如何在路由模块中获取路由参数？

Question

如何在同一个路由模块中获取 id 的值？

const routes: Routes = [
  {
    path: 'departments/:id',
    component: HrComponent /* (id==='hr')?HrComponent:ITComponent;*/
  }];
@NgModule({
    imports: [RouterModule.forChild(routes)],
    exports: [RouterModule]
})
export class DynformRoutingModule { }