import 'package:json_annotation/json_annotation.dart'; part 'user_info.g.dart'; // 在生成键盘出使用 @JsonSerializable() class UserInfo { @JsonKey(name: "name") String? name; @JsonKey(name: "birthday") String? birthday; @JsonKey(name: "gender") int? gender; UserInfo({ this.name, this.birthday, this.gender, }); Map toJson() => _$UserInfoToJson(this); factory UserInfo.fromJson(Map json) => _$UserInfoFromJson(json); }