Problem using to servlet. IllegalStateException.

[LouisVoo]

Hello,       I have a jsp page which will forward to the servlet.  The servlet will generate a pdf file and then using the response.getOutputStream() to write the pdf file. So the user can download the pdf file.     My problem is when I using response.getOutputStream() in my servlet class, I got java.lang.IllegalStateException, because the getWriter method has been called when parsing the jsp forward page.     Any suggestion?         Thank you.       Regards   Louis