On 4/30/07, Chris Edwards <[EMAIL PROTECTED]> wrote:
Hi. I have my session-timeout set to 60 minutes in web.xml. The page in
question is dynamically rendered based on what's currently in the
session and the user adds items one at a time. So they fill out a form,
submit it to a Struts Action which adds it to the Session object and
then forwards back to that page where the new item is added to a list or
an error message is given.
Everything works fine except that the session will time-out and then
they are forwarded to the "session-timeout-login-again" page. Since the
data is written to the DB after they have added all items some people
are losing their work if they happen to hit that 60 minutes.
In the above case it is the ~same~ request within same browser
instance, the session times-out after an inactive interval.
So if they add things to the cart but the browser stays idle for more
than 60 minutes, then the session times out.
However if you implement
http://java.sun.com/javaee/5/docs/api/javax/servlet/http/HttpSessionListener.html
, it sends a notification when the Session is about to be invalidated
( JavaEE 5) , on receiving the notification you can choose to either
commit or rollback the transaction or save it temporarily.
Does submitting a new Request not constitute a "reset" of the
session-timeout?
new Request -- yes (if HTTP Redirect is used, it is a new Request)
same Request -- no (if HTTP Forward is used, it is the same Request)
Most likely you are navigating from one page to the next with Http
Forward, which maintains the ~same~ Http Request throughout the
navigation.
The page should not be cached since a new item is added
or an error message is given after every form submit.
Thanks in advance for any help / advice. All the best.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
When Http Redirect is used a new session is created and it resets the
session timeout interval....
Session ID : F98B9FA599811B0A206C73316B970EB0
Session was created at : Mon Apr 30 12:52:03 EDT 2007
Perform Http Redirect
Session ID : 4779909EE1A36F003E381D6C913B31E5
Session was created at : Mon Apr 30 12:52:08 EDT 2007
Notice a new session is created above, thus resets the timeout interval.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
When Http Forward is used the same request and thus the same session
exists throughout, so the session timeout interval of the session
created by this request remains the same.
Session ID : 55FD6EF762C1AFC549F2EBBFB7CC5208
Session was created at : Mon Apr 30 12:54:09 EDT 2007
Perform Http Forward
Session ID : 55FD6EF762C1AFC549F2EBBFB7CC5208
Session was created at : Mon Apr 30 12:54:09 EDT 2007
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-Regards
Rashmi
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