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From "Terrence Szeto" <t3sz...@hotmail.com>
Subject Re: Listing all currently logged users
Date Tue, 28 May 2002 17:55:04 GMT
I think I know what you're trying to say.

but where does HttpSessionListern go?
do I just make it a private variable in a JSP page? Or make a class to 
implement it.

then, what actually fires the HttpSessionBindingEvent to it?
and how does the HttpSessionBinding Event know when a user has timed out to 
fire an event to tell the 'master list' that that specific user is gone.
any code is help...

THanks
Terrence



From: Phillip Morelock <subscriptions@phillipmorelock.com>
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To: Tomcat Users List <tomcat-user@jakarta.apache.org>
Subject: Re: Listing all currently logged users
Date: Tue, 28 May 2002 09:48:55 -0700
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You should really use the lifecycle listener approach and roll your own
hashtable- or list-based implementation, depending on your needs.  Going for
the internals is cool, but it is a non-portable hack.

HttpSessionListener is the way to go, IMHO.

fillup


On 5/27/02 3:13 PM, "Mats Nyberg" <mn@tim.se> wrote:

 > not beeing the expert I'd take any suitable Realm-interceptor (e.g.*
 > org.apache.tomcat.request.SimpleRealm*,
 > or whatever you use depending on your source of userdata).
 >
 > I'd subclass it only to maintain a list of people logging in. should be
 > done in a jiffy, eh ;)
 >
 > ~mats
 >
 >
 > Ben Walding wrote:
 >
 >> I'm not sure if this is the best way, but I added a
 >> HttpSessionListener to find out when
 >> sessions were created / destroyed and just maintained a list.
 >>
 >> It is probably more portable than hacking your way into Catalina
 >> internals.
 >>
 >> See the servlet spec for details on lifecycle listeners.
 >>
 >> Terrence Szeto wrote:
 >>
 >>>
 >>> Is it possible to list all the users who are currently logged in?
 >>>
 >>> I'm using FORM authentication with a JDBC Realm.
 >>>
 >>> Basically what I want is for users to be able to see who's currently
 >>> online (other users).
 >>>
 >>> Is there a simple way of approaching this?
 >>> and if I were to have to write something for myself, to say, keep
 >>> track of all the users who logged in, is there an event which is
 >>> fired when a user's session is invalidated so I remove him from a
 >>> master "logged-in" user list?
 >>>
 >>>
 >>> Thanks for your help everyone..
 >>>
 >>>
 >>> Terrence Szeto
 >>> Cybermation Web Architect
 >>>
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