Hi
I think I left out something with my last email. (I have my last email
appended to this email, so that people have a reference to it.)
My question is can we stop the session from going to null/timing out? If
the session times out, building a web site around session variables would
be very unstable. In this instance, it would be better to use cookies
instead. However it is difficult as not all web browsers are cookies enabled.
I also would like to hear people's opinion of this as well - sessions or
cookies? (At the moment, its cookies because session variables are unstable.)
-------------------------------- MY old email --------------------------------
Hi
I have a problem with using session object and cookies with jsps.
The problem is that I have set the session max inactive interval to 5 hours
(300 mins * 60 secs) and after a certain time - the shortest being 5 mins,
the session times out. When I access a session variable using people_id =
(String) session.getAttribute("people_id"); I get a nullpointerException.
Anyone here knows whats wrong. Here is a sniplet of my code.
in the login.jsp file
int sessionTime = 300*60; //300 mins session time
session = request.getSession(true);
session.setMaxInactiveInterval(sessionTime);
session.setAttribute((String) "group_id",group_id);
session.setAttribute((String) "role_id", role_id);
session.setAttribute((String) "accessTime", new Long(accessTime));
in other files
session = request.getSession();
String people_id = (String) session.getAttribute("people_id");
etc etc.
I have used the following function to detect whether the session is null or
not
if (session.getAttribute("people_id")!=null) {
}
else {
throw new Exception("no people access. ");
}
Sometimes this works and other times, a null pointer exception is raised,
eg the 'no people access' is raised. Is this a problem in Resin (I am using
Resin 1.2.5) ? Or a problem with my source?
Patrick
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