Angular2 :如何为多个组件提供相同的保护

import { Injectable } from '@angular/core';
import { CanActivateChild, ActivatedRouteSnapshot, RouterStateSnapshot, UrlTree } from '@angular/router';
import { Observable } from 'rxjs';

@Injectable()
export class AuthGuard implements CanActivateChild {
  canActivateChild(
    next: ActivatedRouteSnapshot,
    state: RouterStateSnapshot): Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree {
    // 在这里进行身份验证和授权逻辑
    // 如果用户已经登录并且有访问权限，则返回true
    // 否则，可以重定向到登录页面或其他适当的处理方式
    return true;
  }
}

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { HomeComponent } from './home.component';
import { ProtectedComponent } from './protected.component';
import { AuthGuard } from './auth.guard';

const routes: Routes = [
  { path: '', component: HomeComponent },
  { path: 'protected', component: ProtectedComponent, canActivateChild: [AuthGuard] },
];

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