如何将对象从一个组件传递到另一个组件以在angular2中构建数据模型？

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

@Component({
  selector: 'app-parent',
  template: `
    <h2>父组件</h2>
    <app-child [childObject]="parentObject" (childEvent)="onChildEvent($event)"></app-child>
  `
})
export class ParentComponent {
  parentObject = { name: 'John', age: 30 };

  onChildEvent(event: any) {
    console.log(event);
  }
}

import { Component, Input, Output, EventEmitter } from '@angular/core';

@Component({
  selector: 'app-child',
  template: `
    <h2>子组件</h2>
    <p>姓名：{{ childObject.name }}</p>
    <p>年龄：{{ childObject.age }}</p>
    <button (click)="updateObject()">更新对象</button>
  `
})
export class ChildComponent {
  @Input() childObject: any;
  @Output() childEvent = new EventEmitter<any>();

  updateObject() {
    this.childObject.name = 'Alice';
    this.childObject.age = 25;
    this.childEvent.emit(this.childObject);
  }
}