package com.alibaba.fastjson;

import java.util.Date;

import java.util.List;

import com.alibaba.fastjson.componet.Grade;

import com.alibaba.fastjson.componet.User;

import com.alibaba.fastjson.serializer.SerializerFeature;

/**

 * @author Liang

 *

 *         2017年2月27日

 */

public class JSONObject_ {

    public static void main(String[] args) {

        User lime = new User(1, "lime", 23d);

        User oracle = new User(2, "oracle", 25d);

        Grade grade = new Grade("铃兰一中", lime, oracle);

        // 将JavaBean序列化为JSON文本

        String limeJson = JSONObject.toJSONString(lime);

//        {"id":1,"name":"lime","treasure":23}

        String usersJson = JSONObject.toJSONString(grade.getUsers());

//        [{"id":1,"name":"lime","treasure":23},{"id":2,"name":"oracle","treasure":25}]

        String gradeJson = JSONObject.toJSONString(grade);

//        {"name":"铃兰一中","users":[{"id":1,"name":"lime","treasure":23},{"id":2,"name":"oracle","treasure":25}]}

        // JSONObject 其实就是一个Map。

        JSONObject limeParse = JSONObject.parseObject(limeJson);

        System.out.println(limeParse);

//        {"id":1,"name":"lime","treasure":23}

        System.out.println(limeParse.getInteger("id"));

//

        System.out.println(limeParse.getIntValue("id"));

//

        System.out.println(limeParse.getString("name"));

//        lime

        JSONObject gradeParse = JSONObject.parseObject(gradeJson);

        System.out.println(gradeParse);

//        {"name":"铃兰一中","users":[{"id":1,"name":"lime","treasure":23},{"id":2,"name":"oracle","treasure":25}]}

        System.out.println(gradeParse.get("users"));

//        [{"id":1,"name":"lime","treasure":23},{"id":2,"name":"oracle","treasure":25}]

        // JSONArray 其实就是一个List

        List<User> gradeUsersParse = JSONObject.parseArray(gradeParse.get("users").toString(), User.class);

        for(User user : gradeUsersParse){

            System.out.println(user);

            // User [id=1, name=lime, treasure=23.0]

            // User [id=2, name=oracle, treasure=25.0]

        }

//        key-value使用单引号

        String limeJSON = JSONObject.toJSONString(lime,

                SerializerFeature.UseSingleQuotes);

//        {'id':1,'name':'lime','treasure':23}

        // 日期格式化

        Date date = new Date();

        // 默认格式为yyyy-MM-dd HH:mm:ss

        System.out.println(JSON.toJSONString(date,

                SerializerFeature.WriteDateUseDateFormat));

        //根据自定义格式输出日期

        System.out.println(JSON.toJSONStringWithDateFormat(date, "yyyy-MM-dd", SerializerFeature.WriteDateUseDateFormat));

    }

}