利用fastjson将json字符串转换为map对象

利用 fastjson 包将 json 字符串转换为 map 对象

json 字符串格式如下所示
{
  "one": {
    "number": "01",
    "text": "序号1"
  },
  "two": {
    "number": "02",
    "text": "序号2"
  },
  "three": {
    "number": "03",
    "text": "序号3"
  }
}
具体实现如下
  • 引入依赖包
<dependency>
  <groupId>com.alibabagroupId>
   <artifactId>fastjsonartifactId>
   <version>2.0.11.graalversion>
dependency>
  • 代码处理逻辑
package com.yuhuofei.utils;

import com.alibaba.fastjson.JSONObject;

import java.util.Map;

/**
 * @Description
 * @ClassName HandleJsonData
 * @Author yuhuofei
 * @Date 2022/8/17 21:23
 * @Version 1.0
 */
public class HandleJsonDataUtil {

    public static void jsonSwitchToMap(String data) {
        System.out.println("得到的json数据:\n" + data);
        //json转为map
        Map map = JSONObject.parseObject(data, Map.class);

        //使用entrySet方式
        for (Object entrySetOj : map.entrySet()) {
            System.out.println("使用entrySet方式得到的key是:" + ((Map.Entry) entrySetOj).getKey() + "," + "value是:" + ((Map.Entry) entrySetOj).getValue());
            JSONObject value = JSONObject.parseObject(((Map.Entry) entrySetOj).getValue().toString());
            System.out.println("number是:" + value.getString("number") + "," + "text是:" + value.getString("text"));
        }

        System.out.println();
        System.out.println("===================分隔线======================");
        System.out.println();

        //使用keySet方式
        for (Object keySetOj : map.keySet()) {
            System.out.println("使用keySet方式得到的key是:" + keySetOj + "," + "value是:" + map.get(keySetOj));
            JSONObject value = JSONObject.parseObject(map.get(keySetOj).toString());
            System.out.println("number是:" + value.getString("number") + "," + "text是:" + value.getString("text"));
        }
    }

    //测试方法
    public static void main(String[] args) {
        String jsonData = "{\n" +
                "  \"one\": {\n" +
                "    \"number\": \"01\",\n" +
                "    \"text\": \"序号1\"\n" +
                "  },\n" +
                "  \"two\": {\n" +
                "    \"number\": \"02\",\n" +
                "    \"text\": \"序号2\"\n" +
                "  },\n" +
                "  \"three\": {\n" +
                "    \"number\": \"03\",\n" +
                "    \"text\": \"序号3\"\n" +
                "  }\n" +
                "}";
        jsonSwitchToMap(jsonData);
    }
}

测试结果

利用fastjson将json字符串转换为map对象_第1张图片

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