Re: Strange request.setAttribute() problem

[Tim Funk]

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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