Can not find the tag library descriptor for "http://richfaces.org/a4j"

Problem :

My jsp contains the following line:

<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j"%>

<%@ taglib uri="http://richfaces.org/rich" prefix="rich"%>

And Eclipse show the following error : Can not find the tag library descriptor for "http://richfaces.org/a4j"

Solution :

I add these dependencies for having jars in Eclipse Classpath :

<dependency>

<groupId>org.richfaces.framework</groupId>

<artifactId>richfaces-impl</artifactId>

<version>3.3.0.GA</version>

</dependency>

<dependency>

<groupId>org.richfaces.framework</groupId>

<artifactId>richfaces-impl-jsf2</artifactId>

<version>3.3.3.Final</version>

</dependency>

<dependency>

<groupId>org.richfaces.ui</groupId>

<artifactId>richfaces-ui</artifactId>

<version>3.3.3.Final</version>

</dependency>