saving an image via an url

[gurnard123]

Hello. I am a newbie to Java, so please bear with me.

I am working on an image app. What I have achieved is to load an image, affect it (brightness, scale etc) and then save it to the local HD as a Jpg... no problems and I am impressed with the way Java deals with this.

Now I am trying to save the image via an URL, or upload it to a server via the http proxy. I have managed to communicate over http, but am having problems sending an image.

I have seen posts here where an image is loaded over an url, but written via one. Code follows.

this code is saving to the HD no problem:

                        FileOutputStream fo = new FileOutputStream("myImg.jpg");
	  BufferedOutputStream bo = new BufferedOutputStream(fo);
	  ImageIO.write(destination, "jpeg", bo);
                       //destination is a buffered image
	  bo.close();

This is the code I have tried to write the image, but I am sure I am missing something as I am not creating a file, just trying to output to the stream... which I am sure is wrong:

	   URL url = new URL( "http://127.0.0.1/testing/javaUpload/myImg.jpg" );
	   HttpURLConnection urlcon  =   (HttpURLConnection) url.openConnection(  );

	   urlcon.setRequestMethod("POST");
	   urlcon.setRequestProperty("Content-type", "image/jpeg");
	   urlcon.setDoOutput(true);
	   urlcon.setDoInput(true);

  	   ImageIO.write(destination, "jpeg", urlcon.getOutputStream());
                        //destination is a buffered image.

thanks for taking the time to read this post, hope someone can point me in the right direction.

cheers
Martin

[Atlas]

At the first look, I would say that you need to flush the BufferedOutputStream.

BufferedOutputStream.flush();

Without this, the data stays within the buffer till the stream fills out. Perhaps, in your case, this is what the problem is.

If this doesn't work, I will look at this in more detail.

[gurnard123]

Hello, thanks for taking the time to read my post.

The first code section works fine, with the bufferedOutputStream, this is saving the image to the HD not a problem here.

The problem I am having is with the second code section where I am trying to save a file to a server.

Any pointers would be appreciated... cheers again for reading.

cheers
Martin