Change a response's content type mid-post?

[neurologic]

Hi there,

I'm wondering if it's possible to change the content type of a
HttpResponse after the call to getWriter has been made? What I'm
trying to do is upload a file, and then once it has bee uploaded write
some HTML to the screen indicating that the upload is complete. Any
ideas anyone?

e.g.

response.setCon tentType("text/csv");
response.setHea der("Cache-Control", "no-cache");
response.setHea der("Expires", "-1");
response.addHea der("Content-disposition",
"inline;filenam e=report.csv");
out = response.getWri ter();

.... then write out your CSV file
can you then:

response.setCon tentType("text/html");
response.setHea der("Cache-Control", "no-cache");
response.setHea der("Expires", "-1");
out = response.getWri ter();

It doesn't seem to work for me, so I'm wondering is it even possible?

Cheers,
Paul.

[shriop]

The writer is a response thing. Uploading is a request thing. From your
code, it looks more like you're trying to download a csv file, not
upload. And no, you can't download a csv file, which will probably
either spawn excel or a download prompt, and then somehow display html
also, but again, everything you said put together doesn't quite add up,
so I think you're using a wrong object somewhere.

[viator]

Not quite possible with HTTP for atleast now. However you can use a
technique called server push. For more information see Java Servlet
Programming by Jason Hunter or visit www.servlets.com. :-)

Viator