从服务获取数据，并在加载/呈现时在组件中显示它: Angular2

import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Injectable({
  providedIn: 'root'
})
export class DataService {
  constructor(private http: HttpClient) { }

  getData() {
    return this.http.get('https://api.example.com/data');
  }
}

import { Component, OnInit } from '@angular/core';
import { DataService } from './data.service';

@Component({
  selector: 'app-data',
  template: `
    <div *ngIf="data">
      {{ data }}
    </div>
  `
})
export class DataComponent implements OnInit {
  data: any;

  constructor(private dataService: DataService) { }

  ngOnInit() {
    this.dataService.getData().subscribe((response) => {
      this.data = response;
    });
  }
}