目前,BreadcrumbModule只包含一个组件：ng2-breadcrumb.但是,当我尝试在BreadcrumbDemoModule中使用此组件时,我收到错误消息：

‘ng2-breadcrumb’ is not a known element.

我想我必须在某个地方错过一条线,并希望有人可以向我指出我做错了什么.

非常感谢你提前！

BreadcrumbModule的文件

breadcrumb.component.html：

THIS IS A BREADCRUMB TEST

breadcrumb.component.ts：

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

@Component({
  selector: 'ng2-breadcrumb',template: require('./breadcrumb.component.html')
})
export class BreadcrumbComponent {}

组件/面包屑/ index.ts：

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { BreadcrumbComponent } from './breadcrumb.component';

@NgModule({
  imports: [
    BrowserModule //for later use
  ],declarations: [
    BreadcrumbComponent
  ]
})
export class BreadcrumbModule {}

BreadcrumbDemoModule的文件

面包屑demo.component.html：

<ng2-breadcrumb></ng2-breadcrumb>

面包屑demo.component.ts：

import { Component } from '@angular/core';
import { BreadcrumbModule } from './../index';

@Component({
  selector: 'ng2-breadcrumb-demo',template: require('./breadcrumb-demo.component.html')
})
export class BreadcrumbDemoComponent {}

组件/面包屑/演示/ index.ts：

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { BreadcrumbModule } from './../index';
import { BreadcrumbDemoComponent } from './breadcrumb-demo.component';

@NgModule({
  imports: [
    BreadcrumbModule,BrowserModule,],declarations: [
    BreadcrumbDemoComponent
  ]
})
export class BreadcrumbDemoModule {}