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Reply-To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
Message-ID: <3F25007A.1040705@joedog.org>
Date: Mon, 28 Jul 2003 06:52:42 -0400
From: Tim Funk <funkman@joedog.org>
Organization: Human being
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To: Tomcat Users List <tomcat-user@jakarta.apache.org>
Subject: Re: Strange request.setAttribute() problem
References: <64C0031C-C0C4-11D7-967F-003065B2A2AA@mac.com>
In-Reply-To: <64C0031C-C0C4-11D7-967F-003065B2A2AA@mac.com>
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This is the correct behavior. In this scenario, you are operating on the 
request, not the session.

request.getParameter --> Get stuff from the query string (or input stream if 
post) - a per request thing

request.setAttribute --> Set an attribute in the life of this particular request

-Tim

Charles So wrote:
> Hello, I come across a problem with TC4.1.24 and hope fellow list users 
> can help me...
> 
> 
> 
> I set a variable in a servlet by calling:
> 
> request.setAttribute("itemnumber", 
> Integer.valueOf(Integer.toString(itemnumber)));
> 
> 
> 
> A JSP will then detect if this variable exists or not by:
> 
> if ( request.getParameter("itemnumber") != null ) {
>     try {
>         itemnumber = 
> Integer.parseInt((String)request.getParameter("itemnumber"));
>     } catch (NumberFormatException ex) {
>         System.out.println("No");
>     }
> }
> 
> 
> 
> 
> I have two different web browsers opened (say, one IE and one Opera), 
> and both eventually will come to the page containing the code above.
> 
> The strange thing is that if the variable "itemnumber" is set via IE, 
> the same "itemnumber" will be seen at Opera!!!!!
> 
> This shouldn't happen as both have different session ID, and are 
> completely unrelated.
> 
> 
> 
> Who has come across this problem? How can I work around this?
> 
> Thanks!
> 
> 


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