security - How to properly logout of a Java EE 6 Web Application after logging in -


a pretty simple requirement. after logging web j2ee 6 application, how can have user logout again?

most (all?) books , tutorials have seen show how add login/loginerror page application , demonstrate use of security principals/roles/realms etc using "j_security_check" method - good. it's not clear how give user power logout. indeed, how can force logout after, say, session times out, etc?

you should have logout servlet/jsp invalidates session using following ways:

  • before servlet 3.0, using session.invalidate() method invalidates session also.
  • servlet 3.0 provides api method httpservletrequest.logout() invalidates security context , session still exists.

and, application ui should providing link invokes logout servlet/jsp

question: indeed, how can force logout after, say, session times out, etc?

answer: <session-timeout> in web.xml lets define timeout value after session invalidated server.


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