c# unity 读取配置json文件

　　using System;
　　using LitJson;

　　string configStr;
　　void Start()
    {
    　　ArrayList info = LoadFile(Application.dataPath,"config1.txt");

        foreach (string strs in info)
        {
            configStr += strs;
        }  

        //        string str = @"
        //            {
        //                ""Speed""      : 2
        //            }";

        JsonData jd = JsonMapper.ToObject(configStr);

    　　speed = (int)jd["Speed"];//2
    }

    ArrayList LoadFile(string path,string name)
    {
        StreamReader sr = null;
        try{
            string filePath=path+"//"+name;
            if (File.Exists(filePath))
            {
                sr = File.OpenText(path + "//" + name);
            }
            else
            {
                return null;
            }
        }
        catch(Exception e)
        {
            return null;
        }
        string line;
        ArrayList arrList = new ArrayList();
        while((line = sr.ReadLine()) != null)
        {
            arrList.Add(line);
        }
        sr.Close();
        sr.Dispose();
        return arrList;
    }          

　　public void ResolveJson()
    {
         string str = @"
            {
                ""Name""     : ""yusong"",
                ""Age""      : 26,
                ""Birthday"" : ""1986-11-21"",
                 ""Thumbnail"":[
                {
                       ""Url"":    ""http://xuanyusong.com"",
                       ""Height"": 256,
                       ""Width"":  ""200""
                },
                {
                       ""Url"":    ""http://baidu.com"",
                       ""Height"": 1024,
                       ""Width"":  ""500""
                }

                ]
            }";

        JsonData jd = JsonMapper.ToObject(str);
        Debug.Log("name = " + (string)jd["Name"]);
        Debug.Log("Age = " + (int)jd["Age"]);
        Debug.Log("Birthday = " + (string)jd["Birthday"]);
        JsonData jdItems = jd["Thumbnail"]; 

        for (int i = 0; i < jdItems.Count; i++)
        {
            Debug.Log("URL = " + jdItems[i]["Url"]);
            Debug.Log("Height = " + (int)jdItems[i]["Height"]);
            Debug.Log("Width = " + jdItems[i]["Width"]);
        }
    }