0
我的方法中存在控制流问题。我怎样才能等待来自服务器的数据?是否有可能在服务的构造函数中准备数据,并在注入后在所有组件中以单例形式获取数据?键入脚本从服务器获取同步数据
import { Permission } from '../_models/Permission';
import { Injectable, OnInit } from "@angular/core";
import { AuthService, AppHttpService } from '../_services/index';
import { RequestActionType } from '../_models/RequestActionType';
@Injectable()
export class PermissionService {
private getUrl: string = "/Permission/GetAllPermissions";
private permissions: Permission[] = [];
constructor(private httpService: AppHttpService, private authService: AuthService) {
this.PreparePermissionData();
}
public PreparePermissionData() {
if (this.authService.loggedIn()) {
this.httpService.authGet(this.getUrl).then(response => {
this.permissions = response.Data as Permission[];
});
}
https://basarat.gitbooks.io/typescript/docs/promise.html – Roljhon
[Angular 2 - 直接从Observable返回数据]的可能副本(http://stackoverflow.com/questions/37867020/angular- 2-return-data-directly-from-an-an-observable) – jonrsharpe
另外,教程中有关于通过HTTP获取数据的整个部分(https://angular.io/docs/ts/latest/tutorial/toh-pt6.html )。 – jonrsharpe