have that attribute. If
you
look at the servlet.log file, the system initializes the database first
and
then action, datasource. So I am wondering how to let the system
initializes
the datasourc first so in the databaseServlet class, we can have access
to
the datasource.
My idea is to enable the system to write the database info to the
database.xml file when the database is initialized.
Thanks.
-Original Message-
From: Gogineni, Pratima [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 04, 2001 3:00 PM
To: 'Ying Teng '; '[EMAIL PROTECTED] '
Subject: RE: database connection
in the databaseservlet class do: getServletContext().getAttribute(key);
-Original Message-
From: Ying Teng
To: [EMAIL PROTECTED]
Sent: 5/4/01 8:17 AM
Subject: RE: database connection
Yes, I can get the DataSource reference in the ServletContext object of
the
ActionServlet class. But I want to get the reference to the dataSource
in
the DatabaseServlet class. Can anyone tell me how to get the reference
to
the dataSource from the databaseServlet class? Thanks.
Ying
-Original Message-
From: Vivek Bhaskaran [mailto:[EMAIL PROTECTED]]
Sent: Thursday, May 03, 2001 5:21 PM
To: [EMAIL PROTECTED]
Subject: Re: database connection
A reference to the DataSource is stored in the ServletContext object...
You
can get it from that.
- Original Message -
From: "Ying Teng" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, May 03, 2001 11:28 AM
Subject: RE: database connection
>
> What you described is true. Now my question is how to get the
datasource
> without referencing the actionServlet. I wanted to intialize the
database
> hashtable of the databaseServlet class in the databaseServlet init
function.
> In order to do that, I need to get the datasource. But I can not
reference
> the actionServlet because the action is initialized after the database
is
> initialized (as in the log file). Hope someone can give me some hints.
> Thanks.
>
> Ying
>
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, May 02, 2001 3:10 PM
> To: [EMAIL PROTECTED]
> Subject: RE: database connection
>
>
>
> You will add the key information to the datasource info in you
> struts-config.xml file it will look like this:
>
>key="[some name I'll use to reference this datasource]"
>autoCommit="false"
>description="Data Source Configuration"
>driverClass="org.gjt.mm.mysql.Driver"
>maxCount="4"
>minCount="2"
>password="pass"
>
> url
>
="jdbc:mysql://bethsoft.dev.zenimax.com:3306/test?user=user&password=pas
s
> "
>user="user"
> />
>
>
> Then, after that's done, the easiest way to access it is to reference
it
by
> the action servlet (servlet), because using actionServlet you can
just do
> servlet.findDataSource("the name you called your datasource") and
voila,
> you have your datasource object. From that datasource object you can
> create a connection.
> If you cannot access the actionServlet, then it's a little more
> difficult--and actually I wouldn't be able to help much there, but at
least
> your question would then be "how do I get the datasource without
> referencing the actionServlet"
>
> -Dallas
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
RE: How can I get a data source from custom tag?
but you have a reference to the pagecontext in which the tag is called
you could try
(DataSource)pageContext.getAttribute("dsUsers",PageContext.APPLICATION_SCOPE
)
-Original Message-
From: Anna Hristova
To: Struts-User
Sent: 5/4/01 10:35 AM
Subject: How can I get a data source from custom tag?
Hi All,
I have different data sources defined in 'struts-config.xml'. I want to
use one of them from a custom tag.
I know how to this from an Action class:
DataSource ds = (DataSource) servlet.findDataSource("dsUsers");
But in the custom tag I don't have reference to the 'servlet' as in
Action class How can I get it?
Any help will be appreciated.
10x, Anna
Re: struts newbie trying to get onboard
Did you write a struts-config.xml? If so, post it here so we can take a look. If not, take a look at the struts-example application and the docs to see how to define the form-bean and action-mapping. Also, you need to point to the config file in the action servlet definition of your web.xml. Again, struts-example should show you what to do. Lastly, don't append the struts.jar to your classpath. For Tomcat, simply copy it to c:\tomcat\webapps\\WEB-INF\lib. Placing it anywhere else is asking for trouble. Hope this helps. -- Dan Miser http://www.distribucon.com >From: "Procek, Brett" <[EMAIL PROTECTED]> >Reply-To: [EMAIL PROTECTED] >To: <[EMAIL PROTECTED]> >Subject: struts newbie trying to get onboard >Date: Fri, 4 May 2001 11:56:29 -0500 >- >Root cause: >javax.servlet.jsp.JspException: Cannot find ActionMappings or >ActionFormBeans collection > at >org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:703) > at >org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:441) > at >_0002flogin_0002ejsplogin_jsp_1._jspService(_0002flogin_0002ejsplogin_js >p_1.java:71) > >- > >I'm sure my taglibs are set up correctly, and I do have the struts.jar >file appended to the classpath. _ Get your FREE download of MSN Explorer at http://explorer.msn.com
Re: How can I get a data source from custom tag?
This is now in the nightly build. Download it, and you should be able to do what you want. -- Dan Miser http://www.distribucon.com >From: "Anna Hristova" <[EMAIL PROTECTED]> >Reply-To: [EMAIL PROTECTED] >To: "Struts-User" <[EMAIL PROTECTED]> >Subject: How can I get a data source from custom tag? >Date: Fri, 4 May 2001 19:35:57 +0200 > >I have different data sources defined in 'struts-config.xml'. I want to use >one of them from a custom tag. >But in the custom tag I don't have reference to the 'servlet' as in Action >class How can I get it? _ Get your FREE download of MSN Explorer at http://explorer.msn.com
RE: struts newbie trying to get onboard
Is the struts ActionServlet configured and starting up OK? You should not be using struts-form.tld either, it's deprecated. If you are using Struts 0.5, don't, use the Struts 1.0 beta. > -Original Message- > From: Procek, Brett [mailto:[EMAIL PROTECTED]] > Sent: Friday, May 04, 2001 12:56 PM > To: [EMAIL PROTECTED] > Subject: struts newbie trying to get onboard > > > Hello all, this is my first posting. I'm trying to get onboard here > with one of those simple login > application I'm sure you've all seen. I've spent some time trying to > get this to work. > I went through all steps to install struts on my workstation > for Tomcat > 3.2.1 and verified them several times. I even have the struts-example > application working, so I've come a little ways already. > > I'm using the sample login.jsp that one can find almost > anywhere, but I > keep getting the same exception: > > - > Root cause: > javax.servlet.jsp.JspException: Cannot find ActionMappings or > ActionFormBeans collection > at > org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:703) > at > org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:441) > at > _0002flogin_0002ejsplogin_jsp_1._jspService(_0002flogin_0002ej > splogin_js > p_1.java:71) > > - > > I'm sure my taglibs are set up correctly, and I do have the struts.jar > file appended to the classpath. > Any help would be appreciated. > Thanks, > Brett > > > > Here is the login.jsp file: > > <%@ page language="java" %> > <%@ taglib uri="/WEB-INF/struts-form.tld" prefix="form" %> > > > > Username: > > Password: > > > > - > >
TEST (Please ignore it)
my first posting. -- majid kamal [EMAIL PROTECTED] - email (781) 685-1450 x2371 - voicemail/fax __ FREE voicemail, email, and fax...all in one place. Sign Up Now! http://www.onebox.com
RE: A Question about Transaction Tokens
The token is send as a hidden name=value pair in your html page. I believe a copy of the same value is stored in session object. When the user submits information back to the server, both these values are compared to make sure that they both match. If they both match, then the isTokenValid() returns true, else false . Hope this helps. cheers, Amar.. -Original Message-From: yogesh kapoor [mailto:[EMAIL PROTECTED]]Sent: Friday, May 04, 2001 1:11 PMTo: [EMAIL PROTECTED]Subject: A Question about Transaction Tokens Hi All, I have just installed the struts1.0 b1 and the struts-example app. I wonder how the transaction token key works.Can anybody explain that to me please(it is a great stuff). I checked out the code a bit and found out that struts is creating a transaction token key by convereting the session id and the current time to byte array and appending it to a message digest . So how can the two tokens(one set before displaying the form and another set when submitting?) be equated when they have a time element involved in them.Antoher thing i could not undsrstand was that while saving the form the code retrieves the token using the request.getParameter(token_key), but where are we setting this paramater? Can somebody explain , how are things working here? Regards, Yogesh Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
RE: Internationalised strings and scriptlets
I havent tried this but I am guessing you could get hold of the pagecontext
object and get a reference to the applicationresources from it - similar to
what you would do in a custom tag implementation.
-Original Message-
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: 5/3/01 1:45 AM
Subject: Internationalised strings and scriptlets
Is it possible to access internationalised messages from inside
scriptlets?
For example consider a dropdown list populated with text strings
produced by a
tag. I then want to do some processing based on a
user
selection:
<%
String selectedItem = request.getParameter( "dropDown" );
String internationalisedString = ???
if ( selectedItem.equals( internationalisedString ) )
{
// do something
}
%>
How do I get a value for internationalisedString?
Thanks,
Sam
--
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RE: basic forms/config question
This is one of the banes that I have been working with on WebLogic 5.1 sp8. I don't know if sp9 fixes it but what it means is one of the custom tags within your html:form tags is misconfigured, misspelled, missing a end tag or throwing an exception. To debug these I had to view the source of the Internal Server Error page. If I was lucky I could see some output to determine where in the JSP page I got the error. If you can't see any output when you view source I would successively add custom tags between the tags until you get the error. Good Luck, Abraham > -Original Message- > From: Jeremy Mann [mailto:[EMAIL PROTECTED]] > Sent: Friday, May 04, 2001 10:07 AM > To: [EMAIL PROTECTED] > Subject: basic forms/config question > > > > I have been trying to create a hello world with struts based on the login > example. I have to the best of my knowledge done everything correctly as > stated in examples and documentation. All I have is a simple page with a > form and 2 text fields in the form yet I still get the following error. > > "runtime error in custom tag 'form' " > > I have read through all the documentation and can't figure out what I am > doing wrong. Have you seen this? What is a good way to debug? > > Jeremy >
Re: A Question about Transaction Tokens
the html:form tag creates a hidden field where it stores the trandsaction token key from the session transaction token key. This key is compared back to the session transaction token key while saving form to database. >From: "yogesh kapoor" <[EMAIL PROTECTED]> >Reply-To: [EMAIL PROTECTED] >To: [EMAIL PROTECTED] >Subject: A Question about Transaction Tokens >Date: Fri, 04 May 2001 17:11:15 > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Hi All, I have just installed the struts1.0 b1 and the struts-example app. I wonder how the transaction token key works.Can anybody explain that to me please(it is a great stuff). I checked out the code a bit and found out that struts is creating a transaction token key by convereting the session id and the current time to byte array and appending it to a message digest . So how can the two tokens(one set before displaying the form and another set when submitting?) be equated when they have a time element involved in them.Antoher thing i could not undsrstand was that while saving the form the code retrieves the token using the request.getParameter(token_key), but where are we setting this paramater? Can somebody explain , how are things working here? Regards, YogeshGet Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
Re: struts newbie trying to get onboard
are your tld's in /WEB-INF/struts-form.tld or in /WEB-INF/TLDs/struts-form.tld? To: [EMAIL PROTECTED] cc: From: [EMAIL PROTECTED] Subject: struts newbie trying to get onboard Hello all, this is my first posting. I'm trying to get onboard here with one of those simple login application I'm sure you've all seen. I've spent some time trying to get this to work. I went through all steps to install struts on my workstation for Tomcat 3.2.1 and verified them several times. I even have the struts-example application working, so I've come a little ways already. I'm using the sample login.jsp that one can find almost anywhere, but I keep getting the same exception: - Root cause: javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection at org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:703) at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:441) at _0002flogin_0002ejsplogin_jsp_1._jspService(_0002flogin_0002ejsplogin_js p_1.java:71) - I'm sure my taglibs are set up correctly, and I do have the struts.jar file appended to the classpath. Any help would be appreciated. Thanks, Brett Here is the login.jsp file: <%@ page language="java" %> <%@ taglib uri="/WEB-INF/struts-form.tld" prefix="form" %> Username: Password: - www.lante.com Harnessing the power of the Internet
Re: struts newbie trying to get onboard
Don't include struts.jar in your classpath. Make sure that struts.jar is in your WEB-INF/lib directory. See http://www.husted.com/about/struts/threads.htm for an explanation. -Donnie Hall |+---> || procek@lucent| || .com | || | || 05/04/2001 | || 11:56 AM | || Please | || respond to | || struts-user | || | |+---> >| || | To: [EMAIL PROTECTED] | | cc: (bcc: Donnie Hall/Enron Communications) | | Subject: struts newbie trying to get onboard | >| Hello all, this is my first posting. I'm trying to get onboard here with one of those simple login application I'm sure you've all seen. I've spent some time trying to get this to work. I went through all steps to install struts on my workstation for Tomcat 3.2.1 and verified them several times. I even have the struts-example application working, so I've come a little ways already. I'm using the sample login.jsp that one can find almost anywhere, but I keep getting the same exception: - Root cause: javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection at org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:703) at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:441) at _0002flogin_0002ejsplogin_jsp_1._jspService(_0002flogin_0002ejsplogin_js p_1.java:71) - I'm sure my taglibs are set up correctly, and I do have the struts.jar file appended to the classpath. Any help would be appreciated. Thanks, Brett Here is the login.jsp file: <%@ page language="java" %> <%@ taglib uri="/WEB-INF/struts-form.tld" prefix="form" %> Username: Password: -
Re: NEED HELP
With the checkboxes only the checkboxes that are
checked will be sent to the http header. In other
words only checked checkboxes will have values from a
request.getParameter("") call.
To pass a value onto the next page you could either
store in a hidden field on the first page or pass it
on the query string.
scott.
--- [EMAIL PROTECTED] wrote:
>
> I have one jsp page that dynamically generated and
> looks like as below. I
> want to navigate to another jsp page when user
> selected 2 checkboxes and
> press submit button. How do I know which two check
> buttons are checked? and
> how I can pass customer number (key) and customer
> name to next page?
>
> Any good idea /help to accomplish this taks.
>
>
> Secondly on another jsp page I have three diffrent
> submit button ( <>
> <> and <> ) How do i can associate
> with these button with 3
> diffrent actions?
>
>
> T H A N K S I N A D V A N C E
>
> TAHIR
>
>
>
>
>
*---
> --*
> | SEL CUSTOMERCUSTOMER
> CUSTOMER |
> | NUMBER NAME
> ADDRESS |
>
>
*---
> --*
> [] A ROSE ANN
> TORONTO, CANADA
> [] A CRISTINA ANGHEL NEW
> YORK, USA
> [] A DAVED MILLER
> LONDON, UK
>
> *-*
> | SUBMIT |
> *-*
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
=
~~~
Scott
__
Do You Yahoo!?
Yahoo! Auctions - buy the things you want at great prices
http://auctions.yahoo.com/
RE: struts newbie trying to get onboard
You are correct, my ActionServlet is not starting up property. I looked
at the output and I listed some of it below.
For some odd reason Struts cannot resolve a certain DTD that it needs.
Please take a quick look.
Thanks for the help!
Brett
Starting tomcat. Check logs/tomcat.log for error messages
resolveEntity('-//Apache Software Foundation//DTD Struts Configuration
1.0//EN', 'http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd')
Not registered, use system identifier
Parse Fatal Error at line 5 column -1: External entity not found:
"http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd";.
org.xml.sax.SAXParseException: External entity not found:
"http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd";.
at com.sun.xml.parser.Parser.fatal(Parser.java:2817)
at
com.sun.xml.parser.Parser.externalParameterEntity(Parser.java:2506)
at com.sun.xml.parser.Parser.maybeDoctypeDecl(Parser.java:1137)
at com.sun.xml.parser.Parser.parseInternal(Parser.java:481)
at com.sun.xml.parser.Parser.parse(Parser.java:284)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:155)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:77)
at org.apache.struts.digester.Digester.parse(Digester.java:716)
at
org.apache.struts.action.ActionServlet.initMapping(ActionServlet.java:13
01)
at
org.apache.struts.action.ActionServlet.init(ActionServlet.java:465)
at javax.servlet.GenericServlet.init(GenericServlet.java:258)
at
org.apache.tomcat.core.ServletWrapper.doInit(ServletWrapper.java:317)
at org.apache.tomcat.core.Handler.init(Handler.java:215)
at
org.apache.tomcat.core.ServletWrapper.init(ServletWrapper.java:296)
at
org.apache.tomcat.context.LoadOnStartupInterceptor.contextInit(LoadOnSta
rtupInterceptor.java:130)
at
org.apache.tomcat.core.ContextManager.initContext(ContextManager.java:49
1)
at
org.apache.tomcat.core.ContextManager.init(ContextManager.java:453)
at org.apache.tomcat.startup.Tomcat.execute(Tomcat.java:195)
at org.apache.tomcat.startup.Tomcat.main(Tomcat.java:235)
cannot load servlet name: action
register('-//Apache Software Foundation//DTD Struts Configuration
1.0//EN',
'jar:file:/export/home/tomcat/webapps/TestApp/WEB-INF/lib/struts.jar!/or
g/apache/struts/resources/struts-config_1_0.dtd'
register('-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN',
'jar:file:/export/home/tomcat/webapps/TestApp/WEB-INF/lib/struts.jar!/or
g/apache/struts/resources/web-app_2_2.dtd'
register('-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN',
'jar:file:/export/home/tomcat/webapps/TestApp/WEB-INF/lib/struts.jar!/or
g/apache/struts/resources/web-app_2_3.dtd'
resolveEntity('-//Apache Software Foundation//DTD Struts Configuration
1.0//EN', 'http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd')
Resolving to alternate DTD
'jar:file:/export/home/tomcat/webapps/TestApp/WEB-INF/lib/struts.jar!/or
g/apache/struts/resources/struts-config_1_0.dtd'
New org.apache.struts.action.ActionMapping
---
-Original Message-
From: Deadman, Hal [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 04, 2001 2:31 PM
To: [EMAIL PROTECTED]
Subject: RE: struts newbie trying to get onboard
Is the struts ActionServlet configured and starting up OK? You should
not
be using struts-form.tld either, it's deprecated. If you are using
Struts
0.5, don't, use the Struts 1.0 beta.
> -Original Message-
> From: Procek, Brett [mailto:[EMAIL PROTECTED]]
> Sent: Friday, May 04, 2001 12:56 PM
> To: [EMAIL PROTECTED]
> Subject: struts newbie trying to get onboard
>
>
> Hello all, this is my first posting. I'm trying to get onboard here
> with one of those simple login
> application I'm sure you've all seen. I've spent some time trying to
> get this to work.
> I went through all steps to install struts on my workstation
> for Tomcat
> 3.2.1 and verified them several times. I even have the struts-example
> application working, so I've come a little ways already.
>
> I'm using the sample login.jsp that one can find almost
> anywhere, but I
> keep getting the same exception:
>
> -
> Root cause:
> javax.servlet.jsp.JspException: Cannot find ActionMappings or
> ActionFormBeans collection
> at
> org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:703)
> at
> org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:441)
> at
> _0002flogin_0002ejsplogin_jsp_1._jspService(_0002flogin_0002ej
> splogin_js
> p_1.java:71)
>
> -
>
> I'm sure my taglibs are set up correctly, and I do have the struts.jar
> file appended to the classpath.
> Any help would be appreciated.
> Thanks,
> Brett
>
>
>
> Here is the login.jsp file:
>
> <%@ page language="java" %>
> <%@ taglib uri="/WEB-INF/struts-form.tld" prefix="form" %>
>
>
>
> Username:
>
> Password:
>
>
>
> -
>
>
Re: struts newbie trying to get onboard
The sample application shows how to do a login. If you have that working, then you should be able to extract the needed code from there. If you go through the example you will see that there are several supporting classes for doing the login. One in paticular is the 'Constants.java' file which provides a way to store the session id in a key. There is also a 'login.jsp' file which needs to be linked to the 'LoginForm.java' bean. You link these files together in your 'struts-config.xml' file. Take a look there to see how the '/login' action is linked to the 'LoginAction' using the 'login.jsp' as the input. Hope this helps... On Fri, 04 May 2001, "Procek, Brett" wrote: > > Hello all, this is my first posting. I'm trying to get onboard here > with one of those simple login > application I'm sure you've all seen. I've spent some time trying to > get this to work. > I went through all steps to install struts on my workstation for Tomcat > 3.2.1 and verified them several times. I even have the struts-example > application working, so I've come a little ways already. > > I'm using the sample login.jsp that one can find almost anywhere, but I > keep getting the same exception: > > - > Root cause: > javax.servlet.jsp.JspException: Cannot find ActionMappings or > ActionFormBeans collection > at > org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:703) > at > org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:441) > at > _0002flogin_0002ejsplogin_jsp_1._jspService(_0002flogin_0002ejsplogin_js > p_1.java:71) > > - > > I'm sure my taglibs are set up correctly, and I do have the struts.jar > file appended to the classpath. > Any help would be appreciated. > Thanks, > Brett > > > > Here is the login.jsp file: > > <%@ page language="java" %> > <%@ taglib uri="/WEB-INF/struts-form.tld" prefix="form" %> > > > > Username: > > Password: > > > > - Thomas Peters Senior Software Engineer Aidera Solutions Cell: 603-566-5406 Voice Mail: 603-888-7700
RE: basic forms/config question
I tried that - In fact I tried a <% System.out.println("Hello") %> just
inside my tag and it's not getting there. This means that there
is a problem with the tag itself but I don't know what it is.
Jeremy
-Original Message-
From: Abraham Kang [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 04, 2001 4:00 PM
To: [EMAIL PROTECTED]
Subject:RE: basic forms/config question
This is one of the banes that I have been working with on WebLogic 5.1 sp8.
I don't know if sp9 fixes it but what it means is one of the custom tags
within your
html:form tags is misconfigured, misspelled, missing a end tag or throwing
an exception.
To debug these I had to view the source of the Internal Server Error page.
If I was
lucky I could see some output to determine where in the JSP page I got the
error. If you can't see any output when you view source I would
successively
add custom tags between the tags until you get the error.
Good Luck,
Abraham
> -Original Message-
> From: Jeremy Mann [mailto:[EMAIL PROTECTED]]
> Sent: Friday, May 04, 2001 10:07 AM
> To: [EMAIL PROTECTED]
> Subject: basic forms/config question
>
>
>
> I have been trying to create a hello world with struts based on the login
> example. I have to the best of my knowledge done everything correctly as
> stated in examples and documentation. All I have is a simple page with a
> form and 2 text fields in the form yet I still get the following error.
>
> "runtime error in custom tag 'form' "
>
> I have read through all the documentation and can't figure out what I am
> doing wrong. Have you seen this? What is a good way to debug?
>
> Jeremy
>
RE: basic forms/config question
One more thing
Here is my enter.jsp
<%@ page language="java" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<% System.out.println("This is a Test"); %>
<% System.out.println("Thats right a test"); %>
UserName
Password
and here is the snippet from strut-config.xml that applies to it
http://www.blackboard.com"/>
http://www.nytimes.com"/>
any ideas? Am I doing something inherently wrong?
Jeremy
-Original Message-
From: Abraham Kang [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 04, 2001 4:00 PM
To: [EMAIL PROTECTED]
Subject:RE: basic forms/config question
This is one of the banes that I have been working with on WebLogic 5.1 sp8.
I don't know if sp9 fixes it but what it means is one of the custom tags
within your
html:form tags is misconfigured, misspelled, missing a end tag or throwing
an exception.
To debug these I had to view the source of the Internal Server Error page.
If I was
lucky I could see some output to determine where in the JSP page I got the
error. If you can't see any output when you view source I would
successively
add custom tags between the tags until you get the error.
Good Luck,
Abraham
> -Original Message-
> From: Jeremy Mann [mailto:[EMAIL PROTECTED]]
> Sent: Friday, May 04, 2001 10:07 AM
> To: [EMAIL PROTECTED]
> Subject: basic forms/config question
>
>
>
> I have been trying to create a hello world with struts based on the login
> example. I have to the best of my knowledge done everything correctly as
> stated in examples and documentation. All I have is a simple page with a
> form and 2 text fields in the form yet I still get the following error.
>
> "runtime error in custom tag 'form' "
>
> I have read through all the documentation and can't figure out what I am
> doing wrong. Have you seen this? What is a good way to debug?
>
> Jeremy
>
RE: struts newbie trying to get onboard
Actually, I must include the struts.jar file in my classpath. However, this is done automatically in the tomcat.sh script. The script automatically includes all jar/zip files in the /lib directory. Should I remove this functionality? Brett -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Friday, May 04, 2001 3:19 PM To: [EMAIL PROTECTED] Subject: Re: struts newbie trying to get onboard Don't include struts.jar in your classpath. Make sure that struts.jar is in your WEB-INF/lib directory. See http://www.husted.com/about/struts/threads.htm for an explanation. -Donnie Hall |+---> || procek@lucent| || .com | || | || 05/04/2001 | || 11:56 AM | || Please | || respond to | || struts-user | || | |+---> >--- -| | | | To: [EMAIL PROTECTED] | | cc: (bcc: Donnie Hall/Enron Communications) | | Subject: struts newbie trying to get onboard | >--- -| Hello all, this is my first posting. I'm trying to get onboard here with one of those simple login application I'm sure you've all seen. I've spent some time trying to get this to work. I went through all steps to install struts on my workstation for Tomcat 3.2.1 and verified them several times. I even have the struts-example application working, so I've come a little ways already. I'm using the sample login.jsp that one can find almost anywhere, but I keep getting the same exception: - Root cause: javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection at org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:703) at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:441) at _0002flogin_0002ejsplogin_jsp_1._jspService(_0002flogin_0002ejsplogin_js p_1.java:71) - I'm sure my taglibs are set up correctly, and I do have the struts.jar file appended to the classpath. Any help would be appreciated. Thanks, Brett Here is the login.jsp file: <%@ page language="java" %> <%@ taglib uri="/WEB-INF/struts-form.tld" prefix="form" %> Username: Password: -
RE: struts newbie trying to get onboard
Ok, what I did was simply remove the reference to the DTD in the struts-config.xml file. Now, the ActionServlet does load up. However, I am getting one more problem: javax.servlet.jsp.JspException: Cannot retrieve mapping for action /login at org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:714) at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:441) at _0002flogin_0002ejsplogin_jsp_3._jspService(_0002flogin_0002ejsplogin_js p_3.java:71) The example I am coping is exactly the same. Here is my struts-config.xml file: I'm sure when I can get this to work it'll all be worth it. Thanks!! Brett
Re: Bean:message with args
> Is there a way to acheive the following :
> "/>
> without resorting to scriplets
I was looking for a way to do this a while back; currently
you have to resort to a scriptlet. I proposed and created an
implementation that allows you to do this:
The { } in argX parameters tell my modified bean:message tag
to use the bean introspection to insert the value of the
bean. If you're interested in the code, I'll be glad to
share it.
Stephen
- Original Message -
From: "Jon.Ridgway" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, May 04, 2001 10:36 AM
Subject: Bean:message with args
Hi all,
Is there a way to acheive the following :
"/>
without resorting to scriplets, ie :
would work but just doesn't sit right with me.
Any ideas.
Jon.
JDBC driver specific functionality/GenericConnections
Hello, I would like to access functionality specific to the MM MySql driver in an application that uses Struts' datasource pool and am having a bit of troubling casting a GenericConnection back to an org.gjt.mm.mysql.Connection. Casting from a GenericConnection to an org.gjt.mm.mysql.Connection results in a class cast exception; casting a Statement or PreparedStatement generated by the GenericConnection produces a null pointer exception. I am working with Struts 1.0-beta-1 and MM Mysql 2.0.4. If it sheds any light on the problem, the MM function I would like to access is PreparedStatement.getLastInsertID(). Has anyone successfully prosecuted this? On a tangential note--why is the getConnection() method in GenericConnection private? Were it public, I assume I could use it to get an MM Connection and execute MySql specific functions to my heart's content. Thanks is advance, David
ping - ignore me
sorry - just checking - i am having problems sending mail to the list
Bug? TC4beta3 + struts-session-bean -> cannot serialize ??? (long!)
Hi List :-) ! I changed from TC3.2.1 to TC4b3 and experienced a strange problem: after restarting a webapplication/the server I got the following Error: | HTTP Status 503 - This application is not currently | available | |The requested service (This application is not currently available) is not |currently available. So I searched the log-files -> and found the following test-cases: case A) with a data-source section in struts-config.xml === after calling startup.sh the log says 2001-05-05 01:13:52 action: init 2001-05-05 01:13:52 action: Loading application resources from resource org.apache.struts.example.Quis 2001-05-05 01:13:52 action: Initializing configuration from resource path /WEB-INF/struts-config.xml 2001-05-05 01:13:52 action: Initializing application data source org.apache.struts.action.DATA_SOURCE 2001-05-05 01:13:53 action: Process servletName=action, urlPattern=*.do 2001-05-05 01:13:53 action: Mapping for servlet 'action' = '*.do' [playing around and creating a session] after calling shutdown.sh the log says 2001-05-05 01:26:53 StandardHost[localhost]: standardHost.stop /quis 2001-05-05 01:26:53 Manager[/quis]: Cannot serialize session attribute itemForm for session B1F2D2E20324816389E27719D5B2E592 2001-05-05 01:26:53 action: Finalizing this controller servlet 2001-05-05 01:26:53 action: Finalizing application data source org.apache.struts.action.DATA_SOURCE 2001-05-05 01:26:53 ssi: destroy when i startup tomcat now and call my webapp I get the message mentioned above: | HTTP Status 503 - This application is not currently | available | |The requested service (This application is not currently available) is not |currently available. and the log says: 2001-05-05 01:28:38 StandardHost[localhost]: Installing web application at context path /quis from URL file:/usr/local/jakarta-tomcat-4.0-b3/webapps/quis 2001-05-05 01:28:38 Manager[/quis]: Seeding random number generator class java.security.SecureRandom 2001-05-05 01:28:38 Manager[/quis]: Seeding of random number generator has been completed 2001-05-05 01:28:38 StandardContext[/quis]: Exception loading sessions from persistent storage java.io.WriteAbortedException: Writing aborted by exception; java.io.NotSerializableException: AT.ac.akhwien.quis.ItemSelectAction at java.io.ObjectInputStream.readObject(ObjectInputStream.java:445) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236) at java.util.HashMap.readObject(HashMap.java:840) at java.lang.reflect.Method.invoke(Native Method) [deleted] 2001-05-05 01:28:38 StandardContext[/quis]: Context startup failed due to previous errors The webapplication only works again after deleting SESSIONS.ser in the folder $TOMCAT_HOME/work/localhost/quis/ case B) no data-source - section in struts-config.xml == after calling startup.sh the log says 2001-05-04 23:15:54 action: init 2001-05-04 23:15:54 action: Loading application resources from resource org.apache.struts.example.Quis 2001-05-04 23:15:54 action: Initializing configuration from resource path /WEB-INF/struts-config.xml 2001-05-04 23:15:54 action: Process servletName=action, urlPattern=*.do 2001-05-04 23:15:54 action: Mapping for servlet 'action' = '*.do' [playing around and creating a session] after calling shutdown.sh the log says 2001-05-04 23:20:30 StandardHost[localhost]: standardHost.stop /quis 2001-05-04 23:20:31 StandardContext[/quis]: Exception unloading sessions to persistent storage java.lang.NoClassDefFoundError: javax/sql/DataSource at java.lang.Class.getMethods0(Native Method) at java.lang.Class.getDeclaredMethods(Class.java:1039) at java.io.ObjectStreamClass.computeSerialVersionUID(ObjectStreamClass.java:873) [deleted] 2001-05-04 23:20:31 action: Finalizing this controller servlet why is there "java.lang.NoClassDefFoundError: javax/sql/DataSource" when there is no data-source section defined? So I asked myself: "Why do I get an error - and not the example?" There is no data-source section in struts-example - and there is no Error message when tomcat is finalizing struts-example! 2001-05-04 23:20:31 ssi: destroy 2001-05-04 23:20:31 StandardHost[localhost]: standardHost.stop /struts-example 2001-05-04 23:20:31 database: Finalizing database servlet 2001-05-04 23:20:31 database: Unloading database to '/usr/local/jakarta-tomcat-4.0-b3/bin/../webapps/struts-example/WEB-INF/data base.xml' 2001-05-04 23:20:31 action: Finalizing this controller servlet BUT: Changing the scopes in struts-config.xml from request to session [starting - playing - stopping] brings up this log: 2001-05-05 01:07:31 ssi: destroy 2001-05-05 01:07:31 StandardHost[localhost]: standardHost.stop /struts-example 2001-05-05 01:07:31 StandardContext[/struts-example]: Exception unloading sessions to persistent storage java.lang.NoClassDefFoundError: javax/sql/Data
