Csharp 如何反序列化 JSON 响应，其中 null 关键字替换为 false

使用这个简单的转换器:

public class FalseToNullConverter : JsonConverter
{
    public override bool CanConvert(Type objectType) => true;

    public override object? ReadJson(JsonReader reader, Type objectType, object? existingValue, JsonSerializer serializer)
        => reader.TokenType != JsonToken.Boolean || reader.Value is not false 
            ? serializer.Deserialize(reader, objectType)
            : null;

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

您可以在您的POCO类中修饰那些需要被视为可空字段的属性，例如

public class OdooResult
{
    public int id { get; set; }

    [JsonConverter(typeof(FalseToNullConverter))]
    public int? campaign_id { get; set; }

    [JsonConverter(typeof(FalseToNullConverter))]
    public Guid? source_id { get; set; }

    [JsonConverter(typeof(FalseToNullConverter))]
    public long? medium_id { get; set; }

    public List<object> activity_ids { get; set; }

    public bool activity_state { get; set; }

    [JsonConverter(typeof(FalseToNullConverter))]
    public int? activity_user_id { get; set; }

    [JsonConverter(typeof(FalseToNullConverter))]
    public int? activity_type_id { get; set; }

    public bool activity_type_icon { get; set; }

    [JsonConverter(typeof(FalseToNullConverter))]
    public DateTime? activity_date_deadline { get; set; }

    [JsonConverter(typeof(FalseToNullConverter))]
    public DateTime? my_activity_date_deadline { get; set; }

    public bool activity_summary { get; set; }

    public bool activity_exception_decoration { get; set; }

    public bool activity_exception_icon { get; set; }

    public bool activity_calendar_event_id { get; set; }
}

已知限制

如果您收到true，例如campaign_id，那么它将被反序列化为1.根据您的需求，这需要有不同的处理方式.