RequestBuilder requestBuilder = new RequestBuilder(RequestBuilder.POST, Constants.HOST_LIVE);
        //Cross domain ajax request
        requestBuilder.setHeader("Content-type", "application/x-www-form-urlencoded");
        requestBuilder.setHeader("sig", "e5c7cdd32221cf1bfb353b31f2103e35");
        requestBuilder.setRequestData(jsonString);
        requestBuilder.setCallback(callBack);

        try {
            requestBuilder.send();
        } catch (RequestException e) {
            e.printStackTrace();
        }

@RequestMapping(value = "/vehicle/list", method = RequestMethod.POST)
    @CheckRequest(checkSession = false)
    public
    @ResponseBody
    Object getVehicles(HttpServletResponse response,@RequestBody str) throws TorgException {
        VehicleParamsJSON adParams = jsonWrapper.wrap(str, VehicleParamsJSON.class);
        response.setHeader("Access-Control-Allow-Origin", "*");
        return vehicleService.getAll(adParams);
    }