Unity序列化和反序列化对象Json

Unity中要导入litjson

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

[System.Serializable]
public class PassConfig
{
    public List<PassInfo> passInfo = new List<PassInfo>();
    public PassProp passProp = new PassProp();
}

[System.Serializable]
public class PassInfo
{
    //等级
    public int Id;

    //关卡名字
    public string Name;

    public PassProp passProp;
}

[System.Serializable]
public class PassProp
{
    //道具ID
    public int ID;
    public string PropName;
}

public class JsonSerializeTest : MonoBehaviour
{
    private string jsonDir;
    private string jsonFileName = "Mekey.json";

    private string jsonPath;

    /// <summary>
    ///面板观察反序列化对象数据
    /// </summary>
    public PassConfig _passConfig;

    void Start()
    {
        jsonDir = Application.persistentDataPath + "/JsonDir";
        jsonPath = jsonDir + "/" + jsonFileName;
        PassConfig passConfig = new PassConfig();
        passConfig.passInfo = new List<PassInfo>();

        for (int i = 0; i < 5; i++)
        {
            PassInfo passInfo = new PassInfo();
            passInfo.passProp = new PassProp();
            passInfo.passProp.ID = i * 50;
            passInfo.passProp.PropName = "MeKey" + i * 100;
            passInfo.Id = i;
            passInfo.Name = "MeKey   ->  " + i;
            passConfig.passInfo.Add(passInfo);
        }

        passConfig.passProp.ID = 50000;
        passConfig.passProp.PropName = "MeKey+++++++50000";

        SaveJson(passConfig);
        LoadJson();
    }


    /// <summary>
    /// 保存数据
    /// </summary>
    /// <param name="passConfig"></param>
    public void SaveJson(PassConfig passConfig)
    {
        if (!Directory.Exists(jsonDir))
        {
            Directory.CreateDirectory(jsonDir);
        }

        if (!File.Exists(jsonPath))
        {
            //如果第一次创建并且写入文件 要Dispose
            File.Create(jsonPath).Dispose();
        }

        string json = JsonMapper.ToJson(passConfig);
        StreamWriter sw = new StreamWriter(jsonPath);
        sw.Write(json);
        sw.Close();
#if UNITY_EDITOR //打开本地沙盒路径
        Debug.Log("创建文件成功，路径：--->" + jsonDir);
        System.Diagnostics.Process.Start(jsonDir);
#endif
    }


    /// <summary>
    /// 读取保存数据的方法
    /// </summary>
    public void LoadJson()
    {
        if (!File.Exists(jsonPath))
        {
            Debug.LogError("不存在此文件");
            return;
        }
        StreamReader streamReader = new StreamReader(jsonPath);
        string json = streamReader.ReadToEnd();
        streamReader.Close();
        _passConfig = JsonMapper.ToObject<PassConfig>(json);
        Debug.Log("读取成功");
    }
}