我正在寻找在我的AppComponent中检测路由变化。
然后,我将检查全局用户令牌,以查看用户是否已登录,以便在用户未登录时重定向该用户。
我正在寻找在我的AppComponent中检测路由变化。
然后,我将检查全局用户令牌,以查看用户是否已登录,以便在用户未登录时重定向该用户。
当前回答
在angular 6和RxJS6中:
import { filter, debounceTime } from 'rxjs/operators';
this.router.events.pipe(
filter((event) => event instanceof NavigationEnd),
debounceTime(40000)
).subscribe(
x => {
console.log('val',x);
this.router.navigate(['/']); /*Redirect to Home*/
}
)
其他回答
可以使用以下方法检测路由变化:
import {Router, ActivatedRoute} from '@angular/ Router '; 构造函数(私有路由:ActivatedRoute) {} This.router.events.subscribe ((event) => { 如果(事件){ / /做某事 } });
以以下方式捕获路由更改事件…
import { Component, OnInit, Output, ViewChild } from "@angular/core";
import { Router, NavigationStart, NavigationEnd, Event as NavigationEvent } from '@angular/router';
@Component({
selector: "my-app",
templateUrl: "app/app.component.html",
styleUrls: ["app/app.component.css"]
})
export class AppComponent {
constructor(private cacheComponentObj: CacheComponent,
private router: Router) {
/* Route event types
NavigationEnd
NavigationCancel
NavigationError
RoutesRecognized
*/
router.events.forEach((event: NavigationEvent) => {
//Before Navigation
if (event instanceof NavigationStart) {
switch (event.url) {
case "/app/home":
{
//Do Work
break;
}
case "/app/About":
{
//Do Work
break;
}
}
}
//After Navigation
if (event instanceof NavigationEnd) {
switch (event.url) {
case "/app/home":
{
//Do Work
break;
}
case "/app/About":
{
//Do Work
break;
}
}
}
});
}
}
如果你试图访问当前路由,同时监听路由变化:
router.events.pipe(filter(r=>r instanceof NavigationEnd)).subscribe(r=>{
console.log((r as NavigationEnd).url);
});
对于Angular 7,应该这样写:
this.router.events。订阅((事件:事件)=> {})
具体示例如下:
import { Component } from '@angular/core';
import { Router, Event, NavigationStart, NavigationEnd, NavigationError } from '@angular/router';
@Component({
selector: 'app-root',
template: `<router-outlet></router-outlet>`
})
export class AppComponent {
constructor(private router: Router) {
this.router.events.subscribe((event: Event) => {
if (event instanceof NavigationStart) {
// Show loading indicator
}
if (event instanceof NavigationEnd) {
// Hide loading indicator
}
if (event instanceof NavigationError) {
// Hide loading indicator
// Present error to user
console.log(event.error);
}
});
}
}
只需在AppRoutingModule上进行更改
@NgModule({
imports: [RouterModule.forRoot(routes, { scrollPositionRestoration: 'enabled' })],
exports: [RouterModule]
})