com.alibaba.fastjson

测试用例

package test;

import java.util.Iterator;

import org.junit.Test;

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

public class FastJsonDemo {
   
   @Test
   public void testFastJson() {
       // json格式的字符串
       String jsonStr = "{\r\n" + "\"name\":\"jarWorker\",\r\n" + "\"sex\":\"男\",\r\n" + "\"age\":26,\r\n"
               + "\"love\":[{\"hobby\":\"足球\",\"color\":\"White\"},{\"hobby\":\"篮球\",\"color\":\"Brown\"},{\"hobby\":\"简书\",\"color\":\"Yellow\"}],\r\n"
               + "\"goodAt\":\"Java\"\r\n" + "}";

       Object jsonObj = JSON.toJSON(jsonStr);
       System.out.println("toJSON>>>" + jsonObj);
       System.out.println("——————————————————————————————————");
       Object jsonParse = JSON.parse(jsonStr);
       System.out.println("parse>>>" + jsonParse);
       System.out.println("——————————————————————————————————");
       String jsonString = JSON.toJSONString(jsonStr);
       System.out.println("jsonString>>>" + jsonString);
       System.out.println("——————————————————————————————————");

       JSONObject jsonObject = JSON.parseObject(jsonStr);// json对象
       String name = jsonObject.getString("name");
       String sex = jsonObject.getString("sex");
       String age = jsonObject.getString("age");
       String goodAt = jsonObject.getString("goodAt");

       System.out.println("name====" + name);
       System.out.println("sex====" + sex);
       System.out.println("age====" + age);
       System.out.println("goodAt====" + goodAt);

       String love = jsonObject.getString("love");
       JSONArray jsonArray = JSON.parseArray(love);// json数组对象
       String ArrayStr=JSONArray.toJSONString(jsonArray);
       System.out.println("ArrayStr====" + ArrayStr);
       System.out.println("——————————————————————————————————");
       int count = 0;// 测试用
       Iterator<Object> it = jsonArray.iterator();// 使用Iterator迭代器
       while (it.hasNext()) {
           // 遍历数组
           JSONObject arrayObj = (JSONObject) it.next();// JSONArray中是很多个JSONObject对象
           String hobby = arrayObj.getString("hobby");
           String color = arrayObj.getString("color");
           count++;
           System.out.println("hobby>>>" + hobby);
           System.out.println("color>>>" + color);
           System.out.println("------------------------------------");
       }
       System.out.println("数组中的JSONObject个数：" + count);
   }
}

Console:输出

toJSON>>>{
"name":"jarWorker",
"sex":"男",
"age":26,
"love":[{"hobby":"足球","color":"White"},{"hobby":"篮球","color":"Brown"},{"hobby":"简书","color":"Yellow"}],
"goodAt":"Java"
}
——————————————————————————————————
parse>>>{"love":[{"color":"White","hobby":"足球"},{"color":"Brown","hobby":"篮球"},{"color":"Yellow","hobby":"简书"}],"goodAt":"Java","sex":"男","name":"jarWorker","age":26}
——————————————————————————————————
jsonString>>>"{\r\n\"name\":\"jarWorker\",\r\n\"sex\":\"男\",\r\n\"age\":26,\r\n\"love\":[{\"hobby\":\"足球\",\"color\":\"White\"},{\"hobby\":\"篮球\",\"color\":\"Brown\"},{\"hobby\":\"简书\",\"color\":\"Yellow\"}],\r\n\"goodAt\":\"Java\"\r\n}"
——————————————————————————————————
name====jarWorker
sex====男
age====26
goodAt====Java
ArrayStr====[{"color":"White","hobby":"足球"},{"color":"Brown","hobby":"篮球"},{"color":"Yellow","hobby":"简书"}]
——————————————————————————————————
hobby>>>足球
color>>>White
===========================
hobby>>>篮球
color>>>Brown
===========================
hobby>>>简书
color>>>Yellow
===========================
数组中的JSONObject个数：3