如何在nestJs中使用passport本地策略对多个实体进行身份验证？

npm install --save @nestjs/passport passport passport-local

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

@Injectable()
export class LocalStrategy extends PassportStrategy(Strategy) {
  constructor(private authService: AuthService) {
    super();
  }

  async validate(username: string, password: string): Promise<any> {
    const user = await this.authService.validateUser(username, password);
    if (!user) {
      throw new UnauthorizedException();
    }
    return user;
  }
}

import { Injectable } from '@nestjs/common';

@Injectable()
export class AuthService {
  async validateUser(username: string, password: string): Promise<any> {
    // 在这里进行用户身份验证的逻辑，可以根据需要查询数据库或其他方式验证用户信息
    // 如果验证成功，返回用户对象；如果验证失败，返回null或抛出异常
  }
}

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

@Controller('auth')
export class AuthController {
  @Post('login')
  @UseGuards(AuthGuard('local'))
  async login(@Request() req) {
    // 在这里处理登录逻辑
    return req.user;
  }
}