EL expressions are not evaluated in JBoss AS 4.2.2

Question

EL expressions are not evaluated in JBoss AS 4.2.2. I have web.xml declared conform the Servlet 2.4 spec.

<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

What needs to be done more in order to get EL to work in JBoss AS 4.2.2?

Weeden

Answer 1

Your web.xml root declaration looks fine.

Other causes to exclude:

• Ensure that you don't have Servlet/JSP/EL libraries of a different servletcontainer make/version in your webapp's /WEB-INF/lib like servlet-api.jar, jsp-api.jar, el-api.jar, etc. More than often starters drop a copy of those files from unknown resource in there to overcome compilation problems, but that's the wrong approach!

• Ensure that you don't have <%@page isELIgnored="true" %> in your JSPs.

• Ensure that you don't have the following in your web.xml:

  <jsp-config>
      <el-ignored>true</el-ignored>
  <jsp-config>
  

Harvin

Answer 2

Add

<%@page isELIgnored="false" %> 

in your JSP.

I had a similar issue with Tomcat 6. Even though EL was not disabled globally (thru web.xml). I had to individually enable EL in my JSPs thru the above statement.

Mansized

This by the way implies that the Tomcat of the host where you deployed the webapp to has a <el-ignored>true</el-ignored> in its /conf/web.xml. – Harvin