C#如何实现读取写入Json文件_c# json 读写

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/// <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;

}

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  //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);

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[

  {

    "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

  }

]

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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}";

        }