如何在angular2中进行http调用

import { Http, Response } from '@angular/http';

constructor(private http: Http) { }

this.http.get('https://api.example.com/data')
  .subscribe((response: Response) => {
    // 处理响应数据
    console.log(response.json());
  });

this.http.post('https://api.example.com/data', { name: 'John' }, { headers: headers })
  .subscribe((response: Response) => {
    // 处理响应数据
    console.log(response.json());
  });