如何在Angular中重新加载订阅信息？

import { Component, OnInit, OnDestroy } from '@angular/core';
import { Subscription } from 'rxjs';
import { DataService } from 'app/services/data.service';

@Component({
  selector: 'app-example',
  templateUrl: './example.component.html',
  styleUrls: ['./example.component.css']
})
export class ExampleComponent implements OnInit, OnDestroy {
  subscription: Subscription;
  data: any;

  constructor(private dataService: DataService) { }

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

  ngOnDestroy() {
    this.subscription.unsubscribe();
  }

  reloadData() {
    this.data = {}; // 清空数据
    this.subscription = this.dataService.getData().subscribe((data) => {
      this.data = data; // 重新加载数据
    });
  }
}