在角度2中,您如何检测路线变化

我现在正在使用最新的库,我将如何更新：

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

@Component({
  moduleId: module.id,selector: 'HeaderComponent',templateUrl: 'header.component.html'
})

export class HeaderComponent{
  router : Router;

  constructor(router: Router,location: Location){   
      this.router = router;

      this.router.changes.subscribe((currentRoute) => {
          let currentRoute = this.location.path();          
      })
  }
}

这是我的模块：

export * from './header.component';

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { RouterModule } from '@angular/router';

import { HeaderComponent } from './header.component';

@NgModule({
  imports: [RouterModule,CommonModule],declarations: [HeaderComponent],exports: [HeaderComponent],providers: []
})

export class HeaderModule { }