You know, I've had Eclipse installed across several computers, and I'm not
sure which versions run what, but I've had JSP work on about half of them.
I've never looked too much into the cause. Do you have WTP installed? I want
to say this should solve your issue, except I am fairly certain it works on
only one of my Eclipse instances. On another note, I've always been pretty
happy working with JSPs in IntelliJ IDEA and Netbeans. It's only been
Eclipse that has issues.

On Sun, Aug 8, 2010 at 2:28 AM, Lou <[email protected]> wrote:

> Hello,
>
> I've got the following in my jsp in eclipse:
>
> <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
>    pageEncoding="ISO-8859-1" isELIgnored="false" %>
> <%@ taglib uri="http://java.sun.com/jstl/core_rt";  prefix="c" %>
>
> All the code like <c:out in eclipse works, but
> http://java.sun.com/jstl/core_rt
> is underlined red, and eclipse says "can not find the tag library
> descriptor for http://java.sun.com/jstl/core_rt";.
>
> I also don't get any code completion in eclipse, which I suspect is
> because of this.
>
> Does someone know how to make the errors go away? I'm also not sure
> about the http://java.sun.com/jstl/core_rt url as well, as I've seen
> some slightly different urls floating around on the internet.
>
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-- 
Ikai Lan
Developer Programs Engineer, Google App Engine
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