根据 C# 中的 JSON 内容将 JSON 反序列化为不同的对象类型

Question

因此，我开发了一个由 IoT Hub 触发的 Azure Function，以便从设备接收消息。我想将它们（从设备收到的消息作为 JSON）反序列化为不同的对象类型（obs。我不允许更改消息的语法）。有没有一种方法可以根据我收到的消息反序列化为正确的对象类型？

场景一：如果消息有如下语法，那么反序列化应该是ReadResponseMessage类型。

string JsonMessageFromDevice = "{"device_id":"DeviceTest","message_id":0,"port":3,"portValue":false,"time":"2021-08-25 10:18:51","response_status":"Send"}";
ReadResponseMessage MessageReceivedType1 = JsonConvert.DeserializeObject<ReadResponseMessage>(JsonMessageFromDevice);

场景二：如果消息有如下语法，那么反序列化应该是EventMessage类型。

string JsonMessageFromDevice = "{"device_id":"DeviceTest","message_id":1501,"port1":false,"port2":false,"time":"2021-08-25 10:22:02","response_status":"OK"}";
EventMessage MessageReceivedType2 = JsonConvert.DeserializeObject<EventMessage>(JsonMessageFromDevice);

其中：

class ReadResponseMessage  {
     
      [JsonProperty("device_id")]
      public string DeviceID {get; set;}

      [JsonProperty("message_id")]
      public int MessageID {get; set;}

      [JsonProperty("port")]
      public int Port{get; set;}

      [JsonProperty("portValue")]
      public bool PortValue {get; set;}

      [JsonProperty("time")]
      public DateTime Time {get; set;}

      [JsonProperty("response_status")]
      public string ResponseStatus{get; set;}
 
}

并且：

class EventMessage {

      [JsonProperty("device_id")]
      public string DeviceID {get; set;}

      [JsonProperty("message_id")]
      public int MessageID {get; set;}

      [JsonProperty("port1")]
      public bool Port1{get; set;}

      [JsonProperty("port2")]
      public bool Port2 {get; set;}

      [JsonProperty("time")]
      public DateTime Time {get; set;}

      [JsonProperty("response_status")]
      public string ResponseStatus{get; set;}

}

Answer 1

string JsonMessageFromDevice = "{"device_id":"DeviceTest","message_id":0,"port":3,"portValue":false,"time":"2021-08-25 10:18:51","response_status":"Send"}";

var oMycustomclassname = Newtonsoft.Json.JsonConvert.DeserializeObject<dynamic>(JsonMessageFromDevice);

或

var jobject = JObject.Parse(JsonMessageFromDevice);
   var result = jobject["port"];
   if (result != null)
   {
       ReadResponseMessage readResponseMessage = jobject.ToObject<ReadResponseMessage>();
   }
   else
   {
       EventMessage eventMessage = jobject.ToObject<EventMessage>();
   }

或更改模型

class ReadResponseMessage  {
     
      [JsonProperty("device_id")]
      public string DeviceID {get; set;}

      [JsonProperty("message_id")]
      public int MessageID {get; set;}

      [JsonProperty("port")]
      public Dictionary<String,bool> Port{get; set;} // or List<string> port

      [JsonProperty("time")]
      public DateTime Time {get; set;}

      [JsonProperty("response_status")]
      public string ResponseStatus{get; set;}
 
}

根据 C# 中的 JSON 内容将 JSON 反序列化为不同的对象类型

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