You could use a
servlet filter to intercept the request before it gets to your page. In the filter, you get the value of the parameters, manipulate them however you like, and set them as request attributes of the same name but new value. Then, in your serlvet/jsp, you use request.getAttribute instead of request.getParameter.
Anthony W.<br />MCP, SCJP 1.4, SCJD, SCWCD 1.3, SCWCD 1.4, SCBCD