Question

我遵循了Flutter Floor教程，这是我的数据库文件

import 'package:floor/floor.dart';
import 'package:news_app/database/daos/Userdao.dart';
import 'package:news_app/database/entities/User.dart';
part "AppDatabase.g.dart";


@Database(entities: [User], version: 1)
abstract class ApplicationDatabase extends FloorDatabase {
  Userdao get userDao;
}

这是我的dao文件，

import 'package:floor/floor.dart';
import 'package:news_app/database/entities/User.dart';

@dao
abstract class Userdao{

  @Query("select * from table_user")
  Future<List<User>> getUsersList();

  @insert
  Future<void> insertUser(User user);

}

这是我的实体文件，

import 'package:floor/floor.dart';

@Entity(tableName: 'table_user')
class User{

  @PrimaryKey(autoGenerate: true)
  int id;

  String name;

  String password;

  User({this.id,this.name,this.password});

}


dependencies:
  flutter:
    sdk: flutter

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^0.1.2
  fluttertoast: 3.1.3
  shared_preferences: 0.5.6
  retrofit: any
  logger: any
  dio: 3.0.8
  http: 0.12.0+4
  json_serializable: any
  floor: ^0.9.0

dev_dependencies:
  flutter_test:
    sdk: flutter
  retrofit_generator: any
  build_runner: any
  floor_generator: ^0.9.0

每当我尝试运行此命令 flutter pub run build_runner build 命令时，都会出现此错误

[INFO]正在运行构建... [INFO]经过1.7秒，完成了0/1个操作。 [警告] lib / database / ApplicationDatabase.dart上的floor_generator：floor_generator：缺少“部分'ApplicationDatabase.g.dart';”。

Answer 1

对于将来的读者，要创建database.g.dart，您必须在终端中运行以下命令，

flutter packages pub run build_runner build

或要在文件更改时自动运行它，请使用

flutter packages pub run build_runner watch

要阅读完整的程序，请访问floor documentation

Answer 2

您是否使用相同名称的数据库文件

喜欢 appdatabase.dart 和 appdatabase.g.dart

FLOOR数据库中缺少部分“ Appdatabase.g.dart”颤振

2 个答案: