Unity 数据存储与读取_JSON

JSON简介

1. JSON 是纯文本

2. JSON 是一种轻量级的数据交换格式

3. JSON 具有层级结构（值中存在值）

1. 数据在键值对
2. 数据由逗号分隔
3. 花括号保存对象
4. 方括号保存数组

{
    "name" : "小李飞刀",
    "age"  : 20,
    "height" : 1.99,
    "school" : {
        “name” : “蓝鸥",
        “address” : “上海松江"
          },
    "photos" : [
        {
            "icon" : "beauty.png",
            "time" : "2017-01-01"
        },
        {
            "icon" : "nice.png",
            "time" : "2017-02-07"
        },
        {
            "icon" : "good.png",
            "time" : "2017-05-06"
        }
    ]
}

使用类库有两种：
1. System.Json（便于JSON生成）
需要将System.Json.dll放入到Assets文件夹下
2. LitJson（便于JSON解析）
需要将LitJson.dll放入到Assets文件夹下

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using LitJson;
using System.IO;
using UnityEngine.UI;
using System;

public class OpertionJson : UIHandler {
    //用于操作json数据的对象
    JsonData data = new JsonData();
    //路径
    public string filepath;
    //json格式字符串
    public string jsonStr;

    public Button SaveJsonBtn;
    public Button LoadJsonBtn;
    // Use this for initialization
    void Start () {
        data["Name"] = "夏洛克";
        data["Level"] = 20;
        data["Hp"] = 500;
        data["Attack"] = 100;
        data["Defence"] = 50;
        //将jsonData对象转成json格式字符串
        jsonStr = data.ToJson();
        
        //路径赋值
        filepath = Application.dataPath + "/shylock.json";

        SaveJsonBtn = GetByName("SaveJsonBtn").GetComponent();
        LoadJsonBtn = GetByName("LoadJsonBtn").GetComponent();

        SaveJsonBtn.onClick.AddListener(OnSaveJsonClick);
        LoadJsonBtn.onClick.AddListener(OnLoadJsonClick);



    }

    private void OnLoadJsonClick()
    {
        //流读取器
        StreamReader sr = new FileInfo(filepath).OpenText();
        //读取文本内容，直到结束
        string json = sr.ReadToEnd();
        //将json格式的字符串转换成EnemyData对象
        EnemyData enemyData = JsonMapper.ToObject(json);
        Debug.Log("读取" + enemyData.Name + enemyData.Hp + enemyData.Level);
        sr.Close();
    }

    void OnSaveJsonClick()
    {
        //保存文件
        SaveJson(jsonStr);
        print("保存" + jsonStr);

    }
    void SaveJson(string text)
    {
        //流写入器
        StreamWriter sw;
        //文件信息操作类
        FileInfo info = new FileInfo(filepath);
        //判断路径是否存在
        if (!info.Exists)
        {
            sw = info.CreateText();
        }
        else
        {
            //先删除再创建
            info.Delete();
            sw = info.CreateText();
        }

        sw.WriteLine(text);
        sw.Close();
    }
	// Update is called once per frame
	void Update ()
    {
		
	}
}

using LitJson;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;


public struct Skill
{
    public string killname;
    public string killkey;
    public int[] time;
    public int killMP;
}
public struct Nork
{
    public string Name;
    public double HP;
    public double Attack;
    public Skill[] kills;

}

public class NorkController : MonoBehaviour {

	// Use this for initialization
	void Start () {
        Nork nork_ = new Nork();
        nork_.Name = "诺克萨斯之手";
        nork_.HP = 582.24;
        nork_.Attack = 55.88;
        nork_.kills = new Skill[5];
        nork_.kills[0].killname = "出血";
        nork_.kills[0].killkey = "null";
        nork_.kills[1].killname = "大杀四方";
        nork_.kills[1].killkey = "Q";
        nork_.kills[1].time = new int[5] { 9, 8, 7, 6, 5 };
        nork_.kills[1].killMP = 30;
        nork_.kills[2].killname = "致残打击";
        nork_.kills[2].killkey = "W";
        nork_.kills[2].time = new int[5] { 9, 8, 7, 6, 5 };
        nork_.kills[2].killMP = 30;
        nork_.kills[3].killname = "无情铁手";
        nork_.kills[3].killkey = "E";
        nork_.kills[3].time = new int[5] { 24, 21, 18, 15, 12 };
        nork_.kills[4].killname = "诺克萨斯断头台";
        nork_.kills[4].killkey = "R";
        nork_.kills[4].time = new int[3] { 120, 100, 80 };
        nork_.kills[4].killMP = 100;



        string filePath = Application.dataPath + "/nork.json";
        StreamWriter streamWriter = new StreamWriter(filePath);

        string str = JsonMapper.ToJson(nork_);
        streamWriter.Write(str);
        streamWriter.Close();


    }
	
	// Update is called once per frame
	void Update () {
		
	}
}