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我在NodeJS应用程序中有一个接收 DTO 的服务，然后将dto其转换entity为持久性。但是当我尝试保存这个实体时，它会抛出一个错误。

我是这个 ORM 的新手，怀疑我没有正确创建实体对象。我尝试了很多谷歌搜索，但结果很奇怪，这无济于事。

async create(dto: UserDto): Promise<User> {
    console.log(dto);

    const entity = new User();
    entity.name = dto.name;
    entity.email = dto.email;
    entity.password = dto.password;
    entity.gender = dto.gender;

    console.log(entity);

    return this.userRepository.create<User>(entity);
  }

我不想使用任何类型的（自动）映射器。我想手动但正确地执行此操作。

---------- DTO 值------------

{
  name: 'jon travolta',
  password: '$2b$10$69BOeoRUAF2cyObIsmeMSeepYVC3E.hm1xauCGysgHL/SNl57xDlS',
  email: 'jon@travolta.com',
  gender: 'male'
}

----------实体值------------

User {
  dataValues: {
    id: null,
    name: 'jon travolta',
    email: 'jon@travolta.com',
    password: '$2b$10$69BOeoRUAF2cyObIsmeMSeepYVC3E.hm1xauCGysgHL/SNl57xDlS',
    gender: 'male'
  },
  _previousDataValues: {
    name: undefined,
    email: undefined,
    password: undefined,
    gender: undefined
  },
  _changed: Set(4) { 'name', 'email', 'password', 'gender' },
  _options: { isNewRecord: true, _schema: null, _schemaDelimiter: '' },
  isNewRecord: true
}

-----------------控制台错误----------------

[Nest] 27380   - 06/19/2021, 4:29:59 PM   [ExceptionsHandler] notNull Violation: User.name cannot be null,
notNull Violation: User.email cannot be null,
notNull Violation: User.password cannot be null,
notNull Violation: User.gender cannot be null +10917ms
SequelizeValidationError: notNull Violation: User.name cannot be null,
notNull Violation: User.email cannot be null,
notNull Violation: User.password cannot be null,
notNull Violation: User.gender cannot be null
    at InstanceValidator._validate (D:\code\nodejs\blog-api\node_modules\sequelize\lib\instance-validator.js:78:13)
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