Json.net自定义子对象转换器

本文关键字:对象 转换器 自定义 net Json | 更新日期: 2023-09-27 18:04:28

可能这与c# json.net自定义的子对象序列化有关。但是没有帮助……

我想在解析时将List反序列化为数据[,],但转换器不希望工作。data[,]是类的成员。我是否需要将转换器添加到JsonProperty?我真的需要两个转换器吗?

此刻我得到了这个:
反序列化多维数组时意外标记:StartObject。路径'[0]',第2行,位置3.
搜索没有帮助:/

我代码:

Program.cs

using System;
using Newtonsoft.Json;
using System.IO;
public class Program {
    static void Main(string[] args) {
        JsonSerializerSettings jss = new JsonSerializerSettings();
        jss.Converters.Add(new MyObjectJsonConverter());
        MyObject field = JsonConvert.DeserializeObject<MyObject>(File.ReadAllText("data.json").ToString(), jss);
        Console.ReadLine();
    }
}

MyObject.cs

using Newtonsoft.Json;
public class MyObject {
    [JsonProperty(PropertyName = "area", Required = Required.Always)]
    public area m_area;
    [JsonProperty(PropertyName = "datalist", Required = Required.Always)]
    public data[,] m_datalist;
}

data.cs

using Newtonsoft.Json;
    public class data {
        [JsonProperty(PropertyName = "info", Required = Required.Always)]
        public string m_info;
        [JsonProperty(PropertyName = "info2", Required = Required.Always)]
        public string m_info2;
    }

area.cs

using Newtonsoft.Json;
public class area {
    [JsonProperty(PropertyName = "x", Required = Required.Always)]
    public int m_x;
    [JsonProperty(PropertyName = "y", Required = Required.Always)]
    public int m_y;
}

和两个转换器。

MyObjectJsonConverter.cs

using System;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
public class MyObjectJsonConverter : JsonConverter {
    public override bool CanConvert(Type objectType) {
        return objectType == typeof(MyObject);
    }
    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) {
        JObject jObject = JObject.Load(reader);
        MyObject result = new MyObject();
        result.m_area = JsonConvert.DeserializeObject<area>(jObject["area"].ToString());
        JsonSerializerSettings jss = new JsonSerializerSettings();
        jss.Converters.Add(new DataListJsonConverter(result.m_area.m_x, result.m_area.m_y));
        result.m_datalist = JsonConvert.DeserializeObject<data[,]>(jObject["datalist"].ToString(), jss);
        return result;
    }
    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) {
        throw new NotImplementedException();
    }
}

DataListJsonConverter.cs

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
public class DataListJsonConverter : JsonConverter {
    private readonly int m_x;
    private readonly int m_y;
    public DataListJsonConverter(int x, int y) {
        m_x = x;
        m_y = y;
    }
    public override bool CanConvert(Type objectType) {
        return objectType == typeof(List<data>);
    }
    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) {
        JObject jObject = JObject.Load(reader);
        data[,] tilesArray = new data[m_x, m_y];
        foreach (JToken token in jObject["datalist"]) {
            data curTile = JsonConvert.DeserializeObject<data>(token.ToString());
            tilesArray[(int) token["x"], (int) token["y"]] = curTile;
        }
        return tilesArray;
    }
    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) {
        throw new NotImplementedException();
    }
}

和data.json

{
    "area": {
        "x": 10,
        "y": 10
    },
    "datalist": [
        {
            "x": 1,
            "y": 2, 
            "info": "test1",
            "info2": "test1"
        },
        {
            "x": 3,
            "y": 5, 
            "info": "test2",
            "info2": "test2"
        },
        {
            "x": 5,
            "y": 7, 
            "info": "test3",
            "info2": "test3"
        },
        {
            "x": 6,
            "y": 4, 
            "info": "test4",
            "info2": "test4"
        },
    ]
}

Json.net自定义子对象转换器

对DataListJsonConvert做一些小改动可能会达到这个效果:

更新can转换方法以检查您试图反序列化到

的内容。
public override bool CanConvert( Type objectType )
    {
        return objectType == typeof( data[,] );
    }

和在ReadJson实现中将json内容读取为JArray而不是JObject

public override object ReadJson( JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer )
    {
        JArray jArray = JArray.Load( reader );
        data[,] tilesArray = new data[m_x, m_y];
        foreach( JToken token in jArray )
        {
            data curTile = JsonConvert.DeserializeObject<data>( token.ToString() );
            tilesArray[(int) token["x"], (int) token["y"]] = curTile;
        }
        return tilesArray;
    }

,我认为这应该给你多维数组结构,你正在寻找