如何在Nest js中间件和Guard中编写逻辑

import { Injectable, NestMiddleware } from '@nestjs/common';
import { Request, Response, NextFunction } from 'express';

@Injectable()
export class LoggerMiddleware implements NestMiddleware {
  use(req: Request, res: Response, next: NextFunction) {
    console.log(`Request...`, req.method, req.url);
    next();
  }
}

import { Module, MiddlewareConsumer } from '@nestjs/common';
import { AppController } from './app.controller';
import { LoggerMiddleware } from './logger.middleware';

@Module({
  imports: [],
  controllers: [AppController],
})
export class AppModule {
  configure(consumer: MiddlewareConsumer) {
    consumer.apply(LoggerMiddleware).forRoutes('*');
  }
}

import { Injectable, CanActivate, ExecutionContext } from '@nestjs/common';

@Injectable()
export class AuthGuard implements CanActivate {
  canActivate(context: ExecutionContext): boolean {
    const request = context.switchToHttp().getRequest();
    return this.validateRequest(request);
  }

  private validateRequest(req: any): boolean {
    // 在这里编写你的验证逻辑
    return req.headers.authorization === 'Bearer valid_token';
  }
}

import { Controller, Get, UseGuards } from '@nestjs/common';
import { AuthGuard } from './auth.guard';

@Controller('protected')
export class ProtectedController {
  @Get()
  @UseGuards(AuthGuard)
  getProtectedResource() {
    return 'This is a protected resource';
  }
}