Typescript 在RolesGuard中使用JwtService解码JWT令牌并获取用户角色，而无需使用passport

我真的不知道该怎么解决我的问题。我尝试在控制器中为受保护的路由实现AuthGuard。我想检查roles.guard.ts中的用户角色，如果他有一个所需的角色，控制器将为他打开。我的结构看起来像：

- src
  - auth
    auth.controller.ts
    auth.service.ts
    auth.module.ts
  - roles
    roles.decorator.ts
    roles.guard.ts
  app.module.ts
  main.ts

在auth.service.ts中，我使用JwtService生成令牌并验证令牌，它也可以工作：

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

@Injectable()
export class AuthService {
  constructor(
    private readonly jwtService: JwtService
  ) {
  }

  findUser(id: number): string {
    if (id === 0) throw new Error("User not available");

    return "martin";
  }

  async generateToken(email: string, role: string[]): Promise<string> {
    const payload = { email: email, role: role };

    return this.jwtService.sign(payload, { expiresIn: '24h', secret: process.env['JWT_SECRET'] });
  }

  async validateToken(token: string): Promise<boolean> {
    const isValidToken = await this.jwtService.verify(token, { secret: process.env['JWT_SECRET'] });

    return !!isValidToken;
  }
}

我的auth.module.ts没有什么特别之处，与文档中相同：

import { Module } from '@nestjs/common';
import { AuthService } from './auth.service';
import { AuthController } from './auth.controller';
import { JwtModule } from '@nestjs/jwt';

@Module({
  imports: [JwtModule.register({
    secret: process.env['JWT_SECRET']
  })],
  controllers: [AuthController],
  providers: [AuthService],
})
export class AuthModule {
}

在roles.guard.ts中，它被激活以检查

@roles

中的角色，我想使用JwtService解码存储在cookies中的JWT令牌，因此我编写了以下代码：

import { Injectable, CanActivate, ExecutionContext } from '@nestjs/common';
import { Reflector } from '@nestjs/core';
import { Observable } from 'rxjs';
import { JwtService } from '@nestjs/jwt';

@Injectable()
export class RolesGuard implements CanActivate {
  constructor(
    private readonly reflector: Reflector,
    private jwtService: JwtService
  ) {
  }

  canActivate(context: ExecutionContext): boolean | Promise<boolean> | Observable<boolean> {
    const roles = this.reflector.get<string[]>('roles', context.getHandler());
    if (!roles) return true;

    const request = context.switchToHttp().getRequest();
    const user = request.headers;

    if (!user.auth_token) return false;

    const matchRoles = () => this.jwtService.verify(user.auth_token, { secret: process.env['JWT_SECRET'] });

    console.log(matchRoles());
  }
}

在myapp.module.ts的末尾：

import { Module } from '@nestjs/common';
import { TypeOrmModule } from '@nestjs/typeorm';
import { ConfigModule } from '@nestjs/config';
import { Connection } from 'typeorm';
import { APP_GUARD } from '@nestjs/core';
import { RolesGuard } from './roles/roles.guard';
import { AuthModule } from './auth/auth.module';

@Module({
  imports: [
    ConfigModule.forRoot({
      envFilePath: ['.env.development', '.env.production'],
    }),
    TypeOrmModule.forRoot({
      entities: [],
      synchronize: true
    }),
    AuthModule,
    RolesGuard
  ],
  controllers: [],
  providers: [
    {
      provide: APP_GUARD,
      useClass: RolesGuard
    }
  ],
})
export class AppModule {
  constructor(private connection: Connection) {
  }
}

---

我不知道该怎么办？另一个模块仅用于

角色.guard.ts

或什么？我真的不想使用passport并实现他的策略，而我应该（理论上）使用JwtService属性。或者我应该将

角色。*

文件移动到

auth

目录？

RolesGuard

不应该在

imports

数组中。在

imports

数组中唯一应该的是。所有嵌套增强子（、、和）也存在于

提供程序

数组之外，除非您将它们与各自的

APP.*

常量进行全局绑定

Nest can't resolve dependencies of the RolesGuard (Reflector,?). Please make sure that the argument JwtService at index [1] is available in the RolesGuard context.

Potential solutions:
- If JwtService is a provider, is it part of the current Rol
esGuard?
- If JwtService is exported from a separate @Module, is that
 module imported within RolesGuard?
  @Module({
    imports: [ /* the Module containing JwtService */ ]
  })

import { Module } from '@nestjs/common';
import { TypeOrmModule } from '@nestjs/typeorm';
import { ConfigModule } from '@nestjs/config';
import { Connection } from 'typeorm';
import { APP_GUARD } from '@nestjs/core';
import { RolesGuard } from './roles/roles.guard';
import { AuthModule } from './auth/auth.module';

@Module({
  imports: [
    ConfigModule.forRoot({
      envFilePath: ['.env.development', '.env.production'],
    }),
    TypeOrmModule.forRoot({
      entities: [],
      synchronize: true
    }),
    AuthModule,
    RolesGuard
  ],
  controllers: [],
  providers: [
    {
      provide: APP_GUARD,
      useClass: RolesGuard
    }
  ],
})
export class AppModule {
  constructor(private connection: Connection) {
  }
}