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.
Without seeing the JSP source it's rather hard to diagnose what might be going wrong. Since adding that method, have you recompiled the class, copied it into an appropriate location in WEB-INF/classes and restarted the web app?