jstl core tag library

[boanator]

I am having trouble using the jstl core tag library. I have used this
library before, but for some reason, it is not working now. I have
downloaded the tag library c.tld. I have placed it in my WEB-INF
directory, but I can not access it.

I can use all of the other tag libraries for struts without a problem.
It's just the c.tld that is giving me the problem.

I can not figure out what the problem is. Could it be the version of
Tomcat I am using? I am using the latest Tomcat 5.5. I cannot figure
this out, and I cannot find any recent posts on this topic.

The following is my web.xml file:
<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
...
<taglib>
<taglib-uri>/jstl/c</taglib-uri>
<taglib-location>/WEB-INF/c.tld</taglib-location>
</taglib>
</web-app>

I try to include this tag library with the following line in my JSP
page:
<%@ taglib prefix="c" uri="/jstl/c" %>

Tomcat starts up just fine, but when I try to hit the page I get the
following exception:
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.ClassNotFoundException:
org.apache.taglibs.standard.tlv.JstlCoreTLV
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1332)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1181)
at
org.apache.jasper.compiler.TagLibraryInfoImpl.createValidator(TagLibraryInfoImpl.java:649)
at
org.apache.jasper.compiler.TagLibraryInfoImpl.parseTLD(TagLibraryInfoImpl.java:246)
at
org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:162)
at
org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:418)
at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:483)
at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1543)
at org.apache.jasper.compiler.Parser.parse(Parser.java:126)
at
org.apache.jasper.compiler.ParserController.doParse(ParserController.java:211)
at
org.apache.jasper.compiler.ParserController.parse(ParserController.java:100)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:146)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:286)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
at
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:293)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:574)
at
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:499)
at
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
at
org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:604)
at
org.apache.struts.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:99)
at org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:135)
at
org.apache.struts.taglib.tiles.InsertTag.doInclude(InsertTag.java:760)
at
org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.java:892)
at
org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:462)
....

 

[boanator]

I have also tried using the url:
http://java.sun.com/jsp/jstl/core

as the location for the tag library, but I still get the same problem.

 

[boanator]

When I use http://java.sun.com/jsp/jstl/core, I get the following
exception:

org.apache.jasper.JasperException: The absolute uri:
http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml
or the jar files deployed with this application

is there a jar file I need to include to use the jstl core tag library?

 

[boanator]

there is a jar file that I need to include:
jstl-standard.jar

Sorry about this post. Apparently I just like to talk to myself. Or I
just like to hear myself type????

Please ignore this post. I will not post anything else untill I am
sure that I cannot figure the problem out myself.

 

[Roedy Green]

java.lang.ClassNotFoundException:
org.apache.taglibs.standard.tlv.JstlCoreTLV

When push comes to shove that file has to be somewhere on the
classpath.

So either the classpath is wrong, or that class is not on the
classpath. See http://mindprod.com/applets/wassup.html for how to
sniff the system properties including the classpath.


Wearing my Swami hat, the problem is you reinstalled or deleted a
JRE/JDK without remembering refresh the ext dir. You need a bat file
like this to help you keep them up to snuff.

If none of that helps, see http://mindprod.com/

 

[Roedy Green]

On Tue, 20 Sep 2005 00:14:31 GMT, Roedy Green

I meant to say, if none of that helps, see
http://mindprod.com/jgloss/runerrormessages.html#NOCLASSDEFFOUNDERROR

oops Ctrl-W strikes again. It is right next to Ctrl-V and in Agent it
means SEND.

 

[Roedy Green]

there is a jar file that I need to include:
jstl-standard.jar

To answer that question, you just look inside various jars for the
class file. You can use Funduc search and replace to help.

NoClassDefFound errors are the hardest to track down of any error in
Java. I have written long entry on how to do it. I beefed it up yet
again today.


see
http://mindprod.com/jgloss/runerrormessages.html#NOCLASSDEFFOUNDERROR