1 package com.dream.quartz;
 2 
 3 import org.json.JSONObject;
 4 
 5 public class Test {
 6     public static void main(String[] args) {
 7         String str = "{\"Message\":\"OK\",\"Code\":\"OK\",\"RequestId\":\"\",\"BizId\":\"\"}";
 8         JSONObject jsonObject1=new JSONObject(str);
 9         System.out.println(jsonObject1.getString("Code"));
10     }
11 }

1 <!-- https://mvnrepository.com/artifact/org.json/json -->
2 <dependency>
3     <groupId>org.json</groupId>
4     <artifactId>json</artifactId>
5     <version>20170516</version>
6 </dependency>