mike niemaz typed the following on 09:40 AM 2/15/2001 +0100
>Hi,
> I'm having troubles to understand how really sessions are working.
> I'm using a servlet to handle every client requests and I'm using
>jsp
> & session to display & various objects between frames, such as:
>
> HttpSession session = req.getSession(false);
> Toto toto = session.getAttribute("toto");
> if (toto.getName() == "mike")
> toto.setInfotoDisplay("Hi mike, waza?");
> else if (toto.getName() == "alain")
> toto.setInfotoDisplay("Tcho alain, ca boom?");
> ...
> session.setAttribute("toto", toto);
>
> My concern is that I really thought that the object I
> get with "getAttribute" on sessions were attached
> to the according user.
> But apparently not, it looks like my object Toto is shared
> amongst my clients and thus everything is f**** up ;-(
>
> Any idea how I could stick a session per user?
Normally sessions do work just fine per user. However it's easy to make
mistakes with scope which can produce the kinds of problems you're
talking about: static variables, class variables in a servlet class or
<%! Toto toto = new Toto() %> in JSP pages, or reusing the same
object by changing its values and inserting it into a session for a
different user, etc. For example, if you have
Toto toto = new Toto();
doGet(...) {
toto.setName = ...
session.setAttribute("toto", toto);
}
In this case, the Toto object _will_ be shared between users, because
only one object is ever created.
But it's hard to say what the problem is without seeing the real code, or at
least a boiled down example of the code which you have compiled and verified
still has the problem.
Kief
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