Java发送POST请求，参数为JSON格式，并接收返回JSON数据

原⽂地址：

/**

* 发送post请求 * @param url 路径

* @param jsonObject 参数(json类型) * @param encoding 编码格式 * @return

* @throws ParseException * @throws IOException */

public static String send(String url, JSONObject jsonObject,String encoding) throws ParseException, IOException{ String body = \"\";

//创建httpclient对象

CloseableHttpClient client = HttpClients.createDefault(); //创建post⽅式请求对象

HttpPost httpPost = new HttpPost(url);

//装填参数

StringEntity s = new StringEntity(jsonObject.toString(), \"utf-8\"); s.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, \"application/json\")); //设置参数到请求对象中 httpPost.setEntity(s);

System.out.println(\"请求地址：\"+url);

// System.out.println(\"请求参数：\"+nvps.toString());

//设置header信息

//指定报⽂头【Content-type】、【User-Agent】

// httpPost.setHeader(\"Content-type\ httpPost.setHeader(\"Content-type\

httpPost.setHeader(\"User-Agent\

//执⾏请求操作，并拿到结果（同步阻塞）

CloseableHttpResponse response = client.execute(httpPost); //获取结果实体

HttpEntity entity = response.getEntity(); if (entity != null) {

//按指定编码转换结果实体为String类型

body = EntityUtils.toString(entity, encoding); }

EntityUtils.consume(entity); //释放链接

response.close(); return body; }