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From Tim Funk <funk...@joedog.org>
Subject Re: JSP pages mixing for concurrent users
Date Sun, 27 May 2007 00:04:42 GMT
Me thinks this is your problem. You have some variables being shared 
which are not thread safe.

 > -All JSP pages extend a common class which writes the header and footer
 > using the JspWriter.


-Tim

Florian wrote:
> Hi.
> 
> I have a group of developers that are experiencing an intermitent problem with 
> some of the their JSP pages when concurrent users are using the application.
> They have had a hard time reproducing the issue in the development environement
> so the details are still sketchy. I wanted to post this anyway hoping someone 
> would recognize this as a know issue.
> 
> The scenario:
> User A is requesting JSP page X and User B is requesting JSP page Y.
> 
> The symptoms:
> User A: instead of seeing Page X, user X sees the header of page X and then 
> Page Y with the date from user B's session.
> 
> User B: sees a blank page.
> 
> Additional clues:
> -The user session are unaffected by the event described above. A simple 
> refresh allows the user to recover.
> -A "stream has already been closed" exception is thrown by the code for Page X
> when an attempt is made to write to it.
> -All JSP pages extend a common class which writes the header and footer
> using the JspWriter.
> -No static or instance variables are used.
> -Using Tomcat 5.5.17
> -Using 1.4 on Solaris 10.


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