What is this webapp built in?
I have the similar task. I need to integrate already build JSP application into JBoss portal.
Application: JSP (xslt+jstl) for view, WebModels framework as back end and OGNL Controller as a controller.
Can you give some hint's which way to go.
I don't know web models, but it sounds like writing a portlet bridge (or better finding one that already exists) would be your best bet. That would allow you to consume your app unchanged, similar to a JSF or struts app that works with the appropriate portlet bridge.