onSameUrlNavigation
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-ponent.html',styleUrls: ['./report-ponent.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);}}
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