在页面刷新以等待数据加载时延迟canActivate调用

import { Injectable } from '@angular/core';
import { Resolve } from '@angular/router';
import { Observable } from 'rxjs';
import { DataService } from './data.service';

@Injectable()
export class DataResolver implements Resolve<any> {
  constructor(private dataService: DataService) {}

  resolve(): Observable<any> {
    return this.dataService.loadData(); // 通过调用数据服务加载数据
  }
}

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { HomeComponent } from './home.component';
import { DataResolver } from './data.resolver';

const routes: Routes = [
  {
    path: 'home',
    component: HomeComponent,
    canActivate: [DataResolver], // 使用Resolver作为canActivate守卫
    resolve: {
      data: DataResolver // 指定Resolver来预先加载数据
    }
  }
];

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

import { Component } from '@angular/core';
import { ActivatedRoute } from '@angular/router';

@Component({
  selector: 'app-home',
  template: `
    <div *ngIf="data">
      <!-- 显示预加载的数据 -->
    </div>
  `
})
export class HomeComponent {
  data: any;

  constructor(private route: ActivatedRoute) {
    this.data = this.route.snapshot.data['data']; // 从路由快照中获取预加载的数据
  }
}