How to logout user session in from jsp?

Hi,

I've requirement where I need to log-out user from jsp at certain condition. I tried this:

javax.jcr.Session userSession  = resourceResolver.adaptTo(javax.jcr.Session.class);
System.out.println("User Id:"+userSession.getUserID());
userSession.logout();

I got the logged in user session, but logout() method didn't work for me. Please suggest me, Quick response would be appreciated..

Thanks