Apache Commons Latka -

This is an amazing framework we used to test our J2EE app server JRun, for our Servlet engine. The entire JSP and Servlet engine testing was done using Latka.

http://commons.apache.org/latka/

Latka abstracts the request and response check through XMLs. A typical testcase would be hitting a URL with a request, and validating the http response for response type and content, and without having to write heavy scripting. We used XMLs, that, at run-time get converted to JUnit testcases, and at the end of testing, get a nice XML & HTML report.

Check this out. And.. the disclaimer, maybe there are better frameworks available now, as I used this 5 years back. Please enlighten me about other frameworks :)