Json一个key有多种数据类型情况的处理

描述的语言，暂且搁置。备忘。

{
	"itemList": [{
			"data": {
				"cover": {
					"feed": "http://img.kaiyanapp.com/5186fe44e2e90bb0013cc86b9808b710.png?imageMogr2/quality/60/format/jpg",
					"detail": "http://img.kaiyanapp.com/5186fe44e2e90bb0013cc86b9808b710.png?imageMogr2/quality/60/format/jpg",
					"blurred": "http://img.kaiyanapp.com/81fc3c98ac4dcbc6c955cf3b1805f051.jpeg?imageMogr2/quality/60/format/jpg",
					"sharing": null,
					"homepage": null
				}
			}
		},
		{
			"data": {
				"cover": "http://img.kaiyanapp.com/3bc8837d3320684bbc3607b82ff94761.jpeg?imageMogr2/quality/60/format/jpg"
			}
		}
	]
}

 [JsonConverter(typeof(CoverConverter))]
 public Cover cover { get; set; }

public class CoverConverter : JsonConverter
    {
        public override bool CanConvert(Type objectType) => false;

        private Cover ParseValue(JToken value)
        {
            switch (value.Type)
            {
                case JTokenType.Object:
                    return value.ToObject<Cover>();

                default:
                    return null;
            }
        }

        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
        {
            switch (reader.TokenType)
            {
                case JsonToken.StartObject:
                    return ParseValue(JToken.Load(reader));

                default:
                    return null;
            }
        }

        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
        {
            throw new NotImplementedException();
        }
    }

参考文章：Deserialize JSON-File with multiple datatypes for a key