这里的答案是正确的路由器弃用。对于最新版本的路由器:

this.router.changes.forEach(() => {
    // Do whatever in here
});

or

this.router.changes.subscribe(() => {
     // Do whatever in here
});

要了解两者之间的区别，请查看这个SO问题。

Edit

对于最新的您必须做:

this.router.events.subscribe(event: Event => {
    // Handle route change
});

我会这样写:

ngOnInit() {
this.routed = this.router.events.map( event => event instanceof NavigationStart )
  .subscribe(() => {
  } );
}

ngOnDestroy() {
this.routed.unsubscribe();
}

为那些使用Angular9+的人更新了答案，通过使用@angular/ Router提供的路由器API并监听路由变化

import { Component } from '@angular/core';
import { Router,NavigationEnd  } from '@angular/router';

    @Component({
      selector: 'my-app',
      templateUrl: './app.component.html',
      styleUrls: [ './app.component.css' ]
    })
    export class AppComponent  {
      
      name = 'Get Current Url Route Demo';
      currentRoute: string;
     routeSubscription: subscription;
    
      constructor(private router: Router){
        console.log(router.url);
        
        this.routeSubscription = router.events.filter(event => event instanceof NavigationEnd)
              .subscribe(event => 
               {
                  this.currentRoute = event.url;          
                  console.log(event);
               });
        }
    }

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);
            }
        });

   }
}

在组件中，你可能想尝试这样做:

import {NavigationEnd, NavigationStart, Router} from '@angular/router';

constructor(private router: Router) {
router.events.subscribe(
        (event) => {
            if (event instanceof NavigationStart)
                // start loading pages
            if (event instanceof NavigationEnd) {
                // end of loading paegs
            }
        });
}

路由器3.0.0-beta。2应该是

this.router.events.subscribe(path => {
  console.log('path = ', path);
});