You are not guaranteed to have a valid session at this point of your code. It depends on how you retrieved the session variable. If you called request.getSession() or request.getSession(true), then a session will be created for you if the request does not have a valid session. If you call request.getSession(false), a session will not be created. In this latter case, session will equal null.
-----Original Message----- From: Frank W. Zammetti [mailto:[EMAIL PROTECTED] Sent: Monday, November 08, 2004 3:49 PM To: Struts Users Mailing List Subject: Re: Session invalidation problem Another good point, and I'll add code to catch that. But, as I understand it, session would never be null (not at this point in the code anyway, which is inside an Action) because a session would have been established by now anyway. Also, the exception wasn't in this section of code anyway, it actually happens about 20 lines after this. I'm going to take your suggestion anyway because I like adding checks that don't hurt anything, might save me a headache down the road, but I don't think this will address my initial problem. Thanks Luiz! -- Frank W. Zammetti Founder and Chief Software Architect Omnytex Technologies http://www.omnytex.com Luiz Esmiralha wrote: > On Mon, 8 Nov 2004 11:52:14 -0800 (PST), [EMAIL PROTECTED] > <[EMAIL PROTECTED]> wrote: > >>if (session == null || session.getAttribute("sessionAlive") == null) { >> request.setAttribute("message", "Your session timed out. Please log on again."); >> session.invalidate(); >> return mapping.findForward("reload"); >>} > > > Calling session.invalidate() will throw a NullPointerException if > session == null. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
