fastjson

import com.alibaba.fastjson.JSON;  

/**

   * 经常使用json和javabean相互转换
   * json字符串转化为JSONObject
   */
  JSONObject parseObject = JSONObject.parseObject(reqStr);
  /**
   * Json字符串转换成对应javaBean

   * 支持包含数组的Json数组
   */

      RepayTrialRequest[] repayTrilRequests = JSON.parseObject(bizContent,RepayTrialRequest[].class);
   //CalculateRequest calculateRequest = JSON.parse(parseObject.toJSONString(), CalculateRequest.class);
  /**
   * JavaBean 转换为json字符串
   */
  String jsonString = JSONObject.toJSONString(calculateRequest);

 

 

 

{

    "account_amount": 302000,

    "account_id": 1001,

    "activity_payment": 500,

    "actual_deduction": 303000,

    "balance_payment": 500,

    "repay_detail": [

        {

            "req_account_detail": [

                {

                    "amount": 200000,

                    "interest": 1000,

                    "overdue": 1000,

                    "period": 1

                },

                {

                    "amount": 100000,

                    "interest": 1000,

                    "overdue": 0,

                    "period": 2

                }

            ],

            "req_id": "201809131749070868700610"

        }

    ],

    "repay_id": "201809131749070868700680",

    "type": 1

}