vue 项目中当访问路由不存在的时候默认访问404页面操作

const baseRoute = [
 { path: '/login', name: 'login', component: Login },
 {path: '/', redirect: '/index', component: Layout, name: 'dashboard'},
 // 404page
 { path: '/404', name: 'page404', component: page404 },
 {
 path: '/',
 redirect: '/index',
 component: Layout,
 children: [
 {
 path: 'index',
 name: 'index',
 component: ModeIndex,
 meta: {
  title: '', // 设备建模
  icon: ''
 }
 },
 {
 path: 'project',
 name: 'project',
 component: Project,
 meta: {
  dynamic: true, // 动态面包屑标题
  title: ''
 }
 }
 ]
 }
 {
 path: '*', // 页面不存在的情况下会跳到404页面
 redirect: '/404',
 name: 'notFound',
 hidden: true
 }
]
const router = new Router({
 routes: baseRoute
})

if (to.path.slice(1) !== '') {
  router.push({
  path: '/login',
  query: {
  redirect: to.path.slice(1)
  }
  })
 } else {
 router.push({
  path: '/login'
 })
 }

const baseRoute = [
 { path: '/login', name: 'login', component: Login },
 {path: '/', redirect: '/index', component: Layout, name: 'dashboard'},
　　// 404page
　{path: '/404', component: page404, name: 'page404'},　
 {
 path: '/',
 redirect: '/index',
 component: Layout,
 children: [
 {
 path: 'index',
 name: 'index',
 component: ModeIndex,
 meta: {
  title: '', // 设备建模
  icon: ''
 }
 },
 {
 path: 'project',
 name: 'project',
 component: Project,
 meta: {
  dynamic: true, // 动态面包屑标题
  title: ''
 }
 }
 ]
 },
 // {
 // path: '*', // 页面不存在的情况下会跳到404页面
 //redirect: '/404',
 //name: 'notFound',
 //hidden: true
 //}
]
const router = new Router({
 routes: baseRoute
})

import router from './router'
import { getCookie } from './utils/auth'

// 通过beforeEach钩子来判断用户是否登陆过 有无token
const whiteList = ['/login'] // 不重定向白名单
// const userInfo = getUserInfo()

router.beforeEach((to, from, next) => {
 console.log(to.matched)
 // 判断是否有登录过
 if (getCookie('userId_dev')) {
 // 如果包含userId_dev 从登录页面跳转 直接跳转到首页 /
 if (to.path === '/login') {
 next()
 } else {
 if (to.matched.length === 0) {
 next('/404') // 判断此跳转路由的来源路由是否存在，存在的情况跳转到来源路由，否则跳转到404页面
 }
 next() // 如果匹配到正确跳转
 }
 // 没有登录
 } else {
 if (whiteList.indexOf(to.path) !== -1) {
 next()
 } else {
 // 还没有登录过 则跳转到登录界面
 // next('/login')
 if (to.path.slice(1) !== '') {
 if (to.matched.length === 0) {
  router.push({
  path: '/login'
  })
 } else {
  router.push({
  path: '/login',
  query: {
  redirect: to.path.slice(1)
  }
  })
 }
 } else {
 router.push({
  path: '/login'
 })
 }
 }
 }
})