如果Angular 2中的解析失败,如何重定向到另一个页面? 我将此解析称为我的编辑页面,但我想处理Resolve页面中的错误
我的决心:
resolve(route: ActivatedRouteSnapshot): Promise<any>|boolean {
return new Promise((resolve, reject) => {
if (route.params['id'] !== undefined) {
this.dataService.getHttpEmpresaShow(this.endpoint_url_Get + route.params['id'])
.subscribe(
result => {
console.log("ok");
return resolve(result);
},
error => {
return resolve(error);
});
}});
答案 0 :(得分:23)
就像in the docs一样,调用this.router.navigate(["url"])
...(想想在构造函数中注入Router
)
class MyResolve {
constructor(private router: Router) {}
resolve(route: ActivatedRouteSnapshot): Observable <any> {
return this.dataService.getHttpEmpresaShow(this.endpoint_url_Get + route.params['id'])
.pipe(catchError(err => {
this.router.navigate(["/404"]);
return EMPTY;
}));
}
}
答案 1 :(得分:0)
另一种解决方案,如果要在对所有解析程序进行故障转移后应用重定向策略,则可以拦截路由器事件,并在故障事件上应用重定向。您可以在此处在AppComponent中添加的代码:
import { Component, OnInit, ChangeDetectorRef } from '@angular/core';
import { Router, RouterEvent, NavigationError } from '@angular/router';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.scss']
})
export class AppComponent implements OnInit {
constructor(
private router: Router,
private cdr: ChangeDetectorRef
){}
ngOnInit() {
this.router.events.subscribe((event: RouterEvent) => {
this.navigationInterceptor(event)
});
}
navigationInterceptor(event: RouterEvent): void {
if (event instanceof NavigationError) {
this.router.navigate(["error"],{ queryParams: { redirect: event.url } });
}
this.cdr.detectChanges();
}
}