Servlet, writing data

I had a servlet which was running on my local windows machine using local host. We have managed to get hold of one of our colleagues 开发者_JS百科in America who is now hosting it on their Linux box so we can test the programme in a mimmicked real world environment for now.

However i seem to be getting an error, which i cant debug write now as my supervisor has gone for the day and i dont have access. We left it on the understanding i would do some investigation.

Just before he left i narrowed it down to these lines of code

file = File.createTempFile("temp", Long.toString(System.nanoTime()));
             out.print("Managed to make temp file in trst_servlet");
             FileWriter writer = new FileWriter(file);
             ObjectOutputStream oos = xstream.createObjectOutputStream(writer, "ProcessedInformation");
         oos.writeObject(returnedSearchData);
         oos.flush();
         oos.close();

         out.print("object Persisted"); //PROGRAMME MAKES IT TO HERE
         response.setContentLength((int)(file.length()));
         FileInputStream in = new FileInputStream(file);

         OutputStream ops = response.getOutputStream();

         byte[]buf = new byte[1024];
         int count = 0;
         while((count = in.read(buf)) >= 0)
         {
             ops.write(buf, 0, count);
         }
         in.close();
         ops.close();
     }

     catch(IOException ex)
             //EXCEPTION CAUGHT HERE

I was wondering, does anyone have any idea if this is an issue maybe with buffer sizes on a Linux box, or writing large file sizes for example and then trying to send it back down the wire.

Essentially this java based servlet writes xml to my c# programme.

Thanks

What is the error? Does it work if you load the URL in the browser?

Possible problems:

1. Given that it was working previously on another box, now on a new box the file coud not be found because it is in a different relative location.

2. Worked on windows machine, but not on Linux? Did you use windows path separators in a path to the file? "path\to\file" instead of "path/to/file"?

3. You don't have Content-type set to "application/xml" and C# client rejects it for some reason. (Test it in a browser).