session.invalidate() not working?

[Philippe Lamote]

Hi List,  I think I should have eaten much more Fortune Cookies this past Weekend, I have been getting way too many JSF probs today.  For starters, is this a MyFaces bug? (concerns session.invalidate() ) -- On the page I have:  <h:commandLink  action="#{portalbean.logout}" title="Logout"> <h:graphicImage url="../pics/login/btn_logo.gif" style="border:none;"> </h:graphicImage> </h:commandLink> -- In the backing bean, I have:   public String logout() {         FacesContext context = FacesContext.getCurrentInstance();     HttpSession session = (HttpSession) context.getExternalContext().getSession(false);     session.invalidate();     logger.error("Session has been cleared with necessary data ");     return "logout"; } --  & In faces-config to close the circle:   <navigation-rule>       <from-view-id>/WEB-INF/resources/pages/portal.jsp</from-view-id>              <navigation-case>          <from-outcome>logout</from-outcome>          <to-view-id>/WEB-INF/resources/pages/loginPage.jsp</to-view-id>          <redirect/>       </navigation-case> ...  I had expected this would bring the user back to the login page, yet what I get is this Exception: 2006-02-20 19:06:18,557 ERROR [org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/Mnemonica].[Faces Servlet]] - Servlet.service() for servlet Faces Servlet threw exception java.lang.IllegalStateException: Cannot create a session after the response has been committed at org.apache.catalina.connector.Request.doGetSession(Request.java:2206) at org.apache.catalina.connector.Request.getSession(Request.java:2024) at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:831) at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:842) at org.apache.myfaces.component.html.util.ExtensionsFilter.getFacesContext(ExtensionsFilter.java:185) at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:142) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) at java.lang.Thread.run(Thread.java:613) -------------------- I'll post the other 2 probs later. (I'll first finish the remaining cookies - perhaps it magically works when I come back at my desk then :-) Bye & thx for suggestions, Philippe