Drop zone Rest
@OPTIONS
	@Path("/upload")
	@javax.ws.rs.Produces(MediaType.APPLICATION_JSON)
	public Response uploadFile() {
		return Response.status(200).entity("success").header("Access-Control-Allow-Origin", "*")
							.header("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT, OPTIONS")
							.header("Access-Control-Allow-Headers", "accept, Cache-Control, content-type, x-requested-with")
							.allow("OPTIONS").build();
	}

  @POST
	@Path("/upload")
	@Consumes(MediaType.MULTIPART_FORM_DATA)
	public Response uploadFile(
			@FormDataParam("file") InputStream uploadedInputStream,
		@FormDataParam("file") FormDataContentDisposition fileDetail) {

		String uploadedFileLocation = "/tmp/feroz/" + fileDetail.getFileName();

		// save it
		writeToFile(uploadedInputStream, uploadedFileLocation);

		String output = "File uploaded to : " + uploadedFileLocation;
		System.out.println(output);
		JsonObject jsonObject = new JsonObject();

		jsonObject.addProperty("success", true);
		jsonObject.addProperty("status", "success");
		jsonObject.addProperty("path", uploadedFileLocation);
		return Response.status(200).entity(jsonObject.toString()).header("Access-Control-Allow-Origin", "*")
							.header("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT")
							.allow("OPTIONS").build();

	}

	// save uploaded file to new location
	private void writeToFile(InputStream uploadedInputStream,
		String uploadedFileLocation) {

		try {
			OutputStream out = new FileOutputStream(new File(
					uploadedFileLocation));
			int read = 0;
			byte[] bytes = new byte[1024];

			out = new FileOutputStream(new File(uploadedFileLocation));
			while ((read = uploadedInputStream.read(bytes)) != -1) {
				out.write(bytes, 0, read);
			}
			out.flush();
			out.close();
		} catch (IOException e) {

			e.printStackTrace();
		}

	}