守卫

创建守卫目录

nest g guard guard/auth

创建自定义的守卫

守卫如果没有通过会报403，表示没有权限

import { CanActivate, ExecutionContext, Injectable } from '@nestjs/common';
import { Observable } from 'rxjs';
@Injectable()
export class AuthGuard implements CanActivate {
  canActivate(
    context: ExecutionContext,
  ): boolean | Promise<boolean> | Observable<boolean> {
    // console.log(context);
    console.log( );
    //  守卫请求
    const req = context.switchToHttp().getRequest();
    //  获取头 传入想要的值
    const authorization = req.header('authorization')
    if(authorization){
      return true;
    }
    return false;
  }
}

单独接口守卫

import { Controller, Get ,UseGuards} from '@nestjs/common';
//  引入自定义的守卫
import {AuthGuard} from '../guard/auth.guard'
export class AutjController {
    @Get()
    @UseGuards(AuthGuard)   //  配置独立接口守卫
    index(){
        return '前端伪大叔'
    }
}

整个文件守卫

import { Controller, Get ,UseGuards} from '@nestjs/common';
//  引入自定义的守卫
import {AuthGuard} from '../guard/auth.guard'
@Controller('autj')
@UseGuards(AuthGuard)   //  配置全部方法 - 守卫
export class AutjController {
    @Get()
    index(){
        return '前端伪大叔'
    }
}

配置全局守卫

需要在mian.ts中配置全局守卫

import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';
//  守卫
import {AuthGuard}from './guard/auth.guard'
async function bootstrap() {
  const app = await NestFactory.create<NestExpressApplication>(AppModule);
  app.useGlobalGuards(new AuthGuard())    //    配置全局守卫
  await app.listen(3000);
}
bootstrap();