Nest.js 添加中间件

最新推荐文章于 2024-12-28 21:07:39 发布

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最新推荐文章于 2024-12-28 21:07:39 发布

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/ajanuw/p/9572917.html

本文介绍了如何在NestJS中实现和应用中间件，包括创建Logger中间件、全局中间件配置及不同版本间的差异等内容。

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Docs: https://docs.nestjs.com/middleware

创建中间件 logger.middleware.ts

import { Injectable, NestMiddleware, MiddlewareFunction } from '@nestjs/common'

@Injectable()
export class LoggerMiddleware implements NestMiddleware {
  resolve(...args: any[]): MiddlewareFunction {
    return (req, res, next) => {
      console.log('收到请求：');
      next();
    }
  }
}

使用中间件 app.module.ts

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

@Module({
  imports: [],
  controllers: [AppController],
  providers: [AppService],
})
export class AppModule implements NestModule {
  configure(consumer: MiddlewareConsumer) {
    consumer
      .apply(LoggerMiddleware)
      .forRoutes({
        path: '*',
        method: RequestMethod.ALL, 
      })
  }
}

函数中间件

export function logger(req, res, next) {
  console.log(`Request...`);
  next();
};

---

configure(consumer: MiddlewareConsumer) {
    consumer
      .apply(logger)
      .forRoutes(CatsController);
  }

全局使用

function logger(req, res, next) {
  console.log('收到请求');
  next();
}

const app = await NestFactory.create(ApplicationModule);
app.use(logger);
await app.listen(3000);

5到6的修改

// Before
@Injectable()
export class LoggerMiddleware implements NestMiddleware {
 resolve(...args: any[]): MiddlewareFunction {
   return (req: Request, res: Response, next: Function) => {
     console.log('Request...');
     next();
   };
 }
}

// After
@Injectable()
export class LoggerMiddleware implements NestMiddleware {
  use(req: Request, res: Response, next: Function) {
    console.log('Request...');
    next();
  }
}

转载于:https://www.cnblogs.com/ajanuw/p/9572917.html