PageContext.forward causes strange exception

Question

Hi,
I've found a strange exception using pageContext.forward.
The code is as follows:
try {
} catch (Exception e) {
out.println (...); //for debugging purposes
pageContext.forward (errorPage);
pageContext.forward throws an "IllegalStateException: Attempt to clear a buffer that's already been flushed". (I think that this is the right translation, the original is in Spanish).
I think that there is a very similar problem described in this forum:
http://forum.java.sun.com/thread.jsp?forum=45&thread=343314
Has anyone found a similar problem (with its solution, if possible ;=)
Thanx

Answer 1

Howdy,
You've already written to you JSP output, and in this situation you can't forward 'cause it's automatically flushed.
try changing your forward method position, befor any out.print() or like that.
OR use this trick,
<%@ page autoFlush="false" %>
// Write to JSP and other stuffs...
// Forward to another content...
// Do your stuffs...
response.flushBuffer();