>>> Heinz Wehner <[EMAIL PROTECTED]> 30-Jan-00 6:26:21 PM >>>
>However, it's still not clear why you must even do this before
>sending any output in case you respond using a writer. My
>guess would be that by accessing a Writer the servlet container
>already writes the response header.
>Is that correct? I'm also uncertain as to wether this behaviour
>conforms with the Servlet API specification.
I don't think that is correct.
It is not *necessary* for a servlet engine to *commit* the response
when response.getWriter() is called.
In fact, it is not necessary for a servlet engine to commit the
response when output is performed.
You can establish whether a response is commited by using
response.isCommited().
(However, since you can't set the session after the response has been
commited you should ensure that you get the session before it is
possible to commit the response).
I was not aware that any servlet engine committed the response on
response.getWriter() - I don't think they should personally but it is
an implementation detail that will depend on the servlet engine.
Having said that I don't think a good implementation would do this.
Nic Ferrier
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