index.js

import Vue from 'vue'
import Router from 'vue-router'
import HelloWorld from '@/page1/components/HelloWorld'

Vue.use(Router)

export default new Router({
  routes: [
    {
      path: '/app2/page1',
      name: 'HelloWorld',
      component: HelloWorld
    },
    {
      path: '/app2//page1/about',
      name: 'about',
      // route level code-splitting
      // this generates a separate chunk (about.[hash].js) for this route
      // which is lazy-loaded when the route is visited.
      component: () => import(/* webpackChunkName: "about" */ '../components/About.vue')
    }
  ]
})