JSP too large for Tomcat

A long JSP just worked in Tomcat 6.0.29. Somehow when we put it in 6.0.35, it got error "Unresolved compilation problem".

It seems that the new Jasper (/lib/ecj-3.7.jar) just not work for large JSP. One of the solution will be using the Jasper from 6.0.29 (/lib/jasper-jdt.jar) instead.

Or.. keep using the 6.0.29 for some while...

Using Expression Language (EL) in JSP

To use EL in JSP, a page directive has to be specified:

<%@ page isELIgnored="false" %>

Then you can use EL in the JSP, e.g.:

<logic:iterate id="var" name="sampleForm" property="list" indexId="index"> 
          <p>${var.id}</p>
          <logic:equal name="var"
                       property="foo"
                       value="${sampleForm.list[index+1].foo}">
             Value is same as next entry.
          </logic:equal>
</logic:iterate>

Getting Action Mapping in JSP

One can use "org.apache.struts.action.mapping.instance" to get the action mapping in JSP:

import org.apache.struts.config.ActionConfig;
ActionConfig mapping = (ActionConfig)request.getAttribute("org.apache.struts.action.mapping.instance");

Form name will be mapping.getName()