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

Question

I'm trying to use JSTL, but I get the following error:

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

How is this caused and how can I solve it?

Answer 1

Use taglib definition in your JSP or better include it in every page by the first line.

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

There's also fix jstl-1.2 dependency in your project. Also use servlet specification at least 2.4 in your web.xml.

The maven dependencies are (maven is a open source development tool)

<dependency>   <groupId>jstl</groupId>   <artifactId>jstl</artifactId>   <version>1.2</version>   <scope>compile</scope> </dependency> <dependency>   <groupId>taglibs</groupId>   <artifactId>standard</artifactId>   <version>1.1.2</version>   <scope>compile</scope> </dependency> 

In the web.xml start writing

<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5"      xmlns="http://java.sun.com/xml/ns/javaee"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"      xsi:schemaLocation="http://java.sun.com/xml/ns/javaee      http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> 

EDIT:

I'd like to add a note that @informatik01 has mentioned in the comment about newer version of JSTL libraries available from Maven repository: JSTL version 1.2.1 API and JSTL 1.2.1 .

Answer 2

I had the same problem even after I added jar files for jstl and standard. For me, it resolved after I added a Targeted runtime for my project.

Go to Project Properties > Targeted Runtimes and select the server you are using (Tomcat 7.0 for me).