java中对json的相关操作

//调用接口获取json串
String clauseResult = HttpClientUtil.httpGetJSON(url, paraMap, headers);
//String -> jsonObject
JSONObject jsonObject = JSONObject.parseObject(clauseResult);
//获取指定字段
String data = jsonObject.getString("data")


//json字符串转java对象
User  user =JSON.parseObject(json,User.class);