标签：
You can also use Promise for http:
So for the service, you need to call toPromise() method:
getVehicles(value?: string) { return this._http.get(‘api/vehicles.json‘) .map((response: Response) => <Vehicle[]>response.json().data) .toPromise() .catch(this.handleError); }
Then in your controller, you can get the Promise back:
getHeroes(value?: string) { this.vehicles = this._vehicleService.getVehicles(value); }
But notice that, we assign the Promise to the this.vehices. so it means we use ‘async‘ pipe:
<ul> <li *ngFor="#vehicle of vehicles | async" (click)="select(vehicle)"> {{ vehicle.name }} </li> </ul>
[Angular 2] Using Promise to Http
标签：
原文地址：http://www.cnblogs.com/Answer1215/p/5361936.html
