NestJS无法解析用户控制器的依赖关系

Question

当前行为

试图在我的UserController.ts中使用我的UserService.tsAuthService.ts，但我收到以下错误：[ExceptionHandler] Nest can't resolve dependencies of the UserController (?, +). Please make sure that the argument at index [0] is available in the current context.

最小限度地再现指令问题

应用程序模块.ts

import { Module } from "@nestjs/common";
import { ApplicationController } from "controllers/application.controller";
import { ApplicationService } from "services/application.service";
import { AuthModule } from "./auth.module";
import { UserModule } from "./user.module";
@Module({
imports: [
AuthModule,
UserModule,
],
controllers: [
ApplicationController,
],
providers: [
ApplicationService,
],
})
export class ApplicationModule {}

user.module.ts

import { Module } from "@nestjs/common";
import { UserController } from "controllers/user.controller";
@Module({
controllers: [
UserController,
],
})
export class UserModule {}

user.service.ts

import { Injectable } from "@nestjs/common";
import { InjectRepository } from "@nestjs/typeorm";
import { Repository } from "typeorm";
import { UserEntity } from "entities/user.entity";
@Injectable()
export class UserService {
constructor(
@InjectRepository(UserEntity)
private readonly repository: Repository<UserEntity>,
) {}
async findAll(): Promise<UserEntity[]> {
return await this.repository.find();
}
}

auth.module.ts

import { Module } from "@nestjs/common";
import { JwtModule } from "@nestjs/jwt";
import { AuthService } from "services/auth.service";
@Module({
imports: [
JwtModule.register({
secretOrPrivateKey: "key12345",
}),
],
})
export class AuthModule {}

auth.service.ts

import { Injectable } from "@nestjs/common";
import { JwtService } from "@nestjs/jwt";
import { TokenJwtInterface } from "interfaces/token-jwt.interface";
@Injectable()
export class AuthService {
private tokenType;
constructor(private readonly jwtService: JwtService) {
this.tokenType = "bearer";
}
public generateTokenJwt(
payload: object,
expiresIn: number,
): TokenJwtInterface {
const accessToken = this.jwtService.sign(payload);
return {
access_token: accessToken,
token_type: this.tokenType,
refresh_token: "",
expires_in: expiresIn,
};
}
}

user.controller.ts

import {
Get,
Controller,
Post,
Body,
HttpCode,
HttpStatus,
} from "@nestjs/common";
import { UserService } from "services/user.service";
import { UserEntity } from "entities/user.entity";
import * as bcrypt from "bcryptjs";
import { AuthService } from "services/auth.service";
@Controller("/users")
export class UserController {
constructor(
private readonly userService: UserService,
private readonly authService: AuthService,
) {}
@Get()
async root(): Promise<UserEntity[]> {
return await this.userService.findAll();
}
...

改变行为的动机/用例是什么

Bugfix？

环境

Nest版本：5.1.0对于工具问题：-节点版本：v8.11.3-平台：Ubuntu-IDE：VSC-

Answer 1

您的AuthService必须是UserModule的一部分

import { Module } from "@nestjs/common";
import { UserController } from "controllers/user.controller";
@Module({
controllers: [
UserController,
],
components: [
UserService,
AuthService
],
imports: [
AuthModule 
]
})
export class UserModule {}

我一直认为import包含一些模块就足够了，但根据我的经验，我总是必须在components部分声明它。

我还意识到您忘记在组件模块中声明UserService