// router.js
export default new Router({
 mode: 'history',
 routes: [
 // ...
 {
 name: '404',
 path: '/404',
 component: () => import('@/views/notFound.vue')
 },
 {
 path: '*', // 此处需特别注意至于最底部
 redirect: '/404'
 }
 ],
})

// router.js
export default new Router({
 mode: 'history',
 routes: [
 // ...
 {
 name: '404',
 path: '/404',
 component: () => import('@/views/notFound.vue')
 },
 // ...other codes
 ],
})
// notFoundRouterMap.js
export default [
 {
 name: '404',
 path: '/404',
 component: () => import('@/views/notFound.vue')
 },
 },
 {
 path: '*',
 redirect: '/404'
 }
]
// main.js
//...other codes
router.beforeEach((to, from, next) => {
 new Promise((resolve, reject) => {
 if (getCookie(tokenName)) {
 if (!getInfo()) {
 Promise.all([store.dispatch('getBasicInfo'), store.dispatch('getUserDetail')]).then(res => {
 store.dispatch('GenerateRoutes', { roles }).then(() => { 
 // 根据用户权限生成可访问的路由表
 router.addRoutes(store.getters.addRouters) // 动态添加可访问路由表
 router.addRoutes(NotFoundRouterMap) // 添加404及重定向路由规则
 resolve({ ...to, replace: true }) // 重新加载一次路由，让路由表更新成功后走下面else的判断
 })
 
 })
 } else {
 // ...other codes
 }
 } else {
 window.location.href = '/login.html'
 }
 }).then(res => {
 if (res) {
 next(res)
 } else {
 next()
 }
 }).catch(err => {
 new Error(err)
 next(false)
 })

// permission.js
//...other codes
router.beforeEach((to, from, next) => {
 new Promise((resolve, reject) => {
 // ...other codes
 }).then(res => {
 if (!to.matched.length) {
 window.location = '/error.html#/404'
 return
 } 
 if (res) {
 next(res)
 } else {
 next()
 }
 }).catch(err => {
 new Error(err)
 next(false)
 })