RE: JSP -- JAVA400-L

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I have done the following simple test:

Generated two servlets using VAJ smart guide.
In the first one added some information into the session
In the second one try to get the information from the session

The session in the second servlet is a new one

I called using the following urls:
http://localhost:8080/servlet/test.sessions.FirstServlet
http://localhost:8080/servlet/test.sessions.SecondServlet

The code is the following:

public void performTask(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response) {

        try

        {
                javax.servlet.http.HttpSession session =
request.getSession(true);

                session.setAttribute("attribut", new String("In the
session"));

                System.out.println("Put into the session");

        }
        catch(Throwable theException)
        {
                // uncomment the following line when unexpected exceptions
                // are occuring to aid in debugging the problem.
                //theException.printStackTrace();
        }
}

public void performTask(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response) {

        try

        {
                javax.servlet.http.HttpSession session =
request.getSession(true);

                String msg = (String) session.getAttribute("attribut");

                System.out.println("Got the following information" + msg);

        }
        catch(Throwable theException)
        {
                // uncomment the following line when unexpected exceptions
                // are occuring to aid in debugging the problem.
                //theException.printStackTrace();
        }
}

Any idea?

It with VAJ4 on Win200 pro

Gilles

-----Original Message-----
From: Gary L Peskin [mailto:garyp@firstech.com]
Sent: mercredi, 13. f�vrier 2002 09:39
To: java400-l@midrange.com
Subject: RE: JSP


I'm not familiar with VAJ 4 (I switched to WSAD) but assuming it's
similar to 3.5.3, can you please examine your session.xml file and see
the elements values as described in VAJ help under "Configuring the
default Web application".  If you can't figure the problem out, please
post your session.xml file.

Thanks,
Gary

> -----Original Message-----
> From: java400-l-admin@midrange.com
> [mailto:java400-l-admin@midrange.com] On Behalf Of Ducret, Gilles (CH)
> Sent: Wednesday, February 13, 2002 12:08 AM
> To: 'java400-l@midrange.com'
> Subject: RE: JSP
>
>
> This message is in MIME format. Since your mail reader does
> not understand this format, some or all of this message may
> not be legible.
> --
> [ Picked text/plain from multipart/alternative ]
> It is in the Websphere Test Environment.
>
> I am just migrating code from VAJ3.5 to VAJ4.
>
> I had problems because we used sendRedirect instead of forward.
>
> I have changed the code and used forward to call JSPs from
> servlets, and servlets from servlets, etc ...
>
> When I forward from the servlet to the JSP it is ok, I can
> find the information in the session. When I call another
> servlet (from an hyperlink, or typing the url), when I enter
> in the second servlet code, the session id is different.
>
> We have implemented an MVC model based on an article found in
> VADD. Each servlet derives from a base class, and in this
> base class we get the information from the session. The code
> is _session = request.getSession(true);
>
> Why in some case it creates a new session and in others no?
>
> Gilles
>
> -----Original Message-----
> From: Gary L Peskin [mailto:garyp@firstech.com]
> Sent: mardi, 12. f�vrier 2002 17:54
> To: java400-l@midrange.com
> Subject: RE: JSP
>
>
> Gilles -
>
> What container are you running this in?  Depending on the
> container, there may be certain setup requirements where you
> have to tell the container that you want to use sessions,
> what the session timeout is, etc.  How are you identifying
> sessions?  In other words, how does the container match an
> interaction to a stored session?  Are you using cookies or
> URL rewriting or some other means?
>
> If your code is working, I suspect the session support is not
> properly set up for the container.  However, without knowing
> what servlet engine you're using, it's difficult to go further.
>
> Gary
>
> > -----Original Message-----
> > From: java400-l-admin@midrange.com
> > [mailto:java400-l-admin@midrange.com] On Behalf Of Ducret,
> Gilles (CH)
> > Sent: Tuesday, February 12, 2002 8:34 AM
> > To: JAVA400-L (E-mail)
> > Subject: JSP
> >
> >
> > This message is in MIME format. Since your mail reader does not
> > understand this format, some or all of this message may not be
> > legible.
> > --
> > [ Picked text/plain from multipart/alternative ]
> > Hello,
> >
> > I have a very strange problem and I cannot find where
> > it comes from.
> >
> > I have a first servlet, that put some information into
> > the session. This servlet then calls a jsp to display information.
> >
> > The jsp displays the information plus an hyperlink to
> another servlet.
> >
> > When I clic on that link and enter the servlet code, I cannot find
> > anymore the object in the session. The session ID has also
> changed. In
> > fact a new session has been created for this servlet.
> >
> > What can make a new session to be created?
> >
> > The link is:
> >
> > <a href="servlet/MyServlet">Test my servlet</a>
> >
> > Thanks
> >
> > Gilles
>
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