带有继承类的颤动飞镖 JsonSerializable

Question

我有以下两个类，其中一个类是从另一个类扩展而来的：

@JsonSerializable(nullable: true)
class Response {
  final String responseCode;
  final String responseMessage;
  final String errorLog;
  Response({this.errorLog, this.responseCode, this.responseMessage});
  factory Response.fromJson(Map<String, dynamic> json) =>
      _$ResponseFromJson(json);
}

………………………………………………………………………………………………………………………………………………………… ......

 @JsonSerializable(nullable: false)
class Verify extends Response {
  Data data;
  Verify({
    this.data,
  });
  factory Verify.fromJson(Map<String, dynamic> json) => _$VerifyFromJson(json);
  Map<String, dynamic> toJson() => _$VerifyToJson(this);
}

每当我试图从验证类读取响应类属性时，总是为空

那么请如何实现这一目标？

Answer 1

我通过将参数传递给验证类构造函数中的 super 解决了这个问题，如下所示

@JsonSerializable()
class VerifyResponse extends Response {
  Data data;

  VerifyResponse({
    this.data,
    String responseCode,
    String responseMessage,
  }) : super(responseCode: responseCode, responseMessage: responseMessage);

  factory VerifyResponse.fromJson(Map<String, dynamic> json) =>
      _$VerifyResponseFromJson(json);

  Map<String, dynamic> toJson() => _$VerifyResponseToJson(this);
}

对于响应类，它保持不变

@JsonSerializable()
class Response {
  final String responseCode;
  final String responseMessage;

  Response({this.responseCode, this.responseMessage});

  factory Response.fromJson(Map<String, dynamic> json) =>
      _$ResponseFromJson(json);
}

这有点烦人，但就是这样。