src/app/app.module.ts：38：5 中的错误 - 错误 TS2304：找不到名称'HttpClientModule'

Question

我正在为一个特定的项目使用Angular-8。

这是我的app.module.ts

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { LoginModule } from './login/login.module';
import { CoreModule } from './core/core.module';
import { SharedModule } from './shared/shared.module';
import { ReactiveFormsModule } from '@angular/forms';
import { HTTP_INTERCEPTORS } from '@angular/common/http';
import { ErrorsModule } from './errors/errors.module';
import { RouterModule } from '@angular/router';
import { PagesModule } from './pages/pages.module';
import { FormsModule } from '@angular/forms';
import { SidebarComponent } from './shared/sidebar/sidebar.component';
import { StoreModule } from '@ngrx/store';
import { reducers, metaReducers } from './store/reducers';
import { StoreDevtoolsModule } from '@ngrx/store-devtools';
import { environment } from '../environments/environment';
import { EffectsModule } from '@ngrx/effects';
import { AppEffects } from './store/effects/app.effects';
import { JwtInterceptor } from './core/interceptors/jwt.interceptor';
import { ErrorInterceptor } from './core/interceptors/error.interceptor';
import { CacheInterceptor } from './core/interceptors/cache.interceptor';
import { ServiceWorkerModule } from '@angular/service-worker';
import { HttpClientTestingModule } from '@angular/common/http/testing';
import {HttpClientModule} from '@angular/common/http';
@NgModule({
imports: [
RouterModule,
BrowserModule,
BrowserAnimationsModule,
LoginModule,
CoreModule,
SharedModule,
ReactiveFormsModule,
HttpClientModule,
ErrorsModule,
PagesModule,
FormsModule,
AppRoutingModule,
StoreModule.forRoot(reducers, {
metaReducers,
runtimeChecks: {
strictStateImmutability: true,
strictActionImmutability: true
}
}),
!environment.production ? StoreDevtoolsModule.instrument() : [],
EffectsModule.forRoot([AppEffects]),
StoreDevtoolsModule.instrument({
maxAge: 25,
logOnly: environment.production
}),
ServiceWorkerModule.register('ngsw-worker.js', {
enabled: environment.production
})
],

当我发球时，我得到了这个错误：

src/app/app.module中的错误。ts:38:5-错误TS2304:找不到名称"HttpClientModule"。

这是第38行：

HttpClientModule，

如何解决此问题？

感谢

Answer 1

HttpClient在Angular 4.3.0版本中引入。此外，你必须确保你已经导入&在主AppModule的导入元数据中注入了HttpClientModule。

// Import HttpClientModule from @angular/common/http in AppModule
import {HttpClientModule} from '@angular/common/http';

//in place where you wanted to use `HttpClient`
import { HttpClient } from '@angular/common/http';