如何在角度2中处理带有params的子路由？

const routes: Routes = [
  { path: 'parent', component: ParentComponent, children: [
    { path: 'child/:id', component: ChildComponent }
  ]}
];

<router-outlet></router-outlet>

import { ActivatedRoute } from '@angular/router';

@Component({...})
export class ParentComponent {
  constructor(private route: ActivatedRoute) {}

  ngOnInit() {
    this.route.params.subscribe(params => {
      const id = params['id'];
      // 根据参数id执行相应的逻辑
    });
  }
}

import { ActivatedRoute } from '@angular/router';

@Component({...})
export class ChildComponent {
  constructor(private route: ActivatedRoute) {}

  ngOnInit() {
    this.route.params.subscribe(params => {
      const id = params['id'];
      // 根据参数id执行相应的逻辑
    });
  }
}