带有参数的 Angular 2 路由充当通配符路由

我有一个带有多个模块的 angular 应用程序，每个模块定义了一些路由。

应用程序（基本模块）使用这个 AppRoutingModule：

const routes: Routes = [
  {path: 'user', loadChildren: 'app/user/user.module#UserModule'},
  {path: 'exchange', loadChildren: 'app/exchange/exchange.module#ExchangeModule'},
  {path: 'home', component: HomeComponent},
  {path: '', redirectTo: '/home', pathMatch: 'full'},
];
@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule {
}

用户模块路由器：

@NgModule({
  imports: [RouterModule.forChild(
    [{
      path: '', component: UserComponent,
      children: [
        {path: '', component: UserProfileComponent, canActivate: [AuthGuardService]},
        {path: 'login', component: UserLoginComponent},
        {path: 'register', component: UserRegisterComponent},
        {path: 'confirm/:confirmcode', component: UserConfirmMailComponent},
        {path: 'logout', component: UserLogoutComponent}
      ]
    }]
  )],
  exports: [RouterModule]
})
export class UserRoutingModule {
}

交换模块路由器：

@NgModule({
  imports: [RouterModule.forChild(
    [{
      path: '', component: ExchangeComponent,
      children: [
        {path: '', component: ExchangeListComponent},
        {path: ':exchange-name', component: ExchangeDetailComponent},
        {path: ':exchange-name/:baseCode', component: ExchangeSelectionComponent},
        {path: ':exchange-name/:baseCode/:targetCode', component: ExchangePairComponent},
      ]
    }]
  )],
  exports: [RouterModule]
})
export class ExchangeRoutingModule {
}

我现在可以按预期使用路由http://localhost:4200/exchange/Sample/Base访问ExchangeSelectionComponent组件。

但是当我导航到http://localhost:4200/user/confirm/并意外错过添加所需的参数时confirmcode，而不是 Invalid-Route-Error 我匹配到与ExchangeSelectionComponent上面相同的-route 。此外，当我尝试打开时，http://localhost:4200/thispagedoesnotexist我会ExchangeDetailComponent使用exchange-name = thispagedoesnotexist.

似乎下面的所有内容/exchange/也与基本 root 匹配/。

为什么会这样，我该如何避免这种行为？我认为在内部路由中定义的每个路由routeChildren只会在访问相应的父路由时被延迟加载，直到那时甚至没有被触及。

我使用 Angular 5.2。提前感谢您的任何意见。