我知道您有两个不同的问题:

I understand you have two different questions:

1- 如何防止组件在离开时被破坏.2- 实现子路由.

1- How to prevent the destruction of the component when you leave it. 2- implementing child routes.

1) 目前 Angular 没有方便的方法来做到这一点.如果它们是像 canDestroy() 这样的生命周期钩子，我们会很感激.

1) For now Angular doesn't have convenient way to do this. We would apreciate it if they were a life cycle hook called like canDestroy().

无论如何，您可以使用不可路由的选项卡来执行此操作，也可以将数据存储在不会被破坏的更高组件上.

Anyway you can do this either using non routable tabs OR just store your data on a higher component that doesn't get destroyed.

2) 对于子路由，我只举两个例子:

2) For the child routes I'll just put 2 examples:

Ex1:常规子路由

const AdminRoutes: Routes = [
{
  path: '',
  component: AdminComponent,
  children: [
    {
      path: 'users',
      component: UsersComponent,
      children: [
        { path: 'acces',  component: AccesComponent, data: { preload: true} },
        { path: 'roles',  component: RolesComponent, data: { preload: true} },
        { path: '',   redirectTo: '/admin/users/acces', pathMatch: 'full' },
        { path: '**', redirectTo: '/admin/users/acces', pathMatch: 'full' },
      ],
      data: { preload: true}
    },
    { path: '',   redirectTo: '/login', pathMatch: 'full' },
    { path: '**', redirectTo: '/login', pathMatch: 'full' }
  ]
},

EX2:当子路由属于另一个模块时

EX2: When the child routes belongs to another module

更高模块的代码

`

    const appRoutes: Routes = [
  { path: 'login',  component: LoginComponent, data: { preload: true} },
  {
    path: 'admin',
    loadChildren: 'app/modules/admin/admin.module#AdminModule',
    canActivate: [AuthGuardService],
    data: { preload: true}
  },
  { path: '',   redirectTo: '/login', pathMatch: 'full' },
  { path: '**', redirectTo: '/login', pathMatch: 'full' }

`

自己模块中子路由的代码

Code for child routes in their own module

`

const AdminRoutes: Routes = [
{
  path: '',
  component: AdminComponent,
  children: [
    {
      path: 'users',
      component: UsersComponent,
      children: [
        { path: 'acces',  component: AccesComponent, data: { preload: true} },
        { path: 'roles',  component: RolesComponent, data: { preload: true} },
        { path: '',   redirectTo: '/admin/users/acces', pathMatch: 'full' },
        { path: '**', redirectTo: '/admin/users/acces', pathMatch: 'full' },
      ],
      data: { preload: true}
    },
    { path: '',   redirectTo: '/login', pathMatch: 'full' },
    { path: '**', redirectTo: '/login', pathMatch: 'full' }
  ]
},

`