参考 public override object ReadJsonJsonReader reader Type objectType object existingValue JsonSerializer serializer if readerTokenType == JsonTokenInteger return reade

public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
    if (value is string)
    {
        writer.WriteValue(value);
    }
    else if (value is int)
    {
        writer.WriteValue((int)value);
    }
    else
    {
        throw new JsonSerializationException($"Unexpected value type '{value.GetType()}'");
    }
}