Tapestry5 Logout exception

I am facing a strange issue and am not able to find out the root cause. Here is the problem statement.

I have one tapestry page with a logout button. When I click on the logout button, the code below is executed and I get the exception.

// method which called onclick of logout button. 
@OnEvent(value = EventConstants.ACTION, component = "tlogout")
public Object logout()
{
    request.getSession(false).invalidate();
    return "Login";
}

Exception is:

INFO  | net.awl.tapestry5.kawwa.services.KawwaModule.TabLocator | 2011-01-05 14:33:23,321
   > Checking for any UPDATES

INFO  | net.awl.bfi.websuite.services.AppModule.TimingFilter | 2011-01-05 14:33:23,352
   > Request time: 31 ms

ERROR | org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/WebSuiteMoreaTapestry].[default] | 2011-01-05 14:33:23,352
   > Servlet.service() for servlet default threw exception

java.lang.IllegalStateException: Cannot create a session after the response has been committed
    at org.apache.catalina.connector.Request.doGetSession(Request.java:2221)
    at org.apache.catalina.connector.Request.getSession(Request.java:2031)
    at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:832)
    at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:843)
    at net.atos.xa.rm.jaas.openejb.web.RMOpenEJBFilter.doFilter(RMOpenEJBFilter.java:89)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
    at org.apache.openejb.tomcat.catalina.OpenEJBValve.invoke(OpenEJBValve.java:45)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
  开发者_如何学编程  at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
    at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
    at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
    at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
    at java.lang.Thread.run(Thread.java:595)

Guys any idea? Regards,

Mahendra

---

Thanks for your time and your comments! With some good discussion I finally found the solution and are sharing it with you.

In my case request/response coming through RMOpenEJBFilter. So, when I invalidated the session in my code then it crashed in RMOpenEJBFilter because its internal code process on session.

So here is my solution.

1. I created one Filter named as LogOutFilter.
2. in WEB.XML I put it before RMOpenEJBFilter (for the purpose of Filter Chaining).
3. in my logout code i am setting one variable in session

request.getSession(false).setAttribute("InvalidateSession", true);

1. so when I click on the logout button it sets the session attribute, then goes to the RMOpenEJBFilter where it process the request (till the time session is not invalidated). Now control goes to the LogOutFilter where I made a check to invalidate the session.

if (httpRequest.getSession(false) != null && httpRequest.getSession(false).getAttribute("InvalidateSession") != null) { httpRequest.getSession(false).invalidate(); }

And now it's working fine.

Hope my solution is good enough to be accepted.

Feel free to contact me for any clarification.

Regards,
Mahendra Athneria
Mumbai, India

---

i think u don't need filter. just add following action for logout.

@OnEvent("Logout")
    private Object onActionFromLogout() {
        Session session = requestGlobals.getRequest().getSession(false);
        if (session != null) {
            session.invalidate();
        }

        return Login.class;
    }