路由配置文件

加入children属性配置方式与路由类似

const routes: Routes = [{path:'',redirectTo:'/Father/ChildrenOne',pathMatch:'full'},{path: 'Father',component:FatherComponent,children: [{path: 'ChildrenOne',component:ChildrenOneComponent,children: []},{path: 'ChildrenTwo',component:ChildrenTwoComponent,children: []}]},];

一级html页面代码

<router-outlet></router-outlet>

二级html页面（FatherComponent组件的页面）

<p>一级路由</p>
<a [routerLink]="['./ChildrenOne']" >二级路由1</a>
<a [routerLink]="['./ChildrenTwo']" >二级路由2</a>
<router-outlet></router-outlet>

浏览器中展示