测试了一下Unity5.3自己带的json，不错

TestJson

using UnityEngine;using System.Collections;public class TestJson : MonoBehaviour {// Use this for initializationpublic MyClass myObject = new MyClass();public MyClass myObjectRead = new MyClass();[System.Serializable]public class MyClass{public int level;public float timeElapsed;public string playerName;}void Start () {myObject.level = 1;myObject.timeElapsed = 47.5f;myObject.playerName = "Dr Charles Francis";string json = JsonUtility.ToJson(myObject);print ("" + json);myObjectRead = JsonUtility.FromJson<MyClass> (json);}// Update is called once per framevoid Update () {}}

感觉挺好用的，支持unity