Problem to output image using ServletOutputStream

Question

Hallo everybody! Can anybody help me? I try to output image (jpeg) using ServletOutputStream. First I upload jpeg image to server disassemble it to binary data and save to database binary data, image length, and image type. Then I try to output image.
Here the code:
response.reset();
response.setContentType(strContentType);
ServletOutputStream sos=response.getOutputStream();
sos.write(buf,0,bflen);
sos.close();
variable buf is array of byte with binary data
bflen is image length
strContentType it image type (image/pjpeg)
I use JRun server 3.1
I tried to save an image file:
FileOutputStream fos = new FileOutputStream("test_logo.jpg");
fos.write(buf,0,bflen);
fos.close();
And I got an jpeg file.

Answer 1

I've done the exact same thing... almost. I have a
servlet that sends a jpeg file to an applet for
processing. Anyway, I did two things differently.
First I used the write(byte[]) rather than
write(byte[], int offset, int length). If you're
going to send the whole array anyway, don't bother
with the other parameters.
Second, I call flush() on the output stream before I
close it. I have a feeling this is why. Remember,
web connections are connectionless. You don't know if
the data was send or received. I assume what is
happening is that you try to send the data then close
the connection right away and the data may not get to
the destination.
Here's what I have. I don't think the content type
really matters but I know multipart/form-data is
binary.
response.setContentType("multipart/form-data");
response.getOutputStream().write(image.data);
response.getOutputStream().flush();
response.getOutputStream().close();
I'll try it. But I have problem to call getOutputStream() method. It produce IllegalStateExeption. I think that because implicit getWriter() method calls. (I use JSP)
Do you know how to reset somehow response to have ability to call getOutputStream()?