ClassCastException from JBoss AS Tomcat ApplicationDispatcher when forwarding with portal provided DispatchedHttpServletRequest ------------------------------------------------------------------------------------------------------------------------------- Key: JBPORTAL-727 URL: http://jira.jboss.com/jira/browse/JBPORTAL-727 Project: JBoss Portal Issue Type: Bug Security Level: Public(Everyone can see) Components: Portal Core Affects Versions: 2.2 Final Environment: JBoss Portal 4.0.3SP1 MyFaces Reporter: Tuomas Kiviaho The portal.xml for reproducing the problem <portlet-class>org.apache.myfaces.portlet.MyFacesGenericPortlet</portlet-class> <init-param> <name>default-view</name> <value>/myservlet</value> </init-param> MyServlet service method req.getRequestDispatcher("/myjsp.jsp").forward(req, resp); The request seen below that is given to the servlet causes following exception. java.lang.ClassCastException: org.jboss.portal.portlet.impl.DispatchedHttpServletRequest at org.apache.catalina.core.ApplicationDispatcher.unwrapRequest(ApplicationDispatcher.java:814) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:401) The problem most propably relies either in Tomcat ApplicationDispatcher forwarding mechanism since inclusion works ok, but both request and servletcontext based dispachings using forward fail. Couple of notes from Tomcat ApplicationDispatcher - doubled request unwrapping when forwarding maybe due to tomcat bug fix number 30949 - wrapped request not discarded after unwrapping These may be the real causes but this class mentions to function properly as long as request extends the standard wrapper. This is not the case with DispatchedHttpServletRequest.