GXT: How to bring the login page when session expires

Question

I am developing a web application using GXT, Hibernate, mysql etc. There is a login page for the application. Actually I am getting problem to set the login page when the session expires. We can set the timeout in the web.xml file but in that case we can't redirect to login page.Can you tell me how to achieve that.

Answer 1

You can not do a server side redirect because the application is entirely AJAX. What you can do is use the GWT Timer class and for every one of your RPC calls check/reset the timer. If the "session" expires then you do a redirect to the login page via a History token. This was the easiest way for me

Some other reading:

http://groups.google.com/group/Google-Web-Toolkit/browse_thread/thread/b9eab8daaa993c83/d0192d356045e061?pli=1

http://gwt-ext.com/forum/viewtopic.php?f=9&t=1682

Answer 2

I have used the concept of throwing an exception in the server side when the session expires and then tried to catch the exception in the client side. I don't know whether there is any better way to do that.