How to call controller in other server, and handler result of called controller.

[vnvictor]

I have 2 webpage (java spring 2.5, MVC) name "web 1" and "web 2".

- At "web 1", I have a controller name "controller 1".
this controller will return a zip file to client, and allow client to download zip file.
----code controller 1-------

@Controller
public class TransferFile {
	@RequestMapping("/transfer.ws")
	public ModelAndView TransferZipFile(HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		String zipFileName = "zipfile.zip";
		String zipFilePath = "c:/" + zipFileName;
		InputStream in = new FileInputStream(zipFilePath);
		response.setContentType("application/download");
		response.setHeader("Content-Disposition",
				"attachment; filename=\"" +  zipFileName + "\"");
		response.setContentLength(in.available());
		ServletOutputStream op = response.getOutputStream();
		int length = 0;
		byte[] buf = new byte[1024];
		while ((in != null) && ((length = in.read(buf)) != -1)) {
			op.write(buf, 0, length);
		}
		in.close();
                op.flush();
		op.close();
		return null;
	}
}

-----------------------------
I was check download file ok.

- At "web 2", i have a controller name "controller 2".
this controller will call link of "controller 1", and saving zip file of "controller 1" to driver c.
----------
I was try, but i can't saving zip file to driver c.

Please help me.
Thanks you very much.