Submit a PDF form to a service and receiving a response back

package com.qoppa.jaxrs.service.test;
 
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
 
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.ResponseBuilder;
 
@Path("test/formsubmit")
public class FormSubmitService
{
	/**
	 * Post some form data and return fdf.
	 * @param documentAction
	 * @return
	 */
	@POST
	@Produces("application/vnd.fdf")
	public Response post(InputStream formData)
	{
 
		try
		{
			copyFile(formData, "C:/test/formdata.xfdf");
		}
		catch (IOException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return getFileResponse(new File("C:/test/response.fdf"), "response.fdf");	
	}
 
	private void copyFile(InputStream file, String to) throws IOException
	{
		// save the file directly so we don't have to worry about passwords
		FileOutputStream os = new FileOutputStream(to);
 
		byte[] buffer = new byte[1024];
		int bytesRead;
		while ((bytesRead = file.read(buffer)) != -1)
		{
			os.write(buffer, 0, bytesRead);
		}
		file.close();
		os.flush();
		os.close();
	}
 
	private Response getFileResponse(File file, String fileName)
	{
		ResponseBuilder response = Response.ok((Object) file);
		response.header("Content-Disposition", "attachment; filename=" + fileName);
		return response.build();
	}
}