HttPclient 以post方式发送json

使用HttpClient 以POST的形式发送json字符串 
步骤: 
1.url 、parameters 
2.创建httpClient对象 
3.创建HttpPost对象 
4.为post对象设置参数 
5.将参数以实体的实行放入post对象中 
6.client.execute(post);返回response对象 
7.通过response对象获取响应码， 
8.获得结果实体 

Java代码  

1. 1. public void HttpClientPostByJson(){  
   2.         String url = "http://localhost:8080/../../";  
   3.         String param = "{\"endTxnDate\":\"20151114\",\"merchId\":\"\",\"sendTime\":\"201510132012123\",\"startTxnDate\":\"20151111\"}";  
   4.                 //创建client和post对象  
   5.         HttpClient client = HttpClients.createDefault();  
   6.         HttpPost post = new HttpPost(url);  
   7.         //json形式  
   8.         post.addHeader("content-type", "application/json;charset=utf-8");  
   9.         post.addHeader("accept","application/json");  
   10.         //json字符串以实体的实行放到post中  
   11.         post.setEntity(new StringEntity(param,Charset.forName("utf-8")));  
   12.         HttpResponse response = null;  
   13.         try {  
   14.                         //获得response对象  
   15.             response = client.execute(post);  
   16.         } catch (Exception e) {  
   17.             e.printStackTrace();  
   18.         }   
   19.           
   20.         if(HttpStatus.SC_OK!=response.getStatusLine().getStatusCode()){  
   21.             System.out.println("请求返回不正确");  
   22.         }  
   23.           
   24.         String result="";  
   25.         try {  
   26.                         //获得字符串形式的结果  
   27.             result = EntityUtils.toString(response.getEntity());  
   28.         } catch (Exception e) {  
   29.             e.printStackTrace();  
   30.         }   
   31.         System.out.println(result);  
   32.           
   33.     }  

转载于:https://www.cnblogs.com/muhy/p/10401241.html