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session attribute problem

Joyce Derzaph

Joined: Mar 18, 2004
Posts: 14
I'm having trouble passing attributes back and forth between a servlet and a jsp.
I set the attribute in the servlet then forward the request and response to a jsp. The attribute shows up in the servlet but comes up null in the jsp.
Here is the code sections:

session.setAttribute("trans",t); // t was initialized earlier
RequestDispatcher rd = req.getRequestDispatcher("/mainTill.jsp");

<% double total = 0;
Transaction t;
t = (Transaction)request.getAttribute("trans");
<%= t.toString() %>
If anyone has any ideas I'd appreciate it. This is driving me nuts!

Sonny Gill
Ranch Hand

Joined: Feb 02, 2002
Posts: 1211

Originally posted by Joyce Derzaph:

session.setAttribute("trans",t); // t was initialized earlier
t = (Transaction)request.getAttribute("trans");

You are setting 't' as a session attribute, but then you are trying to retrieve it as a request attribute.

either use setAttribute and getAttribute with the session object, or use both with the request object

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jaya jaya

Joined: May 17, 2003
Posts: 8
Use session.getAttribute("tran")
Bear Bibeault
Author and ninkuma

Joined: Jan 10, 2002
Posts: 63355

"jaya jaya",

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Joyce Derzaph

Joined: Mar 18, 2004
Posts: 14
Doh! I found it last night. Thanks. I shouldn't program late at night.

I agree. Here's the link:
subject: session attribute problem
jQuery in Action, 3rd edition