Typescript 无法读取属性'；validateUser'；对于未定义的，使用PassportJS的NestJS

我只想在NestJS中通过passportjs实现身份验证。 当我向“localhost:3000/auth/login”发送post请求时，出现了以下几行错误

这是我的代码：

local.strategy.ts

import { AuthService } from './auth.service';
import { PassportStrategy } from '@nestjs/passport';
import { Strategy } from 'passport-local';
import { UnauthorizedException } from '@nestjs/common';

export class LocalStrategy extends PassportStrategy(Strategy) {
  constructor(private authService: AuthService) {
    super();
  }
  async validate(username: string, password: string): Promise<any> {
    console.log(username, password);
    const user = await this.authService.validateUser(username, password); <====This part
    if (!user) {
      return new UnauthorizedException();
    }
    return user;
  }
}

app.module.ts

import { LocalStrategy } from './local.strategy';
import { Module } from '@nestjs/common';
import { PassportModule } from '@nestjs/passport';
import { AuthService } from './auth.service';

@Module({
  imports: [PassportModule],
  providers: [AuthService, LocalStrategy],
  exports: [PassportModule],
})
export class AuthModule {}

import { Contact } from './contacts/contacts.entity';
import { TypeOrmModule } from '@nestjs/typeorm';
import { Module } from '@nestjs/common';
import { ContactsModule } from './contacts/contacts.module';
import { AppController } from './app.controller';
import { AuthModule } from './auth/auth.module';
import { PassportModule } from '@nestjs/passport';

@Module({
  imports: [
    ContactsModule,
    PassportModule,
    TypeOrmModule.forRoot({ entities: [Contact] }),
    AuthModule,
  ],
  controllers: [AppController],
  providers: [],
})
export class AppModule {}

app.controller.ts

import { Controller, Post, UseGuards, Request } from '@nestjs/common';
import { AuthGuard } from '@nestjs/passport';

@Controller()
export class AppController {
  @UseGuards(AuthGuard('local'))
  @Post('auth/login')
  public async login(@Request() req): Promise<any> {
    return req.user;
  }
}

从'@nestjs/common'导入{Controller，Post，UseGuards，Request}；
从'@nestjs/passport'导入{AuthGuard}；
@控制器（）
导出类AppController{
@UseGuard（AuthGuard（'local'））
@Post（'auth/login'）
公共异步登录（@Request（）req）：承诺{
返回请求用户；
}
}

我通过依赖项注入注入了authservice，但我得到了一个错误。 如何修复此问题？

将

@Injectable（）

添加到

LocalStrategy

类。

将

@Injectable（）

添加到

LocalStrategy

类

import { Contact } from './contacts/contacts.entity';
import { TypeOrmModule } from '@nestjs/typeorm';
import { Module } from '@nestjs/common';
import { ContactsModule } from './contacts/contacts.module';
import { AppController } from './app.controller';
import { AuthModule } from './auth/auth.module';
import { PassportModule } from '@nestjs/passport';

@Module({
  imports: [
    ContactsModule,
    PassportModule,
    TypeOrmModule.forRoot({ entities: [Contact] }),
    AuthModule,
  ],
  controllers: [AppController],
  providers: [],
})
export class AppModule {}

import { Controller, Post, UseGuards, Request } from '@nestjs/common';
import { AuthGuard } from '@nestjs/passport';

@Controller()
export class AppController {
  @UseGuards(AuthGuard('local'))
  @Post('auth/login')
  public async login(@Request() req): Promise<any> {
    return req.user;
  }
}