在contains 目录下 新建index.ts 文件
src/app/components/contains/index.ts
export * from './admin.module';
export * from './brand/brand.module';
export * from './toolbar-user/toolbar-user.module';
export * from './toolbar-notification/toolbar-notification.module';
export * from './header/header.module';
export * from './admin.component';
export * from './footer/footer.component';
export * from './customizer/customizer.module';
src/app/app.component.ts
import{Contain1,Contain2}from'./components/contains'
