30 minutes i believe according to the api, but it may differ from server to
server..
>From: Dennis Huang <[EMAIL PROTECTED]>
>Reply-To: Dennis Huang <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Re: problem with sessions and jsp
>Date: Fri, 3 Mar 2000 12:02:40 +1100
>
>Does anybody know what is lifetime for the session object? In ASP, by
>default it's 20 minutes. How much is it in JSP?
>
>Thanks,
>
>Dennis
>
>-----Original Message-----
>From: Bradley McLain [mailto:[EMAIL PROTECTED]]
>Sent: Monday, February 28, 2000 7:42 AM
>To: [EMAIL PROTECTED]
>Subject: problem with sessions and jsp
>
>
>i am creating a web app that uses a servlet to login and then passes the
>user along to an initial jsp and several sub-jsps below that. once i
>authenticate the user in the servlet i store their info (userid, logintime)
>in the session object because i want to display that on all the subsequent
>jsps.
>
>After placing the info in the session object and redirecting to the first
>jsp i am able to extract and display that information 100% of the time.
>
>my problem is this: any calls to subsequent jsps may or may not be able to
>extract the info. about 30% of the time when i try to display the info my
>variables are null. in other words, the information is no longer there.
>here is the code i'm using on each page. it comes before the </head> tag:
>
>String foo
>...
>foo = (String) session.getValue("userName"); //get the value
>...
>session.putValue("userName", foo); //place back in the session for next
>page
>...
>
>as i said before, this works about 60-70% of the time, and the subsquent
>page will successfully extract 'userName' and assign it to 'foo'. but
>other
>times the value isn't there and foo is null, throwing a
>nullpointerexception
>when i try to put it back into the session.
>
>am i doing something completely wrong here? am i leaving something out?
>any
>help would be very welcome.
>
>bradley
>
>
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>
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Some relevant FAQs on JSP/Servlets can be found at:
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http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
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