According to TLD or attribute directive in tag file, attribute value does not accept any expressions

According to TLD or attribute directive in tag file, attribute value does not accept any expressions

Keywords:
Compile JSP tomcat JSTL error "According to TLD or attribute directive in tag file, attribute value does not accept any expressions"

Problem:
Compile error from tomcat when it encounters a JSP: "According to TLD or attribute directive in tag file, attribute value does not accept any expressions"

Solution:
For some reason the JSP is using the 1.2 JSP (and 1.0 JSTL) and EL expressions aren't understood. There's a lot of hits on the web for this but in summary there are 2 important things to do to ensure you're getting the right version of the spec:

1. Reference the correct servlet specification in your deployment descriptor:

   <?xml version="1.0"?>
   <web-app 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">

2. Reference the correct JSTL uri in your JSP:
   change

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

   
   to

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

Notes:

What Specification goes with what?
Web-app(deployment schema)	2.3	2.4	2.5
	http://java.sun.com/dtd/web-app_2_3.dtd	http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd
Servlet	2.3	2.4	2.5
JSP	1.2	2.0	2.1
JSTL(core uri reference)	1.0	1.1	1.2
	http://java.sun.com/jstl/core	http://java.sun.com/jsp/jstl/core	http://java.sun.com/jsp/jstl/core
Tomcat	4.x	5.x	6.x
WebSphere	5.x	6.x	7.x (?)