json字符串轉map、json數組演示

公司項目用的IBM封裝的json解析，此處采用阿里的fastjson進行演示，代碼如下：

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字符串轉json數組
     * @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);
        // 遍歷打印
        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轉map
        Map map = (Map) JSON.parse(jsonStr);
        System.out.println("map的value類型：" + map.get("OPERATION").getClass());
        JSONArray jsonArray = (JSONArray) map.get("OPERATION");
        printMethod(jsonArray);
    }

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

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