Question

我正在构建一个具有根模块的应用程序，然后在此模块下有3个子模块。在模块1中，有一个组件可以在模块3中重用，但是，如果我直接进入模块3中的组件URL，组件永远不会加载（我认为这是因为模块1未加载）。我已经尝试从模块1导出组件并在根模块中引导它，但是我收到错误，指出找不到组件选择器

--- ---编辑

根模块

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpModule,
    ManagerModule,
    LogadoModule,
    GeralModule,
    RouterModule.forRoot(routes, {useHash: true})
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

第1单元

@NgModule({
    declarations: [
        GeralComponent,
        GeralHeaderComponent,
        LoginComponent,
        AtividadesListagemComponent // -> COMPONENT TO BE SHARED
    ],
    imports: [
        CommonModule,
        ReactiveFormsModule,
        FormsModule,
        GeralRoutingModule
    ], 
    providers: [GeralService],
    exports: [GeralComponent],
    bootstrap: [GeralComponent]
})
export class GeralModule{}

模块3 // - ＆gt;在此模块中使用共享组件

@NgModule({
    declarations: [
        LogadoComponent,
        AtividadesInscritoComponent,
        LogadoHeaderComponent
    ],
    imports: [
        CommonModule,
        ReactiveFormsModule,
        FormsModule,
        LogadoRoutingModule
    ], 
    providers: [],
    exports: [LogadoComponent],
    bootstrap: [LogadoComponent]
})
export class LogadoModule{}

项目结构是：

根模块第1单元第2单元第3单元

----编辑2 -----

共享模块

@NgModule({
  imports: [CommonModule],
  exports : [
    CommonModule,
    AtividadesListagemComponent
  ],
  declarations: [AtividadesListagemComponent]
})
export class SharedModule { }

根模块

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpModule,
    ManagerModule,
    LogadoModule,
    GeralModule,
    RouterModule.forRoot(routes, {useHash: true})
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

第1单元

@NgModule({
    declarations: [
        GeralComponent,
        GeralHeaderComponent,
        LoginComponent
    ],
    imports: [
        CommonModule,
        ReactiveFormsModule,
        FormsModule,
        GeralRoutingModule,
        SharedModule
    ], 
    providers: [GeralService],
    exports: [GeralComponent],
    bootstrap: [GeralComponent]
})
export class GeralModule{}

第3单元

@NgModule({
    declarations: [
        LogadoComponent,
        AtividadesInscritoComponent,
        LogadoHeaderComponent
    ],
    imports: [
        CommonModule,
        ReactiveFormsModule,
        FormsModule,
        LogadoRoutingModule,
        SharedModule
    ], 
    providers: [],
    exports: [LogadoComponent],
    bootstrap: [LogadoComponent]
})
export class LogadoModule{}

Answer 1

当您有一个需要在多个模块之间共享的组件时，建议的方法是将组件添加到SharedModule，然后在任何需要它的模块中导入该共享模块。

在此示例中，StarComponent由多个模块共享：

import { NgModule }  from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';

import { StarComponent } from './star.component';

@NgModule({
  imports: [ CommonModule],
  exports : [
    CommonModule,
    FormsModule,
    StarComponent
  ],
  declarations: [ StarComponent ],
})
export class SharedModule { }

以下是Product模块如何导入它：

import { NgModule } from '@angular/core';
import { RouterModule } from '@angular/router';

import { ProductListComponent } from './product-list.component';
import { ProductDetailComponent } from './product-detail.component';

import { SharedModule } from '../shared/shared.module';

@NgModule({
  imports: [
    SharedModule,
    RouterModule.forChild([
      { path: '', component: ProductListComponent },
      { path: ':id', component: ProductDetailComponent }
    ])
  ],
  declarations: [
    ProductListComponent,
    ProductDetailComponent
  ]
})
export class ProductModule { }

我在这里有完整的示例代码：https://github.com/DeborahK/Angular2-GettingStarted/tree/master/APM%20-%20Final

Angular 2组件未在不同模块中加载

1 个答案: