This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
Have you considered what you are going to do if somebody bookmarks the URL of your JSP and has the browser request it directly? You might want to consider Rajeev's suggestion.