angular2 resolveAndCreate HTTP-RC7中缺少HTTP_PROVIDERS

Question

回到RC4，當存在HTTP_PROVIDERS時，我可以使用創建我的自定義http實例

export function createHTTP(url:string, headers?:Headers){
  let injector = ReflectiveInjector.resolveAndCreate([
    myHttp,
    {provide:'defaultUrl', useValue:url},
    {provide:'defaultHeaders', useValue:headers || new Headers()},
    ...HTTP_Providers
  ])
  return injector.get(myHttp)
}

myHttp是Http的包裝器

@Injectable()
export class myHttp{
  constructor(@Inject('defaultUrl) private url:string, @Inject('defaultHeaders) private headers:Headers, private http:Http){}

  get()
  put()...
}

現在已棄用並刪除了HTTP_PROVIDERS，如何提供它？

謝謝！

Answer 1

@NgModule({
  imports: [HttpModule],
  ...
})
class AppModule {}

或將Angular2源中HTTP_PROVIDERS的定義復制到您的源中，並像以前一樣在此處使用它。

const HTTP_PROVIDERS = [
    {provide: Http, useFactory: 
      (xhrBackend: XHRBackend, requestOptions: RequestOptions): Http =>
          new Http(xhrBackend, requestOptions), 
          deps: [XHRBackend, RequestOptions]},
    BrowserXhr,
    {provide: RequestOptions, useClass: BaseRequestOptions},
    {provide: ResponseOptions, useClass: BaseResponseOptions},
    XHRBackend,
    {provide: XSRFStrategy, useFactory: () => new CookieXSRFStrategy()},
];

您也可以使用以下提供者自己創建注射器

let resolvedProviders = ReflectiveInjector.resolve(HTTP_PROVIDERS);
let injector = ReflectiveInjector.fromResolvedProviders(resolvedProviders, /* this.injector (parent injector if any) */ );
var http = child.get(Http);

另請參閱以角度2手動注入Http