Redirect if Resolve fails Angular 2

Another solution, if you want to apply a redirect strategy after failling for ALL of your resolvers, you can intercept a router event and apply redirect on a fail event. Here the code you can add in your AppComponent :

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();
  }

}

Just like in the docs, calling this.router.navigate(["url"])... (think to inject Router in your constructor)

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;
      }));
  }
}