This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
If your JSP is already running in a servlet container, you can always contact it using Java's built-in networking and request some output. Or are you looking for a way to run a JSP without a servlet container?