We're running JBoss Portal 2.4.0 on AS 4.0.4GA on Enterprise Linux 4 ES. I am following the Portlet Primer tutorial (Roy Russo) that came with the download. I downloaded the HelloWorldJSPPorlet.zip, built the WAR and deployed. I'm getting this error:
org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/portlet cannot be resolved in either web.xml or the jar files deployed with this application.