Problem in using request parameters in jstl xml code

Question

hi,
my need is to get a request parameter and use the variable in jstl(xml) select conditions.
my code is ,
<%String txname=request.getParameter("tname");%>
<x:forEach var="fe" select="$doc/transaction/tx[@tname=${txname}]/field">
     <field>ss <x:out select="$fe/@fname"/> </field>
</x:forEach>
i'm using tomcat5.0. I deployed the jstl.jar, standard.jar, jaxen.jar and saxpath.jar in WEB-INF/lib directory.
I able to run other jstl(xml) files which doesn't need any variables from out side.
i used the scirpt for getparameter as i unable to get the code ${param.tname}
help me.
urs
pavan.

Answer 1

Looks like you haven't imported the taglib:
JSTL1.0: <%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
JSTL1.1: <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
You use JSTL1.0 in JSP1.2 containers (eg Tomcat 4)
You use JSTL1.1 in JSP2.0 containers (eg Tomcat 5)
also check this post if you have further troubles. It has basic troubleshooting for JSTL.