如何使用服务在两个组件之间共享对象数据(rxjs主题)

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

@Injectable({
  providedIn: 'root'
})
export class SharedService {
  private sharedDataSubject = new Subject<any>();

  // 发布数据的方法
  publishData(data: any) {
    this.sharedDataSubject.next(data);
  }

  // 订阅数据的方法
  getSharedData() {
    return this.sharedDataSubject.asObservable();
  }
}

import { Component, OnInit } from '@angular/core';
import { SharedService } from 'path-to-shared-service';

@Component({
  selector: 'app-component1',
  template: `
    <button (click)="publishData()">发布数据</button>
  `
})
export class Component1 implements OnInit {
  constructor(private sharedService: SharedService) {}

  ngOnInit() {}

  publishData() {
    const data = { /* 要共享的数据 */ };
    this.sharedService.publishData(data);
  }
}

import { Component, OnInit } from '@angular/core';
import { SharedService } from 'path-to-shared-service';

@Component({
  selector: 'app-component2',
  template: `
    <div>{{ sharedData }}</div>
  `
})
export class Component2 implements OnInit {
  sharedData: any;

  constructor(private sharedService: SharedService) {}

  ngOnInit() {
    this.sharedService.getSharedData().subscribe(data => {
      this.sharedData = data;
    });
  }
}