Hi Monsen, Thanks very much for your useful reply,my problem has been resolved now.I was using jakarta-tomcat-5.0.28 before,so I had to download the Tomcat 6 as you said and use it to deployed.I also changed the session time out to 2 minutes for quick confirmation.
I just see that after 2 minutes of being idle and trying to continue my work,it will log me out and display this 'The user session has expired. Please login again to access the application' which is nice.This is what I have been expecting,I do not need any further customization. I am alright with this,thanks very much for your support. Remain blessed.
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