在angular2/ionic2中执行同时可观察的请求

import { Observable } from 'rxjs/Observable';
import 'rxjs/add/observable/forkJoin';

// 定义多个请求的Observable对象
const request1$ = this.http.get('https://api.example.com/data1');
const request2$ = this.http.get('https://api.example.com/data2');
const request3$ = this.http.get('https://api.example.com/data3');

// 使用forkJoin操作符将多个Observable对象合并为一个Observable对象
const combined$ = Observable.forkJoin(request1$, request2$, request3$);

// 订阅合并后的Observable对象，获取请求结果
combined$.subscribe(
  ([response1, response2, response3]) => {
    // 处理请求结果
    console.log('Response 1:', response1);
    console.log('Response 2:', response2);
    console.log('Response 3:', response3);
  },
  error => {
    // 处理请求错误
    console.error('Error:', error);
  }
);