[JSTL] According to TLD or attribute directive in tag file, attribute items does not accept any expressions

Error Message: According to TLD or attribute directive in tag file, attribute items does not accept any expressions. When working on a J2EE (Java Enterprise Edition) web application with JSTL (JSP Standard Tag Library), this is a pretty common error.

Reason for this error is version incompatibility between JSP, Servlet and JSTL.

Matching versions are listed below.

• JSP 1.2 , Servlet 2.3 , JSTL 1.0
• JSP 2.0 , Servlet 2.4 , JSTL 1.1

Check the web.xml to see whether it uses the Servlet 2.3 DTD or Servlet 2.4 Schema.

If it uses Servlet 2.3 DTD, it will have the following text.

<!DOCTYPE web-app PUBLIC 
          "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" 
          "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
   
</web-app>

For Servlet 2.4 Schema, it will look like below.

<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">
    
</web-app>

When you change the versions correctly, no such errors will pop-up. Hope this will help you.

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