restTemplate x-www-form-urlencoded

MultiValueMap<String, Object> postParameters = new LinkedMultiValueMap<>();
postParameters.add("mobile", phone);
postParameters.add("smsCaptcha", code);
postParameters.add("action", "unKnown");
HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", "application/x-www-form-urlencoded");
HttpEntity<MultiValueMap<String, Object>> r = new HttpEntity<>(postParameters, headers);
ResponseMessage responseMessage = restTemplate.postForObject(url, r, ResponseMessage.class);

RestTemplate restTemplate = new RestTemplate();
HttpHeaders headers = new HttpHeaders();
MediaType type = MediaType.parseMediaType("application/json; charset=UTF-8");
headers.setContentType(type);
headers.add("Accept", MediaType.APPLICATION_JSON.toString());

JSONObject jsonObj = JSONObject.fromObject(params);

HttpEntity<String> formEntity = new HttpEntity<String>(jsonObj.toString(), headers);

String result = restTemplate.postForObject(url, formEntity, String.class);