Sessions/URL rewriting

[Jessica Farnham]

Hi--
I'm trying to use sessions in a servlet using URL rewriting, but it doesn't seem to be working right for me. The servlet should send the user a page that includes a form that has an encoded URL as the submit address. Since I can't make this happen by redirecting, I've been doing the following:
1. Create the session
2. Encode the URL
3. Insert the encoded URL into the HTML string
4. Write the HTML to the response PrintWriter
Bu when the page comes up, the URL hasn't been encoded. Am I missing a step or doing something wrong here? Or is there something I need to configure to enable sessions? I'm doing this with Tomcat through the Sun j2ee reference implementation.
I'd appreciate any thoughts. Thanks--
Jessica