[英]Getting `No NgModule metadata found for 'class{}'` error when building angular application
[英]Angular application not building NgModule
我有一個 Angular 應用程序,但我不明白編譯器告訴我為什么應用程序無法構建。 這些是我從編譯器得到的錯誤:
ERROR in src/app/list-items/list-items.component.ts:9:14 -
error NG6002: Appears in the NgModule.imports of AppModule, but could not be resolved to an NgModule class.
Is it missing an @NgModule annotation?
9 export class ListItemsComponent implements OnInit {
~~~~~~~~~~~~~~~~~~
src/app/not-found/not-found.component.ts:8:14 - error NG6002: Appears in the NgModule.imports of AppModule, but could
not be resolved to an NgModule class.
Is it missing an @NgModule annotation?
8 export class NotFoundComponent implements OnInit {
~~~~~~~~~~~~~~~~~
這是我的list-items.component.ts
文件:
import { Component, OnInit, NgModule } from '@angular/core';
@Component({
selector: 'app-list-items',
templateUrl: './list-items.component.html',
styleUrls: ['./list-items.component.css']
})
export class ListItemsComponent implements OnInit {
constructor() { }
ngOnInit(): void {
}
}
這是我的not-found.component.ts
文件:
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'app-not-found',
templateUrl: './not-found.component.html',
styleUrls: ['./not-found.component.css']
})
export class NotFoundComponent implements OnInit {
constructor() { }
ngOnInit(): void {
}
}
這是我的app.module.ts
文件:
import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { HttpClientModule } from '@angular/common/http';
import { ItemService } from './items.service';
import { NewItemFormComponent } from './new-item-form/new-item-form.component';
import { MatFormFieldModule } from '@angular/material/form-field';
import { MatInputModule } from '@angular/material/input';
import { MatButtonModule } from '@angular/material/button';
import { MatMenuModule } from '@angular/material/menu';
import { MatIconModule } from '@angular/material/icon';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { FormsModule } from '@angular/forms';
import { NavigationMenuComponent } from './navigation-menu/navigation-menu.component';
import { ListItemsComponent } from './list-items/list-items.component';
import { NotFoundComponent } from './not-found/not-found.component';
import { BrowserModule } from '@angular/platform-browser';
const appRoutes: Routes = [ {
path: '', //default component to display
component: ListItemsComponent
}, {
path: 'addItem', //when items added
component: NewItemFormComponent
}, {
path: 'listItems', //when items listed
component: ListItemsComponent
}, {
path: '**', //when path cannot be found
component: NotFoundComponent
}
];
@NgModule({
declarations: [
AppComponent,
NewItemFormComponent,
NavigationMenuComponent
],
imports: [
BrowserModule,
AppRoutingModule,
HttpClientModule,
MatFormFieldModule,
MatInputModule,
MatButtonModule,
MatIconModule,
MatMenuModule,
BrowserAnimationsModule,
FormsModule,
RouterModule.forRoot(appRoutes),
ListItemsComponent,
NotFoundComponent
],
providers: [ItemService],
bootstrap: [AppComponent]
})
export class AppModule { }
有沒有人碰巧理解編譯器試圖告訴我關於NgModule
的內容?
從 app.modules 文件中的 imports 部分中刪除這兩個組件並將它們移動到聲明中。
您不是在創建自定義模塊; 您只是在創建一個組件。 以正確的方式導入它,您應該不會再遇到任何問題。
我還建議您使用 angular cli 生成器來生成新組件。
ng generate component test
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