How to declare Output as Image?

[Andrej Rosenheinrich <to...@die-titanen.de>]

Hello,

i have a servlet, getting an BufferedImage, that shall be displayed in 
my webpage. for doing this I use the following code:

        ServletOutputStream sos = response.getOutputStream();
        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(sos);
        encoder.encode(image);

(image is the Buffered Image)
Well, the servlet does something, the title-line even claims that there 
is a graphic of  a certain size (the right one, btw ;-)), but in the 
page is only the url of the servlet :-(
I guess, I somehow have to tell the servlet/outputstream??? that the 
upcoming data is an image. right? how can i do this in a servlet? any hints?

TIA
Andrej

Re: How to declare Output as Image?

[Denis Haskin <De...@HaskinFerguson.net>]

Andrej Rosenheinrich wrote:

> Hello,
>
> i have a servlet, getting an BufferedImage, that shall be displayed in
> my webpage. for doing this I use the following code:
>
>         ServletOutputStream sos = response.getOutputStream();
>         JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(sos);
>         encoder.encode(image);
>
> I guess, I somehow have to tell the servlet/outputstream??? that the
> upcoming data is an image. right? how can i do this in a servlet? any hints?

You have to tell the client what the content-type of the response is, so add
something like:

response.setContentType("image/jpeg");

Then when the browser gets the response, it looks at the header and says "oh,
it's image data" and knows to render it accordingly.

dwh