JSON反序列化接口的问题

今天在使用JSON序列化类时出现问题，原来类中有一个接口，在反序列化时不知道接口的实体是什么

public class Device : IComparer {         private string _deviceid;         private string _devicename;         private string _deviceaddr = “01”;         private string _friendlyname;         private string _devdescription;         private IBus _CommBus;         /// <summary>         /// 通信接口         /// </summary>         public IBus BusConnector         {             get { return _CommBus; }             set { _CommBus = value; }         }         /// <summary>         /// 设备编号-唯一性         /// </summary>         public string DeviceId         {             set { _deviceid = value; }             get { return _deviceid; }         }         /// <summary>         /// 设备名称         /// </summary>         public string DeviceName         {             set { _devicename = value; }             get { return _devicename; }         }         /// <summary>         /// 设备通信地址         /// </summary>         public string DeviceAddr         {             set { _deviceaddr = value; }             get { return _deviceaddr; }         }         /// <summary>         /// 发送指令到设备         /// </summary>         /// <param name=”send”></param>         public virtual bool SendCmd(byte[] sendbytes)         {             return true;         }         public virtual bool DevOpen()         {             return _CommBus.Open();         }         #region 实现IComparer接口，按设备ID排序         public int Compare(object x, object y)         {             if ((x is Device) && (y is Device))             {                 Device a = (Device)x;                 Device b = (Device)y;                 return a._deviceid.CompareTo(b._deviceid);             }             return 0;         }         #endregion End     }

 Device类中，BusConnector为一通信接口，根据需要传入不同的通信方式实体，，正常反序列化时出现

“Type is an interface or abstract class and cannot be instantiated” 这样的错误

 方法一：在序列化时增加对应的说明

var settings = new JsonSerializerSettings();
settings.TypeNameHandling = TypeNameHandling.Objects;
JsonConvert.SerializeObject(entity, Formatting.Indented, settings);

 方法二：增加转化类

public class Model
{
[JsonConverter(typeof(ConcreteTypeConverter<Something>))]
public ISomething TheThing { get; set; }
}

public class ConcreteTypeConverter<TConcrete> : JsonConverter 
{ 
public override bool CanConvert(Type objectType) 
{ //assume we can convert to anything for now 
 return true; 
} 
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) 
 { //explicitly specify the concrete type we want to create
 return serializer.Deserialize<TConcrete>(reader);
 }
 public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
 { //use the default serialization - it works fine serializer.Serialize(writer, value);
 } 
}



  
 方法三：直接使用JSON.NET上的在属性上增加
 

         [JsonProperty(TypeNameHandling = TypeNameHandling.Auto)]  
 
          /// <summary>           /// 通信接口           /// </summary>           public IBus BusConnector           {               get { return _CommBus; }               set { _CommBus = value; }           }  
这三种方法者有可实现性，其中方法三最方便，方法一可以实现，但每个对象之前增加对象类型。
解决方法参考：https://stackoverflow.com/questions/2254872/using-json-net-converters-to-deserialize-properties 
 https://stackoverflow.com/questions/8030538/how-to-implement-custom-jsonconverter-in-json-net-to-deserialize-a-list-of-base/8031283#8031283