JSP output a variable

[Martin Thorpe]

Hello I am totally new to JSP and am running through a good tutorial that I have found applying.

I can get it all to work apart from outputting a variable using JSTL/jsp 2.. not sure what part it is that is not working:

I am outputting this:
<c:out value="${emp.name}"/>

but all that is displayed to the screen is ${emp.name}

I have the tag lib correctly at the top:
<%@ taglib prefix="c" uri="/tags/core" %>

and this is specified in my web.xml as
<taglib>
<taglib-uri>/tags/core</taglib-uri>
<taglib-location>/WEB-INF/c.tld</taglib-location>
</taglib>

I get no errors just no display.
This is all from following this tutorial:
http://www.learntechnology.net/struts-lesson-1.do

I am running J-Boss 4.0.4 on a windows machine.

Any help or hints would be gratefully appreciated.

cheers
Martin
[ June 21, 2006: Message edited by: Bear Bibeault ]

[Bear Bibeault]

Firstly, you've over-complcated things by extracting the tld from the jar file. You shoud be able to just dump the jar file into the lib folder and use the correct JSTL URI. No tld delarations in the web.xml should be necessary.

Secondly, it sounds as if your web.xml itself is not delcared correctly as a 2.4 web app. See the JSP FAQ for details.

[Martin Thorpe]

Hello.

Thank you for your reply.

I have gone to the java FAQ and added this to the top of my web.xml
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xls="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">

I removed the doctype declaration from the web.xml as described.

But when I start the JBoss server and it tries to deploy my application I get a number of errors, related to the declaration, such as:

org.xml.SAXParseException: The prefix "xsi" for attribute "xsi:schemaLocation" associated with element "web-app" is not bound.
at org.apache.xerces.parsers.DOMparser.parse (Unknown source)
at org.apache.xerces.jaxp.DocumentBuilderImpl.parse (Unknown source)
at org.jboss.metadata.XMLFileLoader.getDocument(XMLFileLoader.java:328)

Again thanks for your reply.

cheers
Martin

[Bear Bibeault]

What version of Tomcat are you using with JBoss? It must be Tomcat 5 for all this to woek.

[Will Fleming]

jBoss 4.0.4 has Tomcat 5.5.
[ June 21, 2006: Message edited by: Will Fleming ]

[Bear Bibeault]

Hmmm, perhaps you should post your web.xml. Be sure to enclose it in UBB code tags to preserve the formatting.

[Martin Thorpe]

Thanks for your help but I got to the root of the problem in the end, there was something wrong in my declaration after copy pasting it it worked fine.

Thanks for your time

cheers
Martin