Obviously, to accomplish this, you have to keep track of who is logged into
your system. One place to do this is using the Application Scope within the
JSP's.
You could put a HashSet in the Application Scope that contains the UserID's
(or Departments) of all the Logged in Users.
When a user Logs Off, you would have to remember to remove them from the
Set.
One thing to remember, if the user forgets to log off, or walks away from
their computer for an extended period, everyone from that department will be
locked out of the system. To prevent this, you might want to put an Object
in the user's HttpSession that implements the HttpSessionBindingListener
interface. When the session times out, you'll receive the valueUnbound()
event and you can remove that user from the HashSet.
(*Chris*)
----- Original Message -----
From: "SANJIB BISWAS" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, October 19, 2001 4:07 PM
Subject: Re: [JSP-INTEREST] Multiple users
> Hi Franco ,
> Here is more detailed information.
> As soon as the user logs on to the system by using the
> web brouser , I do an authentication of the valid user
> and then get the detailed information of the user from
> the database and this information contains the
> information of the user's department. I want that at
> this moment if an user is already logged on from the
> same departmnet then throw this new user out of the
> system.
> Thanks
> Sanjib
> --- "Miao, Franco CAWS:EX"
> <[EMAIL PROTECTED]> wrote:
> > Need more detail info, like how to logon your system
> > through Brower or what?
> > What application they normally run in your system...
> >
> > Franco
> >
> >
> >
> > -----Original Message-----
> > From: sanjib B [mailto:[EMAIL PROTECTED]]
> > Sent: Friday, October 19, 2001 3:27 PM
> > To: [EMAIL PROTECTED]
> > Subject: Multiple users
> >
> >
> > Hi All,
> > I am having a problem in determining how can I
> > prevent users from the same
> > department logging on to my system ? (In my system
> > users always belong to
> > one department.) Any suggestions ??
> >
> > Thanks
> > Sanjib
> >
> >
>
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