Eclipse “cannot find the tag library descriptor” for custom tags (not JSTL!)

Question

I have a Java EE project which build fine with Ant, deploys perfectly to JBoss, and runs without any trouble. This project includes a few custom tag librari

Answer 1

When I tried to include the JSTL Core Library in my JSP:

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

I got the following error in Eclipse (Indigo):

Can not find the tag library descriptor for "http://java.sun.com/jsp/jstl/core"

I went to the Project Properties -> Targeted Runtimes, and then checked the Server I was using (Geronimo 3.0). Most people would be using Tomcat. This solved my problem. Hope it helps!