I think you have to specify it in web.xml if you do not package your library in to its own jar file? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4021553#4021553 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4021553