Angular 2工厂提供商

Question

如果我创建这样的文件（auth.module.ts）：

import { NgModule } from '@angular/core';
import { Http, RequestOptions } from '@angular/http';
import { AuthHttp, AuthConfig } from 'angular2-jwt';

export function authHttpServiceFactory(http: Http, options: RequestOptions) {
  return new AuthHttp(new AuthConfig(), http, options);
}

@NgModule({
  providers: [
    {
      provide: AuthHttp,
      useFactory: authHttpServiceFactory,
      deps: [Http, RequestOptions]
    }
  ]
})
export class AuthModule {}

并在app.module.ts

中声明/导入它

import {AuthModule} from "./services/auth.module";

@NgModule({
  declarations: [
    AppComponent,
    ...
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpModule,
    ...
    AuthModule
  ],
  providers: [
    ...
  ],
  bootstrap: [AppComponent]
})

我如何从我的服务中获得AuthHttp提供商？

谢谢！

（如果需要更多上下文here）