Angular:如何在不通过HTML的情况下将数据从一个组件传递到另一个组件？

import { Injectable } from '@angular/core';

@Injectable()
export class DataService {
  private data: any;

  setData(data: any) {
    this.data = data;
  }

  getData() {
    return this.data;
  }
}

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

@Component({
  selector: 'sender-component',
  template: `
    <button (click)="sendData()">发送数据</button>
  `
})
export class SenderComponent {
  constructor(private dataService: DataService) {}

  sendData() {
    const data = '要传递的数据';
    this.dataService.setData(data);
  }
}

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

@Component({
  selector: 'receiver-component',
  template: `
    <div>{{ receivedData }}</div>
  `
})
export class ReceiverComponent {
  receivedData: any;

  constructor(private dataService: DataService) {}

  ngOnInit() {
    this.receivedData = this.dataService.getData();
  }
}