Angular 5 canActivate总是返回特定路线的登录页面

// auth.guard.ts
import { Injectable } from '@angular/core';
import { CanActivate, Router } from '@angular/router';

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

  canActivate(): boolean {
    // 身份验证逻辑
    const isAuthenticated = ...; // 检查用户是否已登录
    const hasSufficientPermissions = ...; // 检查用户是否具有足够的权限

    if (isAuthenticated && hasSufficientPermissions) {
      return true; // 允许访问路由
    } else {
      this.router.navigate(['/login']); // 重定向到登录页面
      return false; // 阻止访问路由
    }
  }
}

// app-routing.module.ts
import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { AuthGuard } from './auth.guard';

const routes: Routes = [
  { path: 'protected-route', canActivate: [AuthGuard], component: ProtectedComponent },
  // 其他路由配置
];

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