Apache POI doesn't take a HTML table as input, but just fullworthy Java objects. Just reload the same data in the servlet as you loaded for the initial display in JSP and then feed it to Apache POI instead of forwarding to JSP. If you want to avoid reloading the same data, then you can consider to store it in the session scope, but this has a negative impact on server memory usage and client experience.
At least, I'm assuming that your JSP/Servlet/database code is well written, else it's going to be a lot of refactoring/rewriting work.
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BalusC
2010-07-15 18:58:42