Yes, you need to add the implementation jars to your application
classpath. Which version you need to install will depend on your servlet
container.
L.
Eric Plante wrote:
Is there more to add than <%@ taglib uri="http://java.sun.com/jsp/jstl/core";
prefix="c" %>
in my jsp page?
Eric
Sounds like you didn't add JSTL to your application (that's why the JSTL
expression isn't being evaluated).
L.
Eric Plante wrote:
Hi,
Wendy, I tried:
<c:forEach items="${PandoraForm.motTreeMap}" var="mot" >
<c:out value="${mot.key}" />
</c:forEach>
That's a test to output every key in the Map which contain 10 items.
the tags are recognized but what's output is ${mot.key} once litteraly,
the
strings aren't recognized as data. I tried without the c:out but the
reszult
is the same.
So your form has two Maps that are keyed alike? I don't think you need
a
custom tag (or Struts tags) at all. This iterates over a treeMap and
uses
the key of each 'obj' as the key into a hashMap:
<c:forEach items="${treeMap}" var="obj" >
${hashMap[obj.key]}
</c:forEach>
That's with the Maps in request scope... if they're coming from the form
bean, it would be items="${formBeanName.treeMap}" (assuming there is a
getTreeMap method on your form bean.)
The above also assumes JSTL 1.1. If you're using JSTL 1.0 you'd need a
<c:out value="..." /> in the
middle rather than just the expression.
Here's the JSP I was using to play with this:
<%@ taglib uri="http://java.sun.com/jsp/jstl/core"; prefix="c" %>
<%
java.util.TreeMap treeMap = new java.util.TreeMap();
treeMap.put( "key1", "value1" );
treeMap.put( "key2", "value2" );
request.setAttribute( "treeMap", treeMap );
java.util.HashMap hashMap = new java.util.HashMap();
hashMap.put( "value1", "description1" );
hashMap.put( "value2", "description2" );
hashMap.put( "key1", "descByKey1" );
hashMap.put( "key2", "descByKey2" );
request.setAttribute( "hashMap", hashMap );
%>
<c:forEach items="${treeMap}" var="obj" >
${hashMap[obj.value]}
</c:forEach>
<hr/>
<c:forEach items="${treeMap}" var="obj" >
${hashMap[obj.key]}
</c:forEach>
If you need help adding JSTL to your webapp, just ask. (We need to know
what version of the Servlet specification you're working with-- Servlet
2.4
(Tomcat 5.x) or something else?)
HTH,
--
Wendy Smoak
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