angular5 loadchildren component加载失败

Question

//主路由模块loadchidren settings.module.ts路由报错
//访问http://localhost:4200/settings 出现Error: Component SettingsComponent is not part of any NgModule or the module has not been imported into your module. 错误

//app-routing.module.ts（主路由模块）

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
const routes: Routes = [
  {
    path: 'settings',
    loadChildren: './modules/settings/settings.module#SettingsModule'
  }
];
@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

//settings.module.ts

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { Routes, RouterModule } from '@angular/router';
import { SettingsComponent } from '../../Components/settings/settings.component';
import { PasswordSettingsComponent } from '../../Components/password-settings/password-settings.component';
import { ProfileSettingsComponent } from '../../Components/profile-settings/profile-settings.component';
export const ROUTES: Routes = [
  {
    path: '',
    component: SettingsComponent,
    children: [
      { path: 'profile', component: ProfileSettingsComponent },
      { path: 'password', component: PasswordSettingsComponent }
    ]
  }
];
@NgModule({
  imports: [
    CommonModule,
    RouterModule.forChild(ROUTES)
  ],
})
export class SettingsModule {}

//app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { SettingsComponent } from './Components/settings/settings.component';
import { ProfileSettingsComponent } from './Components/profile-settings/profile-settings.component';
import { PasswordSettingsComponent } from './Components/password-settings/password-settings.component';

@NgModule({
  declarations: [
    AppComponent,
    SettingsComponent,
    ProfileSettingsComponent,
    PasswordSettingsComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Answer 1

将 SettingsComponent,ProfileSettingsComponent,PasswordSettingsComponent放在settings.module.ts的declarations中，把app.module.ts中他们的部分删除。