Session Handling in Jsf Example

JsfSession.java:

[java]
package com.ngdeveloper.com;

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 JsfSession implements PhaseListener {
@Override
public void afterPhase(PhaseEvent event) {
//Do anything
}

@Override
public void beforePhase(PhaseEvent event) {
FacesContext context = event.getFacesContext();
ExternalContext ext = context.getExternalContext();
HttpSession session = (HttpSession) ext.getSession(false);
boolean newSession = (session == null) || (session.isNew());
boolean postback = !ext.getRequestParameterMap().isEmpty();
boolean timedout = postback && newSession;
if (timedout) {
Application app = context.getApplication();
ViewHandler viewHandler = app.getViewHandler();
context.renderResponse();
try {
ext.redirect("/index.jsp");
context.responseComplete();
} catch (Throwable t) {
throw new FacesException("Session timeout, Login again to continue", t);
}
}
}
@Override
public PhaseId getPhaseId() {
return PhaseId.RESTORE_VIEW;
}
}
[/java]

Add the above created package to faces-config.xml file,

[xml]
<lifecycle>
<phase-listener>com.ngdeveloper.com.JsfSession</phase-listener>
</lifecycle>
[/xml]

And finally add the session timeout in web.xml file,

[xml]
<session-config>
<session-timeout>5</session-timeout>
</session-config>
[/xml]

Note: 5 means 5 minutes here.

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