json字符串转map、json数组演示

公司项目用的IBM封装的json解析，此处采用阿里的fastjson进行演示，代码如下：

 package com.alphajuns.test;

 import com.alibaba.fastjson.JSON;
 import com.alibaba.fastjson.JSONArray;
 import com.alibaba.fastjson.JSONObject;
 import org.junit.Test;

 import java.util.Map;

 /**
  * @ClassName JsonToMapTest
  * @Description
  * @Author AlphaJunS
  * @Date 2019/10/23 22:34
  * @Version V1.0
  **/
 public class JsonToMapTest {

     /**
      * @description json字符串转json数组
      * @author AlphaJunS
      * @date 2019/10/23
      * @param []
      * @return void
      */
     @Test
     public void run3() {
         // json字符串
         String jsonStr = "[{\"ID\":\"SX5-1001432\",\"PROCESSID\":\"OP2080\"}, "
                 + "{\"ID\":\"SX5-1601110\",\"PROCESSID\":\"OP2150\"}, "
                 + "{\"ID\":\"X03004-1023111\",\"PROCESSID\":\"OP1140\"}, "
                 + "{\"ID\":\"X03004-1003012\",\"PROCESSID\":\"GOP260\"}, "
                 + "{\"ID\":\"7903075118\",\"PROCESSID\":\"GOP260\"},{\"ID\":\"13MA-11011\"}]";
         JSONArray jsonArray = JSON.parseArray(jsonStr);
         // 遍历打印
         printMethod(jsonArray);
     }

     /**
      * @description
      * @author AlphaJunS
      * @date 2019/10/23
      * @param []
      * @return void
      */
     @Test
     public void run2() {
         // json字符串
         String jsonStr = "{\"OPERATION\":[{\"ID\":\"SX5-1001432\",\"PROCESSID\":\"OP2080\"}, "
                 + "{\"ID\":\"SX5-1601110\",\"PROCESSID\":\"OP2150\"}, "
                 + "{\"ID\":\"X03004-1023111\",\"PROCESSID\":\"OP1140\"}, "
                 + "{\"ID\":\"X03004-1003012\",\"PROCESSID\":\"GOP260\"}, "
                 + "{\"ID\":\"7903075118\",\"PROCESSID\":\"GOP260\"},{\"ID\":\"13MA-11011\"}]}";

         // json转map
         Map map = (Map) JSON.parse(jsonStr);
         System.out.println("map的value类型：" + map.get("OPERATION").getClass());
         JSONArray jsonArray = (JSONArray) map.get("OPERATION");
         printMethod(jsonArray);
     }

     /**
      * @description json字符串转map
      * @author AlphaJunS
      * @date 2019/10/23
      * @param []
      * @return void
      */
     @Test
     public void run1() {
         String jsonStr= "{\"OPERATION\":{\"ID\":\"SX5-1001432\",\"PROCESSID\":\"OP2080\"}}";
         // json转map
         Map map = (Map) JSON.parse(jsonStr);
         System.out.println("map的value类型：" + map.get("OPERATION").getClass());
         JSONObject jsonObject = (JSONObject) map.get("OPERATION");
         System.out.println("ID:" + jsonObject.get("ID") + ",PROCESSID:" + jsonObject.get("PROCESSID"));
     }

     /**
      * @description 遍历json数组打印
      * @author AlphaJunS
      * @date 2019/10/23
      * @param [jsonArray]
      * @return void
      */
     public void printMethod(JSONArray jsonArray) {
         // 遍历json数组
         for (int i = 0; i < jsonArray.size(); i++) {
             JSONObject jsonObject = (JSONObject) jsonArray.get(i);
             System.out.println("第" + (i + 1) + "个对象：");
             System.out.println("ID:" + jsonObject.get("ID") + ",PROCESSID:" + jsonObject.get("PROCESSID"));
         }
     }
 }