Many applications that time out give a 1 minute window before logging out.
So if you get the session time from the servlet config, you would write out
some javascript to the client and use a setTimeout like so:
<script language="javascript">
function confirmLogoff() {
if (confirm("Your session will end in one minute.\n\nPress OK to
continue for another ten minutes.")){
location.reload();
}
}
setTimeout("confirmLogoff()", sessionTimeout);
</script>
Where sessionTimeout is 1000 milliseconds + number of milliseconds left in
your session.
So the last line could read:
setTimeout("confirmLogoff()", <%= sessionTimeout %>); and render it to every
JSP that gets sent to the client. The key is knowing ahead of time what
your sessionTimeout is in milliseconds.
Jeffrey Anderson
Systems Programmer
Center For Teaching And Learning
Mesa Community College -- 480-461-7709
[EMAIL PROTECTED]
-----Original Message-----
From: Anne-Li Mell [mailto:[EMAIL PROTECTED]
Sent: Friday, November 19, 2004 7:19 AM
To: JRun-Talk
Subject: SV: Is it possible to see session timeout in the servlet?
Oh, just to explain; this isn't exactly what I wrote in my last mail; I
wrote of warning prior to logging out then; that is part of it too - that my
boss wants instead of logging out give warning and only after a bit longer,
then log out. :) Sorry, forgot it below because I'm in such a hurry. Now I
really must run. :D
All the best,
Anne-Li
-----Ursprungligt meddelande-----
Fran: Anne-Li Mell [mailto:[EMAIL PROTECTED]
Skickat: den 19 november 2004 15:16
Till: JRun-Talk
Amne: SV: Is it possible to see session timeout in the servlet?
>If you do a few web searches you should come up with something you want...
I tried. Though, granted, English is not my native language and maybe I'm
searching for the wrong words ... :) Thanks for helping me!
However, the page you sent didn't help me. I know of the HttpListeners and
such, but as far as I understand them they can't help me. I think I might
not have explained everything well enough in my last mail, sorry!
I'm not very good at explaining and I have to leave *very soon*, but I'll
try again and forgive me if this is a bit short or garbled ... :/ I need
some information that is in the session, but not when the session *itself*
dies (when the httplistener would get notified of the session dying), but
when the user tries to do something else (later on) and by doing so will be
made aware of that (s)he was logged out. For instance my program has several
languages and several ways of being logged in. I have this information in
the session, but it disappears when the session dies. However, I want to
keep this information for when the user tries to do something new so that
(s)he will keep her language and name and such. I have before saved this as
hidden inputs on the html-pages, but now the information is getting to be
too much and it isn't working for me.
What I want is to do the logging out myself (so that I have all the
information still in the session), but still log out the user if there has
been no action within the time that normally would have gotten them logged
out automatically by the session dying and there not being an old session
for them when they try to do something new. This I hope to be able to do by
keeping the session constantly alive by letting a small html-page (ticker)
post itself at regular intervals (that necessarily must be shorter than the
set logouttime of the JRun session (or else the session might die in the
meanwhile ...)). When the user actually does something "real" I will save
the timestamp of when (s)he did it. Then when the ticker post itself I will
check if too long time has passed since the user did anything "for real"
and, if so, log out the person, but with the right information regarding
languages/names/way of being logged in as to give the proper information in
the right way to the user. But to do this I need to know the length of the
session so that the ticker can tick maybe twice in that time or something.
:)
All the best,
Anne-Li
http://livedocs.macromedia.com/jrun/4/Programmers_Guide/servletlifecycleeven
ts4.htm
Took me 3 minutes after a google search and it came up.
Sorry if it's not directly answering your question. I think what you are
looking for is a result of using the HttpSession object. Search the
docs...I'm sure it's in there somewhere.
-----Original Message-----
From: Anne-Li Mell [mailto:[EMAIL PROTECTED]
Sent: Friday, November 19, 2004 2:22 AM
To: JRun-Talk
Subject: Is it possible to see session timeout in the servlet?
I've tried to look around, but I just can't find this. Can I somehow inside
the servlet see how long time has been set to session timeout? My boss wants
a system that warns prior to logging out and I'm working on something that
will "tick" the server (and by doing so always keep the session alive) but I
need to know how long the session is set to be alive (if it doesn't gets
accessed) so I can do the "timeouting" myself. We're thinking of sending it
with as an init argument if it can't be accessed, but that feels not so good
as then the administrators will have two places to change if they want to
change the timeout-time ... Any ideas?
All the best,
Anne-Li Mell
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