词典<string, object>序列化

Question

我的数据 class 包含一些高度多样化数据的字典字段。

internal class Program
{
    public class DTO
    {
        public string Name { get; set; }
        public Dictionary<string, object> Data { get; set; }
    }

    static void Main(string[] args)
    {
        var dictSerializer = new DictionaryInterfaceImplementerSerializer<Dictionary<string, object>>(DictionaryRepresentation.Document);
        BsonClassMap.RegisterClassMap<DTO>(cm => cm.MapMember(dto => dto.Data).SetSerializer(dictSerializer));

        var instance = new DTO
        {
            Name = "test",
            Data = new Dictionary<string, object>
                {
                    {"str", "thestring"},
                    {"byte", (byte)42},
                    {"bytearray", new byte[]{ 0x1, 0x2, 0x3}}
                }
            };

        var col = new MongoClient("mongodb://localhost:27017").GetDatabase("test").GetCollection<DTO>("test");
        col.InsertOne(instance);
    }
}

我得到了：

{ 
    "_id" : ObjectId("56a9eeeacdc5b3ea38c0a522"), 
    "Data" : {
        "str" : "thestring", 
        "byte" : {
            "_t" : "System.Byte", 
            "_v" : NumberInt(42)
        }, 
        "bytearray" : {
            "_t" : "System.Byte[]", 
            "_v" : BinData(0, "AQID")
        }
    }
}

如您所见，"byte" 和 "bytearray" 字段使用鉴别符“_”和“_v”序列化。但我希望是这样的：

{ 
    "_id" : ObjectId("56a9eeeacdc5b3ea38c0a522"), 
    "Data" : {
        "str" : "thestring", 
        "byte" : 42,
        "bytearray" : BinData(0, "AQID"))
    }
}

我怎样才能做到这一点？

Answer 1

如果可以使用 Newtonsoft 对对象进行序列化和反序列化，Newtonsoft 是序列化操作的最佳解决方案。你能试试下面的代码吗？

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DictionaryTest
{
    class Program
    {
        public class DTO
        {
            public string Name { get; set; }
            public Dictionary<string, object> Data { get; set; }
        }

        static void Main(string[] args)
        {
            //var dictSerializer = new DictionaryInterfaceImplementerSerializer<Dictionary<string, object>>(DictionaryRepresentation.Document);
            //BsonClassMap.RegisterClassMap<DTO>(cm => cm.MapMember(dto => dto.Data).SetSerializer(dictSerializer));

            DTO instance = new DTO
            {
                Name = "test",
                Data = new Dictionary<string, object>
                {
                    {"str", "thestring"},
                    {"byte", (byte)42},
                    {"bytearray", new byte[]{ 0x1, 0x2, 0x3}}
                }
            };

            string serializedOne = JsonConvert.SerializeObject(instance);

            var col = new MongoClient("mongodb://localhost:27017").GetDatabase("test").GetCollection<DTO>("test");
            col.InsertOne(serializedOne);
            Console.WriteLine(serializedOne);
            Console.ReadKey();
        }
    }
}

PS：我不是MongoDB专家，我记得我曾经成功做过类似的手术。

Newtonsoft.JSON 官方页面：http://www.newtonsoft.com/json

Newtonsoft.JSON NuGet 页面：https://www.nuget.org/packages/Newtonsoft.Json/

希望对您有所帮助

词典<string, object>序列化

Dictionary<string, object> serialization

c#

mongodb

mongodb-.net-driver