从angular5.1起提供onSameUrlNavigation来支持路由重新加载。
有两个值'reload'和'ignore'。默认为'ignore'
定义当路由器收到一个导航到当前 URL 的请求时应该怎么做。 默认情况下，路由器将会忽略这次导航。但这样会阻止类似于 "刷新" 按钮的特性。 使用该选项可以配置导航到当前 URL 时的行为。
使用
配置onSameUrlNavigation
@NgModule({ imports: [RouterModule.forRoot( routes, { onSameUrlNavigation: 'reload' } )], exports: [RouterModule] })
reload实际上不会重新加载路由，只是重新出发挂载在路由器上的事件。
配置runGuardsAndResolvers
runGuardsAndResolvers有三个值：
paramsChange: 仅在路由参数更改时触发。如/reports/:id 中id更改
paramsOrQueryParamsChange: 当路由参数更改或参训参数更改时触发。如/reports/:id/list?page=23中的id或page属性更改
always ：始终触发
const routes: Routes = [ { path: '', children: [ { path: 'report-list', component: ReportListComponent }, { path: 'detail/:id', component: ReportDetailComponent, runGuardsAndResolvers: 'always' }, { path: '', redirectTo: 'report-list', pathMatch: 'full' } ] } ];
组件监听router.events
import {Component, OnDestroy, OnInit} from '@angular/core'; import {Observable} from 'rxjs'; import {Report} from '@models/report'; import {ReportService} from '@services/report.service'; import {ActivatedRoute, NavigationEnd, Router} from '@angular/router'; @Component({ selector: 'app-report-detail', templateUrl: './report-detail.component.html', styleUrls: ['./report-detail.component.scss'] }) export class ReportDetailComponent implements OnInit, OnDestroy { report$: Observable<Report>; navigationSubscription; constructor( private reportService: ReportService, private router: Router, private route: ActivatedRoute ) { this.navigationSubscription = this.router.events.subscribe((event: any) => { if (event instanceof NavigationEnd) { this.initLoad(event); } }); } ngOnInit() { const id = +this.route.snapshot.paramMap.get('id'); this.report$ = this.reportService.getReport(id); } ngOnDestroy(): void { // 销毁navigationSubscription，避免内存泄漏 if (this.navigationSubscription) { this.navigationSubscription.unsubscribe(); } } initLoad(e) { window.scrollTo(0, 0); console.log(e); } }