RestTemplate设置MediaType

String url = "http://testurl";
Map<String, Object> requestMap = new HashMap<>();
resultMap.put("param1", "value1");
resultMap.put("param2", "value2");

HttpHeaders headers = new HttpHeaders();
MediaType type = MediaType.parseMediaType("application/json; charset=UTF-8");
headers.setContentType(type);
headers.add("Accept", MediaType.APPLICATION_JSON.toString());
HttpEntity<String> formEntity = new HttpEntity<String>(JSONObject.toJSONString(requestMap), headers);

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