我不明白我收到了这个错误: [Nest] 1276 - 25/04/2024 19:39:31 错误 [ExceptionHandler] Nest 无法解析 AuthService(?、JwtService)的依赖项。请确保索引 [0] 处的参数 UsersService 在 AuthModule 上下文中可用。
潜在的解决方案:
但我不明白,因为我在另一个项目中运行相同的代码,我的文件:
auth模块:
import { Module } from '@nestjs/common';
import { AuthController } from './auth.controller';
import { AuthService } from './auth.service';
import { UsersModule } from 'src/modules/users/users.module';
import { JwtModule } from '@nestjs/jwt';
import { jwtConstants } from './constants';
import { LocalStrategy } from './local.strategy';
import { JwtStrategy } from './jwt.strategy';
@Module({
imports: [
UsersModule,
JwtModule.register({
secret: jwtConstants.secret,
signOptions: { expiresIn: '24h' },
}),
],
controllers: [AuthController, LocalStrategy, JwtStrategy],
providers: [AuthService],
})
export class AuthModule {}
应用程序模块:
import { Module } from '@nestjs/common';
import { MongooseModule } from '@nestjs/mongoose';
import { AppController } from './app.controller';
import { AppService } from './app.service';
import config from 'config';
import { UsersModule } from './modules/users/users.module';
import { ConfigModule } from '@nestjs/config';
import { AuthModule } from './auth/auth.module';
@Module({
imports: [
ConfigModule.forRoot({
isGlobal: true, // no need to import into other modules
}),
MongooseModule.forRoot(config.get('mongoDbUrl'), {
w: 1,
}),
UsersModule,
AuthModule,
],
controllers: [AppController],
providers: [AppService],
})
export class AppModule {}
用户模块:
import { Module } from '@nestjs/common';
import { UsersService } from './users.service';
import { UsersController } from './users.controller';
import { MongooseModule } from '@nestjs/mongoose';
import { User, UserSchema } from '../../shared/schema/user';
@Module({
imports: [
MongooseModule.forFeature([{ name: User.name, schema: UserSchema }]),
],
controllers: [UsersController],
providers: [UsersService],
exports: [UsersService],
})
export class UsersModule {}
认证服务:
import { Injectable, HttpException, HttpStatus } from '@nestjs/common';
import { JwtService } from '@nestjs/jwt';
import * as bcrypt from 'bcrypt';
import { UsersService } from 'src/modules/users/Users.service';
import { User } from 'src/shared/schema/user';
@Injectable()
export class AuthService {
constructor(
private usersService: UsersService,
private jwtService: JwtService,
) {}
async validateUser(username: string, pass: string): Promise<any> {
const user = await this.usersService.findOneByUsername(username);
if (user && user.password === pass) {
// eslint-disable-next-line @typescript-eslint/no-unused-vars
const { password, ...result } = user;
return result;
}
return null;
}
async signin(user: User): Promise<any> {
const foundUser = await this.usersService.userGet(user.email);
if (foundUser) {
const { password } = foundUser;
if (bcrypt.compare(user.password, password)) {
const payload = { email: user.email };
return {
accessToken: this.jwtService.sign(payload),
};
}
return new HttpException(
'email ou mot de passe incorrect',
HttpStatus.UNAUTHORIZED,
);
}
return new HttpException(
'email ou mot de passe incorrect',
HttpStatus.UNAUTHORIZED,
);
}
async login(user: any) {
const payload = { username: user.username, userId: user.id };
return {
access_token: this.jwtService.sign(payload),
};
}
}
我不明白为什么 Nest 不解析 jwtService。
将
auth.service
文件中的导入语句从 Users.service
更改为 users.service
。大小写很重要,因为它们被视为单独的文件,因此由于 JS 领域的工作方式,它们有自己的 instanceof
。
import { Injectable, HttpException, HttpStatus } from '@nestjs/common';
import { JwtService } from '@nestjs/jwt';
import * as bcrypt from 'bcrypt';
import { UsersService } from 'src/modules/users/Users.service';
import { User } from 'src/shared/schema/user';
import { Injectable, HttpException, HttpStatus } from '@nestjs/common';
import { JwtService } from '@nestjs/jwt';
import * as bcrypt from 'bcrypt';
import { UsersService } from 'src/modules/users/users.service';
import { User } from 'src/shared/schema/user';
这是一个微妙的变化,但却是一个重要的变化。 Typescript 编译器配置中有一个选项可以强制使用一致的文件大小写,这对于打开很有帮助