Hiiiiii friends please help me

I have a set of 20 web pages which should be under protected state. But checking the session attribute in every page is a big burden 2 me. Any one can help me in solving my problem. I ahv an idea that it can be reduced using Listeners in Session Tracking..
Waiting 4 ur reply
Mahidhar Chaluvadi

Create a custom jsp tag that does your
authentication. Put that tag at the top of all of
your pages. Implement the backend code to support
the authentication one time in one class, and you're
set.Custom tags aren't a good idea.
You can use basic security and a credential in session? Use a SessionListener to clean out the credential object when the session is closed or times out.
Or you can use an authentication filter that you can configure in the web.xml.
An even better solution would be Spring and aspect-oriented programming, but a filter will do.
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