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Tomcat 5.0 JSTL 1.1 error when trying to loop over params

Posted on 2004-04-13

Java EE
JSP

1 solution

224 Views

Last Modified: 2013-11-24

I'm running Tomcat 5.0 using jstl 1.1 and have examples from oreilly under my webapps folder that don't have any problems with the following code. Also, what is the best way to handle complex forms in JSP using JSTL? Could someone please help.
When I attempt to do something like this:

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<c:forEach items="${param}" var="current">
      <c:out value="${current.key}" />
      <c:out value="${current.value}" />
</c:forEach>

I get this error:
-----------------------------------
exception

org.apache.jasper.JasperException
      org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:358)
      org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
      org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:856)

root cause

java.lang.NullPointerException
      org.apache.jsp.testCheck_jsp._jspService(testCheck_jsp.java:180)
      org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
      org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
      org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
      org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
----------------------------------------

Comment

Question by:trobutta

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6 Comments

LVL 27

Expert Comment

by:rrz

ID: 108234392004-04-14

Your code works for me.
I could not reproduce the error. Which version of java are you using ?
Are you sure that you have the 1.1 jars ?

LVL 1

Author Comment

by:trobutta

ID: 108277922004-04-14

currently using java 1.4.2

my WEB-INF/lib/ directory contains
jstl.jar and standard.jar that I got from the

webapps\jsp-examples\WEB-INF\lib directory that installed with tomcat

I just realized the code I posted doesn't run in their examples folder either.
Should I try to up date the jar files?

LVL 1

Author Comment

by:trobutta

ID: 108279032004-04-14

I got the freshest files from jakarta for jstl 1.1 and it still won't run for me.
The code does run under another folder that has an outdated jstl implementation..
but other things I'm doing don't run under that jstl implementation.

LVL 13

Expert Comment

by:copyPasteGhost

ID: 108285282004-04-14

are you getting the same error with the new version of jstl?
Ghost

LVL 27

Accepted Solution

by:rrz

rrz earned 125 total points

ID: 108288352004-04-14

Do you have the 2.4 header on your context's web.xml file ?

LVL 27

Expert Comment

by:rrz

ID: 109183882004-04-26

>java.lang.NullPointerException
org.apache.jsp.testCheck_jsp._jspService(testCheck_jsp.java:180)

Please show us line 180. Look in Tomcat's work folder. rrz

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