如何在angular应用程序之外访问angular路由数据

import { Injectable } from '@angular/core';
import { ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';
import { Observable, BehaviorSubject } from 'rxjs';

@Injectable({
  providedIn: 'root'
})
export class RouteDataService {
  private routeDataSubject: BehaviorSubject<any> = new BehaviorSubject<any>(null);
  public routeData$: Observable<any> = this.routeDataSubject.asObservable();

  constructor() { }

  public setRouteData(data: any): void {
    this.routeDataSubject.next(data);
  }

  public getRouteData(): Observable<any> {
    return this.routeData$;
  }
}

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';

import { HomeComponent } from './home.component';
import { AboutComponent } from './about.component';

const routes: Routes = [
  { path: '', component: HomeComponent, data: { title: 'Home' } },
  { path: 'about', component: AboutComponent, data: { title: 'About' } },
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

import { Component, OnInit } from '@angular/core';
import { RouteDataService } from './route-data.service';

@Component({
  selector: 'app-about',
  template: `
    <h1>About</h1>
    <p>{{ routeData }}</p>
  `
})
export class AboutComponent implements OnInit {
  public routeData: any;

  constructor(private routeDataService: RouteDataService) { }

  ngOnInit() {
    this.routeDataService.getRouteData().subscribe(data => {
      this.routeData = data;
    });
  }
}