C# 将动态对象从请求反序列化为强类型

我正在尝试实现API端点，该端点应该允许在请求体中使用动态对象

主体1的示例：

{
  "type": "CallStart",
  "attributes": {
      "Name": "Test",
      "Time": "09:15"
  }
}

主体2的示例：

{
  "type": "CallEnd",
  "attributes": {
      "Name": "Test",
      "SendFeedback": true
  }
}

所以，我创建了这个模型：

public class CommandRequest
{
    public CommandType Type { get; set; }
    public dynamic Attributes { get; set; }
}

然后我试着写下这样的东西

[HttpPost("id")]
public async Task<IActionResult> Commands([FromRoute] string id, [FromBody] CommandRequest requestBody)
{
    object command = null;
    switch (requestBody.Type)
    {
        case CommandType.CallStart:
            command = new Command<CallStartAttributes>
            {
                Type = requestBody.Type,
                Id = id,
                Attributes = JsonConvert.DeserializeObject<CallStartAttributes>(requestBody.Attributes)
            };
            break;
        case CommandType.CallEnd:
            command = new Command<CallEndAttributes>
            {
                Type = requestBody.Type,
                Id = id,
                Attributes = JsonConvert.DeserializeObject<CallEndAttributes>(requestBody.Attributes)
            };
            break;
        default: throw new NotImplementedException();
    }

    await _mediator.Send(command);
    return Ok();
}

对此

public string Attributes { get; set; }

---

既然反序列化对象总是需要字符串，为什么不将动态序列化为字符串呢。也许有点老套，但这是可行的：

JsonConvert.DeserializeObject<CallEndAttributes>(JsonConvert.SerializeObject(
requestBody.Attributes))

JsonConvert.DeserializeObject<CallStartAttributes>(JsonConvert.SerializeObject(
requestBody.Attributes))

JsonConvert.DeserializeObject（JsonConvert.SerializeObject(
requestBody.Attributes）
反序列化对象（JsonConvert.SerializeObject(
requestBody.Attributes）

我尝试过的问题的最小可复制代码：

using Newtonsoft.Json;
using System;
    
namespace SO
{
    public enum CommandType
    {
        CallStart, CallEnd
    }
    public class CommandRequest
    {
        public CommandType Type { get; set; }
        public dynamic Attributes { get; set; }
    }
    public class Command<TAttributes>
    {
        public string Id { get; set; }
        public CommandType Type { get; set; }
        public TAttributes Attributes { get; set; }
    }
    public class CallStartAttributes
    {
        public string Name { get; set; }
        public string Time { get; set; }
    }
    public class CallEndAttributes
    {
        public string Name { get; set; }
        public bool SendFeedback { get; set; }
    }
    class Program
    {
        static void Main(string[] args)
        {
            BuildCommand();
            Console.ReadLine();
        }

        public static void BuildCommand()
        {
            CommandRequest requestBody1 = new CommandRequest() { Type = CommandType.CallStart, Attributes = new { Name = "TestStart", Time = "some time" } };
            CommandRequest requestBody2 = new CommandRequest() { Type = CommandType.CallEnd, Attributes = new { Name = "TestEnd", SendFeedback = true } };


            var command1 = new Command<CallStartAttributes>
            {
                Id = "1",
                Type = requestBody1.Type,
                Attributes = JsonConvert.DeserializeObject<CallStartAttributes>(JsonConvert.SerializeObject(requestBody1.Attributes))
            };
            var command2 = new Command<CallEndAttributes>
            {
                Id = "2",
                Type = requestBody2.Type,
                Attributes = JsonConvert.DeserializeObject<CallEndAttributes>(JsonConvert.SerializeObject(requestBody2.Attributes))
            };

        }
    }
}

使用Newtonsoft.Json；
使用制度；
名称空间SO
{
公共枚举命令类型
{
呼叫开始，呼叫结束
}
公共类命令请求
{
公共命令类型类型{get；set；}
公共动态属性{get；set；}
}
公共类命令
{
公共字符串Id{get；set；}
公共命令类型类型{get；set；}
公共属性属性{get；set；}
}
公共类CallStartAttributes
{
公共字符串名称{get；set；}
公共字符串时间{get；set；}
}
公共类礼物
{
公共字符串名称{get；set；}
公共布尔发送反馈{get；set；}
}
班级计划
{
静态void Main（字符串[]参数）
{
BuildCommand（）；
Console.ReadLine（）；
}
公共静态void BuildCommand（）
{
CommandRequestBody1=new CommandRequest（）{Type=CommandType.CallStart，Attributes=new{Name=“TestStart”，Time=“some Time”}；
CommandRequestBody2=newCommandRequest（）{Type=CommandType.CallEnd，Attributes=new{Name=“TestEnd”，SendFeedback=true}；
var command1=新命令
{
Id=“1”，
Type=requestBody1.Type，
Attributes=JsonConvert.DeserializeObject（JsonConvert.SerializeObject（requestBody1.Attributes））
};
var command2=新命令
{
Id=“2”，
Type=requestBody2.Type，
Attributes=JsonConvert.DeserializeObject（JsonConvert.SerializeObject（requestBody2.Attributes））
};
}
}
}

您可以使用Json.Net JObject属性。检查。然后获取您要查找的特定值。

Hmm。我希望我没有对您的输入（requestBody）做出任何错误的假设。我正在发布我在回答中尝试的代码。

JsonConvert.DeserializeObject<CallEndAttributes>(JsonConvert.SerializeObject(
requestBody.Attributes))

JsonConvert.DeserializeObject<CallStartAttributes>(JsonConvert.SerializeObject(
requestBody.Attributes))

using Newtonsoft.Json;
using System;
    
namespace SO
{
    public enum CommandType
    {
        CallStart, CallEnd
    }
    public class CommandRequest
    {
        public CommandType Type { get; set; }
        public dynamic Attributes { get; set; }
    }
    public class Command<TAttributes>
    {
        public string Id { get; set; }
        public CommandType Type { get; set; }
        public TAttributes Attributes { get; set; }
    }
    public class CallStartAttributes
    {
        public string Name { get; set; }
        public string Time { get; set; }
    }
    public class CallEndAttributes
    {
        public string Name { get; set; }
        public bool SendFeedback { get; set; }
    }
    class Program
    {
        static void Main(string[] args)
        {
            BuildCommand();
            Console.ReadLine();
        }

        public static void BuildCommand()
        {
            CommandRequest requestBody1 = new CommandRequest() { Type = CommandType.CallStart, Attributes = new { Name = "TestStart", Time = "some time" } };
            CommandRequest requestBody2 = new CommandRequest() { Type = CommandType.CallEnd, Attributes = new { Name = "TestEnd", SendFeedback = true } };


            var command1 = new Command<CallStartAttributes>
            {
                Id = "1",
                Type = requestBody1.Type,
                Attributes = JsonConvert.DeserializeObject<CallStartAttributes>(JsonConvert.SerializeObject(requestBody1.Attributes))
            };
            var command2 = new Command<CallEndAttributes>
            {
                Id = "2",
                Type = requestBody2.Type,
                Attributes = JsonConvert.DeserializeObject<CallEndAttributes>(JsonConvert.SerializeObject(requestBody2.Attributes))
            };

        }
    }
}