httpclient post 参数    

public static void main(String args[]) throws IOException {        CloseableHttpClient client = HttpClients.createDefault();      String url = "http://localhost:8888/QueryUser";      HttpPost post = new HttpPost(url);      String name= "mike";      JSONObject arg = new JSONObject().element("age", 44).element("job", "cooker"));      String queryCase = "name=" + name+ "&&arg=" + arg;      StringEntity reqEntity = new StringEntity(queryCase);      System.out.println(reqEntity);      reqEntity.setContentType("application/x-www-form-urlencoded");      post.setEntity(reqEntity);      HttpResponse response = client.execute(post);        if (response.getStatusLine().getStatusCode() == 200) {          HttpEntity entity = response.getEntity();          String message = EntityUtils.toString(entity, "utf-8");          System.out.println(message);      } else {          System.out.println("请求失败");      }  }