C#实现读取写入Json文件

    /// <summary>
    /// 将序列化的json字符串内容写入Json文件，并且保存
    /// </summary>
    /// <param name="path">路径</param>
    /// <param name="jsonConents">Json内容</param>
    private void WriteJsonFile(string path, string jsonConents)
    {
        File.WriteAllText(path, jsonConents, System.Text.Encoding.UTF8);
    }

    /// <summary>
    /// 获取到本地的Json文件并且解析返回对应的json字符串
    /// </summary>
    /// <param name="filepath">文件路径</param>
    /// <returns></returns>
    private string GetJsonFile(string filepath)
    {
        string json = string.Empty;
        using (FileStream fs = new FileStream(filepath, FileMode.OpenOrCreate, System.io.FileAccess.ReadWrite, FileShare.ReadWrite))
        {
            using (StreamReader sr = new StreamReader(fs, Encoding.UTF8))
            {
                json = sr.ReadToEnd().ToString();
            }
        }
        return json;
    }
    /// <summary>
    /// 对象 转换为Json字符串
    /// </summary>
    /// <param name="tablelList"></param>
    /// <returns></returns>
    public string toJson(object tablelList)
    {
        DataContractJsonSerializer json = new DataContractJsonSerializer(tablelList.GetType());
        string finJson = "";
        //序列化
        using (MemoryStream stream = new MemoryStream())
        {
            json.WriteObject(stream, tablelList);
            finJson = Encoding.UTF8.GetString(stream.ToArray());

        }
        Debug.Log(tablelList + "JSON数据为:" + finJson);
        return finJson;
    }

  //需要写入Json文件中的数据集合
  List<MonsterSpawnPoint> MonsterPos = new List<MonsterSpawnPoint>();
  //转为string 字符串
    string text = toJson(MonsterPos);
    //写入Json文件  filepath文件路径 
    string filepath=Path.Combine(Application.dataPath, "../", "Config_NPC.json");
       WriteJsonFile(filepath, text);

[
  {
    "Direction": 0,
    "Index": 9,
    "PositionX": 28,
    "PositionY": 10,
    "PositionZ": 20
  },
  {
    "Direction": 0,
    "Index": 9,
    "PositionX": 40,
    "PositionY": 10,
    "PositionZ": 18
  },
  {
    "Direction": 0,
    "Index": 4,
    "PositionX": 21,
    "PositionY": 10,
    "PositionZ": -8
  },
  {
    "Direction": 0,
    "Index": 4,
    "PositionX": 40,
    "PositionY": 10,
    "PositionZ": -13
  }
]

public class MonsterSpawnPoint 
{
    public long Index;//怪物索引 
    public int PositionX;//怪物X坐标
    public int PositionY;//怪物Y坐标
    public int PositionZ;//怪物Z坐标
    public int Direction;
}
//读取指定数据集合Json
  MonsterSpawnPoint[] monsterPoints = LitJson.JsonMapper.ToObject<MonsterSpawnPoint[]>(GetJsonFile(filepath));
  //读取Json 通过字符串 索引取得Json表中的值
  LitJson.JsonData jsonData = LitJson.JsonMapper.ToObject(GetJsonFile(fillePath));
   foreach (JsonData item in jsonData)
        {
            JsonData id_data = item["Id"];//通过字符串 索引取得键值对的值
            JsonData name_data = type == InitType.Monster ? item["Name"] : item["NPCName"];//通过字符串 索引取得键值对的值
            tempData = new Dropdown.OptionData();
            tempData.text = $"[{id_data}]{name_data}";
        
        }