javascript - 从 app.component.ts 进行 Angular 路由

你好，我有一个 AngularJS 应用和路由模块（AppRoutingModule），当我在 app.component.html 中插入 <router-outlet></router-outlet> 时，一切都很好，但如果我想只显示某些页面给注册用户而不显示给其他人，该怎么办。

我的意思是在我的 app.component.ts 中

if (something) { 默认显示示例页面 } else { 显示示例2页面 }

应用路由模块.ts

import { NgModule } from '@angular/core';
// Routing
import { RouterModule, Routes } from '@angular/router';
import { HomeComponent } from './home/home.component';
import { LoginComponent } from './login/login.component';
import { RegistrationComponent } from './registration/registration.component';

const appRoutes: Routes = [
  { path: '', component: HomeComponent },
  { path: 'login', component: LoginComponent },
  { path: 'registration', component: RegistrationComponent}
];

@NgModule({
  imports: [
    RouterModule.forRoot(
      appRoutes,

    )
  ],
  exports: [
    RouterModule
  ]
})
export class AppRoutingModule {}

app.module.ts

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

import { AppComponent } from './app.component';
import { AlertModule } from 'ngx-bootstrap';

// Import the AF2 Module
import { AngularFireModule } from 'angularfire2';
import { AngularFireAuthModule } from 'angularfire2/auth';
import { AngularFireDatabaseModule } from 'angularfire2/database';
import { environment } from '../environments/environment';

import { AppRoutingModule } from './app-routing.module';
import { HomeComponent } from './home/home.component';
import { LoginComponent } from './login/login.component';
import { RegistrationComponent } from './registration/registration.component';

@NgModule({
  declarations: [
    AppComponent,
    RegistrationComponent,
    HomeComponent,
    LoginComponent
  ],
  imports: [
    BrowserModule,
    AlertModule.forRoot(),
    AngularFireModule.initializeApp(environment.firebase),
    AngularFireAuthModule,
    AngularFireDatabaseModule,
    AppRoutingModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

app.component.ts

import { Component } from '@angular/core';
import { AngularFireDatabase, FirebaseListObservable } from 'angularfire2/database';
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  title = 'app';
  items: FirebaseListObservable<any[]>;
  constructor(db: AngularFireDatabase) {
    this.items = db.list('/sms');
  }
}

app.component.html

<router-outlet></router-outlet>

答案＃1

要在“页面”之间导航，你可以在主页组件类中添加以下内容：

import { Router } from '@angular/router';
....

constructor(private router: Router){}
...

然后从某处调用（例如在（点击）时）:

if(condition){
    this.router.navigate(['/page1']);
}
else{
    this.router.navigate(['/page2']);
}

并将此添加到路由中：

.....
  { path: 'page1', component: Page2Component },
  { path: 'page2', component: Page1Component}
....

要么在主页组件 HTML 中添加此内容：

  <a class="home-app-link" routerLink="/page1">
    <h3>Page1</h3>
  </a>

  <a class="home-app-link" routerLink="/page2">
    <h3>Page2</h3>
  </a>

答案＃2

使用 this.router.navigate**(['/path']);

这里的路径指的是在 app.module.ts 中输入的 组件路径。

更多参考请查看官方 Angular 文档链接