This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
Your have not correctly configured your web.xml for the JSP nor the Servlet.
here is an example of how to setup a JSP file in the DD. In particular, you will need to use a <servlet-mapping> element for mapping them to a url pattern.