title: Redirect from login.jsp if already logged in
body: <p>If registered user jumps to <code>login.jsp</code> I wish to redirect him to <code>youAreLoggedIn.jsp</code>.
  Can this be made with <code>&lt;navigation-rule&gt;</code>? I know how to do this in PHP but not in JSP.
  When user visits <code>login.jsp</code> it must check if user is logged in this I know how to check. But  how to trigger this action? Should I make a new servlet or what?  </p>
  
  <p>Thanks!</p>