如何在angular2的另一个组件中显示函数中的数据？

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

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

  getData(): string {
    return this.data;
  }

  setData(data: string): void {
    this.data = data;
  }
}

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

@Component({
  selector: 'app-component1',
  template: `
    <h1>Data: {{ data }}</h1>
  `,
})
export class Component1Component implements OnInit {
  data: string;

  constructor(private dataService: DataService) {}

  ngOnInit(): void {
    this.data = this.dataService.getData();
  }
}

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

@Component({
  selector: 'app-component2',
  template: `
    <h2>Data from Component 1: {{ data }}</h2>
  `,
})
export class Component2Component implements OnInit {
  data: string;

  constructor(private dataService: DataService) {}

  ngOnInit(): void {
    this.data = this.dataService.getData();
  }
}