Java EE (Java Enterprise Edition) General Discussion

Hi All,

I want to redirect to a specific ".jsp" file page when the session is timed out in JSF.

I have tried to implement the same using PhaseListener

import javax.faces.FacesException;
import javax.faces.application.Application;
import javax.faces.application.ViewHandler;
import javax.faces.component.UIViewRoot;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.faces.event.PhaseEvent;
import javax.faces.event.PhaseId;
import javax.faces.event.PhaseListener;
import javax.servlet.http.HttpSession;

public class SessionTimeoutPhaseListener implements PhaseListener  {

	public void beforePhase(PhaseEvent event) {
		// Session detection code goes here
		System.out.println(event.getPhaseId());
		FacesContext facesCtx = event.getFacesContext();
		ExternalContext extCtx = facesCtx.getExternalContext();
		HttpSession session = (HttpSession) extCtx.getSession(false);

		boolean newSession = (session == null) || (session.isNew());
		boolean postback = !extCtx.getRequestParameterMap().isEmpty();
		boolean timedout = postback && newSession;
		if (timedout) {
			Application app = facesCtx.getApplication();
            ViewHandler viewHandler = app.getViewHandler();
            UIViewRoot view = viewHandler.createView(
                facesCtx,
                "sample.jsp");
            facesCtx.setViewRoot(view);
            facesCtx.renderResponse();
            try {
                viewHandler.renderView(facesCtx, view);
                facesCtx.responseComplete();
            } catch(Throwable t) {
                throw new FacesException(
                    "Session timed out", t);
            }
		}
	}

	public void afterPhase(PhaseEvent event) {
		// Do nothing
	}

	public PhaseId getPhaseId() {
		return PhaseId.ANY_PHASE;
	}
}   

and I added the following lines in my faces-cofig.xml

	<lifecycle>
		<phase-listener>
			SessionTimeoutPhaseListener
		</phase-listener>
	</lifecycle>

But Its not working. Whenever session expires i am getting the following exception in my screen.

javax.faces.application.ViewExpiredException: viewId:/welcome.jsf - View /welcome.jsf could not be restored.
	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:312)
	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
	at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
	at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
	at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
	at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:27)
	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:43)
	at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:247)

Have i did anything wrongly in the above mentioned code? Is there any other simple way to handle this situation.

Thanks in Advance,
Antany