本人微信 zf363133213 歡迎各位新增好友，共同探討問題

第一種方法：

public Object test(){

HttpHeaders headers = new HttpHeaders();//http請求頭

RestTemplate restTemplate = new RestTemplate();

headers.setContentType(MediaType.parseMediaType("application/json;charset=UTF-8"));

headers.add("versionNo","123");

Map<String,Object> body = new HashMap<>();//請求body

body.put("carNo","123");

HttpEntity<Map<String,Object>> requestEntity=new HttpEntity<Map<String,Object>>(body,headers);

Map<String,Object> map = restTemplate.postForObject("http://test/get",requestEntity,Map.class);

//String jsonStr =restTemplate.postForObject("http://test/get",requestEntity,String.class);

retrurn map;

}

第二種方法：

public Object test(){

Map<String,Object> content =new HashMap<String,Object>();

content.put("carNo","123");//請求引數

HttpClient httpClient = new HttpClient();

PostMethod post = new PostMethod("http://test/get");

post.addRequestHeader("appId","123");

post.addRequestHeader("content-type","application/json;charset=utf-8");

RequestEntity entity =new StringRequestEntity(JSONObject.toJSONString(content),"application/json;charset=utf-8","utf-8");

post.setRequestEntity(entity);

httpclient.executeMethod(post);

String info=new String(post.getResponseBody(),"utf-8");

return info;

}