Angular 2如何使用路由器和location.go()检测后退按钮按下？

import { RouterModule, Routes } from '@angular/router';
import { LocationStrategy, HashLocationStrategy } from '@angular/common';

@NgModule({
  imports: [
    RouterModule.forRoot(routes),
    // 使用HashLocationStrategy或其他策略
    { provide: LocationStrategy, useClass: HashLocationStrategy }
  ],
  exports: [RouterModule]
})
export class AppRoutingModule { }

import { Component, OnInit } from '@angular/core';
import { Router, NavigationStart } from '@angular/router';
import { Location } from '@angular/common';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {
  private previousUrl: string;

  constructor(private router: Router, private location: Location) {
    this.previousUrl = location.path();
    router.events.subscribe(event => {
      if (event instanceof NavigationStart) {
        if (event.url === this.previousUrl && event.navigationTrigger === 'popstate') {
          // 后退按钮被按下
          console.log('后退按钮被按下');
          // 执行你的逻辑，例如使用Location.go()返回到特定页面
          this.location.go('/your-specific-path');
        }
        this.previousUrl = event.url;
      }
    });
  }

  ngOnInit(): void {}
}