But in the two scenarios I described in my previous message, the session
does not exists, checking isNew() will only throw NullPointerException or
IllegalStateException.
On Sat, 11 Dec 2004 09:52:59 +0530, Rajamani M <rajamanim@(protected):
>Why Don't you use isNew() method for checking the new user?
>
>Regards
>RajamanI M
>
>-----Original Message-----
>From: A mailing list for discussion about Sun Microsystem's Java Servlet
>API Technology. [mailto:SERVLET-INTEREST@(protected)
>Li
>Sent: Saturday, December 11, 2004 3:03 AM
>To: SERVLET-INTEREST@(protected)
>Subject: Re: session timeout
>
>
>Thanks for the reply, Wei Cheng. Your solution works fine when the user's
>session has already been created. But if a user requests a secured web page
>immediately after his/her Web viewer is started, at that moment the user
>session has not been created yet, in this case, the authentication filter
>will capture the user's attempt and redirect the user to the timeout page,
>instead of the login page...
>
>On Fri, 10 Dec 2004 08:58:32 +0800, Wei Cheng <weicheng_yeo@(protected)>
>wrote:
>
>>Sessions have a lifespan of their own.
>>first prevent a new session from being created with
>>
>>HttpSession session = request.getSession(false);
>>
>>then you can check if the session exists . if it is null, it means the
>>session has timed out and had been destroyed .
>>You can then forward the page to somewhere else.
>>
>> if (session == null )
>> {
>> RequestDispatcher rd =
>>request.getRequestDispatcher("some_servlet");
>> rd.forward(request, response);
>> return;
>> }
>>
>>if you want the pages to automatically go somewhere when it times out, use
>>a javascript timer.
>>Best Regards,
>>Wei Cheng, Yeo
>>Software Engineer
>>--------------------------------------------------------------------------
-
>-----------------
>>Jebsen & Jessen Communications (S) Pte Ltd
>>
>>
>>
>>
>>
>>Ming <email2mingli@(protected)>
>>Sent by: "A mailing list for discussion about Sun Microsystem's Java
>>Servlet API Technology." <SERVLET-INTEREST@(protected)>
>>12/10/2004 05:53 AM
>>Please respond to "A mailing list for discussion about Sun Microsystem's
>>Java Servlet API Technology."
>>
>>
>> To: SERVLET-INTEREST@(protected)
>> cc:
>> Subject: session timeout
>>
>>
>>I have a Web site which has some contents require user login to access.
>>I'd
>>like to redirect the user to a page displaying "session timed out" message
>>when the user's login session expired and redirect the user to the login
>>page when a user tries to access secured content (let's say he booked mark
>>a URL of secured content when he logged in last time) before login. I
>>tryed
>>to do this by creating an object, putting it in a user's session when the
>>user has been authenticated and checking the object's existance in a
>>filter. But this doesn't work, as in either case the object doesn't exist
>>-
>>either the object has not been created since the user has not logged in,
>>or, the session timed out and the object is unbound from the session.
>>
>>Any suggestions?
>>
>>Thanks.
>>
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>
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