Java发送POST请求，参数为JSON格式，并接收返回JSON数据

/** * 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",
"application/x-www-form-urlencoded"); httpPost.setHeader("Content-type",
"application/json"); httpPost.setHeader("User-Agent", "Mozilla/4.0 (compatible;
MSIE 5.0; Windows NT; DigExt)"); //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; }
 

原文链接：https://blog.csdn.net/daichangxia/article/details/72853267
<https://blog.csdn.net/daichangxia/article/details/72853267>

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