Angular2 : The responses to HTTP get requests are being cached in IE

问题

The responses to most HTTP get requests are being cached in IE Edge. It doesn't happen in other browsers as far as I know. I fixed that on older versions, but How can I do it on Angular2?

any help would be appreciated.

回答1:

A common fix is to add a random query parameter value to the request URL. You can create a custom Http implementation that does that for each request.

@Injectable() 
class NoCacheHttp extends Http {
  constructor(_backend: ConnectionBackend, _defaultOptions: RequestOptions) {
    super(_backend, _defaultOptions);
  }

  get(url: string, options?: RequestOptionsArgs) : Observable<Response> {
    let newUrl = /* add some random or incrementing number query parameter to URL */
    return super.get(newUrl, options);
  }

  post(...)
  ...
}

@NgModule({
  imports: [HttpModule],
  export: [HttpModule],
  providers: [{provide: Http, useClass: NoCacheHttp}]
})
export class NoCacheHttpModule {}

@NgModule({
  imports: [BrowserModule, NoCacheHttpModule],
  declarations: [AppModule],
  bootstrap: [AppModule]
})
export class AppModule {}

来源：https://stackoverflow.com/questions/40988263/angular2-the-responses-to-http-get-requests-are-being-cached-in-ie