Logout Code!!!

[Subho]

Hi ,

CAn anybody tell me how to write a logout code in Struts 2? Also how
to handle the browser back button in Struts 2.

Any help is appreciated.

Regards,
Subhash

 

[Arne Vajhøj]

CAn anybody tell me how to write a logout code in Struts 2? Also how
to handle the browser back button in Struts 2.

If you manage login status in app, then only you knows
how to logout.

If you let the container manage login status, then just use:
session.invalidate();

Arne

 

[Lew]

CAn anybody tell me how ...
to handle the browser back button in Struts 2.

Use a synchronization token.

<http://www.corej2eepatterns.com/Design/PresoDesign.htm>
"Synchronizer (or Déjà vu) Token"

<http://www.mnot.net/blog/2003/09/13/click_submit_only_once>
<http://www.javaworld.com/javaworld/javatips/jw-javatip136.html>
<http://www.eaipatterns.com/IdempotentReceiver.html>
<http://mindprod.com/jgloss/idempotent.html>

An interesting variation on this is to put the token in the session when a
page is first displayed, and remove it from the session when the first
"submit" arrives from that page. If that page returns a token and there is no
token in the session, it's a replay. This enforces idempotence.

Under no circumstances may you override the client-side behavior of the back
button. Client actions are not for the server to control.

Under no circumstances may you override the client-side behavior of the back
button. Client actions are not for the server to control.

What you can do is prevent retrace or resubmission on the client side from
adversely affecting server-side state.

Under no circumstances may you override the client-side behavior of the back
button. Client actions are not for the server to control.