angular - 合并声明 'DepartmentListComponent' 中的单个声明必须全部导出或全部 local.ts(2395) 路由组件

Question

我对这段代码有疑问，我完全按照视频教程(我正在学习)进行操作，但它不起作用并且需要一些声明。指南中编写的代码有可能采用一些较旧的方法吗？它的硬代码没有服务。

应用程序路由.module.ts

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { DepartmentListComponent } from './department-list/department-list.component';
import { EmployeeListComponent } from './employee-list/employee-list.component';


const routes: Routes = [
  { path: 'departments', component: DepartmentListComponent },
  { path: 'employees', component: EmployeeListComponent }

];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }
export const routingComponents  [DepartmentListComponent, EmployeeListComponent ]

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

import { AppRoutingModule, routingComponents } from './app-routing.module';
import { AppComponent } from './app.component';


@NgModule({
  declarations: [
    AppComponent,
    routingComponents
  ],
  imports: [
    BrowserModule,
    AppRoutingModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

app.component.html

<h1> Welocme in routing</h1>

<router-outlet></router-outlet>

我需要查看正在运行的应用程序并更改 url 表单 http://localhost:4200/employees和 http://localhost:4200/departments .
我是初学者，所以请理解。

Answer 1

您正在导出 DepartmentListComponent在此文件中，该文件在本地同一文件模块中导入。