Abort JSP

JSP is just a servlet method, you can just put (whereever necessary) a < % return; % > to abort JSp page processing.

OR,

Create a page called exit.jsp etc. with only this content:
<\%@page language="java"%>

Then EXIT your page this way:

<\% out.flush(); %>
<\jsp:forward page="exit.jsp" />

This works great within dynamically included JSP-pages and outputs the content processed this far.