public enum SKUTypes
{
///
/// 普通，SKU 的价格直接体现在 SKU 中
///
Normal = 0,
///
/// 日历类型，SKU 的价格需要从日历价格接口中取
///
Daily = 1,
///
/// 需要选择日期的, 比如酒店, 需要选择日期才能查价格
///
ChoiceDate = 2
}
[JsonConverter(typeof(SKUConverter))]
public abstract class BaseSKU
{
///
/// 是否是日历类型的 SKU
///
public abstract SKUTypes SKUType { get; }
...
...
public class SKU : BaseSKU
{
///
///
///
public override SKUTypes SKUType => SKUTypes.Normal;
...
...
public class DailySKU : BaseSKU
{
///
///
///
public override SKUTypes SKUType => SKUTypes.Daily;
...
...
public class SKUConverter : JsonConverter
{
///
///
///
///
///
///
///
public override BaseSKU Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
//reader 是 struct , 如果直接用 reader 的话, 会因为位置已改变, 下面的 Deserializer 报错
var tmpReader = reader;
var detect = JsonSerializer.Deserialize(ref tmpReader, options);
return detect.SKUType switch
{
SKUTypes.Daily => (BaseSKU)JsonSerializer.Deserialize(ref reader, typeof(DailySKU), options),
SKUTypes.Normal => (BaseSKU)JsonSerializer.Deserialize(ref reader, typeof(SKU), options),
SKUTypes.ChoiceDate => (BaseSKU)JsonSerializer.Deserialize(ref reader, typeof(HotelSKU), options),
_ => throw new NotSupportedException($"SKUType:{detect.SKUType}"),
};
}
///
///
///
///
///
///
public override void Write(Utf8JsonWriter writer, BaseSKU value, JsonSerializerOptions options)
{
JsonSerializer.Serialize(writer, value, value?.GetType() ?? typeof(object), options);
}
///
///
///
private class TypeDetectSKU : BaseSKU
{
///
///
///
[JsonPropertyName("SKUType")]
public SKUTypes _SKUType { get; set; }
///
///
///
[JsonIgnore]
public override SKUTypes SKUType => this._SKUType;
}
}
