Angular2 选择器与嵌套组件中的任何元素都不匹配

Angular 2中选择器与嵌套组件中的任何元素都不匹配

typescript
// parent.component.ts
import { Component } from '@angular/core';
@Component({
  selector: 'app-parent',
  template: `
    
      
Parent Component
      
    
  `
})
export class ParentComponent {}
// child.component.ts
import { Component } from '@angular/core';
@Component({
  selector: 'app-child',
  template: `
    
Child Component
  `
})
export class ChildComponent {}

typescript
// child.component.ts
import { Component } from '@angular/core';
@Component({
  selector: 'app-parent app-child', // 添加父选择器
  template: `
    
Child Component
  `
})
export class ChildComponent {}