Java converts String type json to json object and extracts the corresponding value

Background: I asked for a temporary fake data for format conversion and access to other people's docking projects

1. Things are too big, simplify

json.cn
link: json.cn

is much clearer.

2. Save it in the java demo

Because many " " are used in this json, java will perform escaping, some can escape normally, and some will report an error like this

Expect ':' at 0, actual "The error of escaping failed (this is a copy problem, copy one less " or /)
can be directly compressed and escaped in the link: json.cn after reading the data and use the copy inside button
copied into java code

3. maven dependency

    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.2.47</version>
    </dependency>

4. Code

package com.ceshi;


import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

public class aa {
    
    
    public static void main(String[] args) {
    
    
        String result = "{\"filecount\":\"60\",\"filenames\":\"flowable_holiday-master.zip,jdchain-master.zip,flowable_holiday-master2.zip,flowable_holiday-master3.zip\",\"filenamesfilepath\":\"{\\\"flowable_holiday-master.zip\\\":\\\"D:/TY_DMS/原始备份区/DC-20220718714000062/001-001-002/flowable_holiday-master.zip\\\",\\\"flowable_holiday-master2.zip\\\":\\\"D:/TY_DMS/原始备份区/DC-20220718714000064/001-001-002/flowable_holiday-master2.zip\\\",\\\"flowable_holiday-master3.zip\\\":\\\"D:/TY_DMS/原始备份区/DC-20220718714000064/001-001-002/flowable_holiday-master3.zip\\\",\\\"jdchain-master.zip\\\":\\\"D:/TY_DMS/原始备份区/DC-20220718714000062/001-001-002/jdchain-master.zip\\\"}\",\"filenamesmd5\":\"{\\\"flowable_holiday-master.zip\\\":\\\"5a1cc37785764aaa4fd0c9e11fe940fc\\\",\\\"flowable_holiday-master2.zip\\\":\\\"5a1cc37785764aaa4fd0c9e11fe940fc\\\",\\\"flowable_holiday-master3.zip\\\":\\\"5a1cc37785764aaa4fd0c9e11fe940fc\\\",\\\"jdchain-master.zip\\\":\\\"f4f6a6363af4a93e717dd6197065de5b\\\"}\",\"files\":\"D:/TY_DMS/原始备份区/DC-20220718714000062/001-001-002/flowable_holiday-master.zip,D:/TY_DMS/原始备份区/DC-20220718714000064/001-001-002/flowable_holiday-master2.zip,D:/TY_DMS/原始备份区/DC-20220718714000064/001-001-002/flowable_holiday-master3.zip,D:/TY_DMS/原始备份区/DC-20220718714000062/001-001-002/jdchain-master.zip\",\"id\":\"13129224qweqweqeqe123\",\"md5\":\"3f377b490662d5d3de2c8665011f39f5\",\"pch\":\"1\",\"size\":\"1GB\",\"sl\":\"30\",\"大类\":\"文书档案\",\"小类\":\"案卷目录\",\"年度\":\"2022\",\"来源\":\"馆藏系统\",\"档号\":\"001-001-002\",\"版本号\":\"20220718164807\",\"题名\":\"xxxxx的通知\"}";
        //将String字符转为Json对象
        JSONObject jsonObject = JSON.parseObject(result);
        //获取当前嵌套下的属性
        String status = jsonObject.getString("md5");
        if (status!=null){
    
    
            System.out.println(status);
        }
//        //获取嵌套中的json串,细心观察 content为json数组，里面可放多个json对象
//        JSONArray jsonArray = jsonObject.getJSONArray("content");
//
//        //将json数组中取出一个json ，当前只有一个json组，所以下标为0
//        JSONObject jsonFirst = jsonArray.getJSONObject(0);
//
//        //取出这个json中的值
//        String yongjin_type = jsonFirst.getString("yongjin_type");
//        if (yongjin_type!=null){
    
    
//            System.out.println(yongjin_type);
//        }
    }
}