Getting Exception-java.lang.IllegalStateException: getOutputStream() has already been called for this response

Question

I am new to jsp,when I try to invoke a jsp page by some parameters named cId and passWord,I getting this error,The code I have been trying is given below,I have already gone

Answer 1

You shouldn't try and do this inside a JSP. The JSP will already have obtained an output stream to write it's output. You need to use a servlet to return your XML.

When you call response.getOutputStream, it is conflicting with the fact that the JSP (which will be compiled into a servlet) already obtained an output stream. This is why it is resulting in the IllegalStateException.