Angular 2安全旁路规则应该放在哪个组件中？

import { Injectable } from '@angular/core';
import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, Router } from '@angular/router';

@Injectable()
export class SecurityGuard implements CanActivate {
  constructor(private router: Router) {}

  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean {
    // 在这里编写安全旁路规则的逻辑
    // 检查用户权限或其他安全性要求
    // 如果满足条件，返回true；否则，返回false

    if (/* 满足条件 */) {
      return true;
    } else {
      // 重定向到其他页面或显示错误信息
      this.router.navigate(['/unauthorized']);
      return false;
    }
  }
}

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';

import { HomeComponent } from './home.component';
import { ProfileComponent } from './profile.component';
import { SecurityGuard } from './security.guard';

const routes: Routes = [
  { path: '', component: HomeComponent },
  { path: 'profile', component: ProfileComponent, canActivate: [SecurityGuard] },
  // 其他路由配置...
];

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