const routerMap = [
 {
 path: '/permission',
 component: Layout,
 redirect: '/permission/index',
 alwaysShow: true, // will always show the root menu
 meta: {
 title: 'permission',
 icon: 'lock',
 roles: ['admin', 'editor'] // you can set roles in root nav
 },
 children: [{
 path: 'page',
 component: () => import('@/views/permission/page'),
 name: 'pagePermission',
 meta: {
 title: 'pagePermission',
 roles: ['admin'] // or you can only set roles in sub nav
 }
 }, {
 path: 'directive',
 component: () => import('@/views/permission/directive'),
 name: 'directivePermission',
 meta: {
 title: 'directivePermission'
 // if do not set roles, means: this page does not require permission
 }
 }]
 }]

import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css'// progress bar style
import { getToken } from '@/utils/auth' // getToken from cookie

NProgress.configure({ showSpinner: false })// NProgress Configuration

// permission judge function
function hasPermission(roles, permissionRoles) {
 if (roles.indexOf('admin') >= 0) return true // admin permission passed directly
 if (!permissionRoles) return true
 return roles.some(role => permissionRoles.indexOf(role) >= 0)
}

const whiteList = ['/login', '/authredirect']// no redirect whitelist

router.beforeEach((to, from, next) => {
 NProgress.start() // start progress bar
 if (getToken()) { // determine if there has token
 /* has token*/
 if (to.path === '/login') {
 next({ path: '/' })
 NProgress.done() // if current page is dashboard will not trigger afterEach hook, so manually handle it
 } else {
 if (store.getters.roles.length === 0) { // 判断当前用户是否已拉取完user_info信息
 store.dispatch('GetUserInfo').then(res => { // 拉取user_info
  const roles = res.data.roles // note: roles must be a array! such as: ['editor','develop']
  store.dispatch('GenerateRoutes', { roles }).then(() => { // 根据roles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
  next({ ...to, replace: true }) // hack方法 确保addRoutes已完成 ,set the replace: true so the navigation will not leave a history record
  })
 }).catch((err) => {
  store.dispatch('FedLogOut').then(() => {
  Message.error(err || 'Verification failed, please login again')
  next({ path: '/' })
  })
 })
 } else {
 // 没有动态改变权限的需求可直接next() 删除下方权限判断 ↓
 if (hasPermission(store.getters.roles, to.meta.roles)) {
  next()//
 } else {
  next({ path: '/401', replace: true, query: { noGoBack: true }})
 }
 // 可删 ↑
 }
 }
 } else {
 /* has no token*/
 if (whiteList.indexOf(to.path) !== -1) { // 在免登录白名单，直接进入
 next()
 } else {
 next('/login') // 否则全部重定向到登录页
 NProgress.done() // if current page is login will not trigger afterEach hook, so manually handle it
 }
 }
})

router.afterEach(() => {
 NProgress.done() // finish progress bar
})

if (store.getters.roles.length === 0) { // 判断当前用户是否已拉取完user_info信息
 store.dispatch('GetUserInfo').then(res => { // 拉取user_info
  const roles = res.data.roles // note: roles must be a array! such as: ['editor','develop']
  store.dispatch('GenerateRoutes', { roles }).then(() => { // 根据roles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
  next({ ...to, replace: true }) // hack方法 确保addRoutes已完成 ,set the replace: true so the navigation will not leave a history record
  })
 }).catch((err) => {
  store.dispatch('FedLogOut').then(() => {
  Message.error(err || 'Verification failed, please login again')
  next({ path: '/' })
  })
 })

{
 name: "login",
 path: "/login",
 component: () => import("@/pages/Login.vue")
}

function hasPermission(router, accessMenu) {
 if (whiteList.indexOf(router.path) !== -1) {
 return true;
 }
 let menu = Util.getMenuByName(router.name, accessMenu);
 if (menu.name) {
 return true;
 }
 return false;

}

Router.beforeEach(async (to, from, next) => {
 if (getToken()) {
 let userInfo = store.state.user.userInfo;
 if (!userInfo.name) {
 try {
 await store.dispatch("GetUserInfo")
 await store.dispatch('updateAccessMenu')
 if (to.path === '/login') {
  next({ name: 'home_index' })
 } else {
  //Util.toDefaultPage([...routers], to.name, router, next);
  next({ ...to, replace: true })//菜单权限更新完成,重新进一次当前路由
 }
 } 
 catch (e) {
 if (whiteList.indexOf(to.path) !== -1) { // 在免登录白名单，直接进入
  next()
 } else {
  next('/login')
 }
 }
 } else {
 if (to.path === '/login') {
 next({ name: 'home_index' })
 } else {
 if (hasPermission(to, store.getters.accessMenu)) {
  Util.toDefaultPage(store.getters.accessMenu,to, routes, next);
 } else {
  next({ path: '/403',replace:true })
 }
 }
 }
 } else {
 if (whiteList.indexOf(to.path) !== -1) { // 在免登录白名单，直接进入
 next()
 } else {
 next('/login')
 }
 }
 let menu = Util.getMenuByName(to.name, store.getters.accessMenu);
 Util.title(menu.title);
});

Router.afterEach((to) => {
 window.scrollTo(0, 0);
});

{
 name: "login",
 path: "/login",
 component: () => import("@/pages/Login.vue")
}

{
 "name": "login",
 "path": "/login",
 "component": "() => import('@/pages/Login.vue')"
}

const Home = () => import("../pages/Home.vue");
const UserInfo = () => import("../pages/UserInfo.vue");
export default {
 home: Home,
 userInfo: UserInfo
};

[
  {
  name: "home",
  path: "/",
  component: "home"
  },
  {
  name: "home",
  path: "/userinfo",
  component: "userInfo"
  }
]

const constRouterMap = [
 {
 name: "login",
 path: "/login",
 component: () => import("@/pages/Login.vue")
 },
 {
 path: "/404",
 component: () => import("@/pages/Page404.vue")
 },
 {
 path: "/init",
 component: () => import("@/pages/Init.vue")
 },
 {
 path: "*",
 redirect: "/404"
 }
];

export default constRouterMap;
import Vue from "vue";
import Router from "vue-router";
import ConstantRouterMap from "./routers";

Vue.use(Router);

export default new Router({
 // mode: 'history', // require service support
 scrollBehavior: () => ({ y: 0 }),
 routes: ConstantRouterMap
});

submitForm(formName) {
  let _this=this;
  this.$refs[formName].validate(valid => {
  if (valid) {
   _this.$store.dispatch("loginByUserName",{
   name:_this.ruleForm2.name,
   pass:_this.ruleForm2.pass
   }).then(()=>{
   _this.$router.push({
    path:'/'
   })
   })
  } else {
   
   return false;
  }
  });
 }

<template>
 <h1>404</h1>
</template>
<script>
export default {
 name:'page404',
 mounted(){
 if(!this.$store.state.isLogin){
  this.$router.replace({ path: '/login' });
  return;
 }
 if(!this.$store.state.initedApp){
  this.$router.replace({ path: '/init' });
  return
 }
 }
}
</script>

<template>
 <div></div>
</template>
<script>
import { getAccessMenuList } from "../mock/menus";
import components from "../router/routerComponents.js";
export default {
 async mounted() {
 if (!this.$store.state.isLogin) {
  this.$router.push({ path: "/login" });
  return;
 }
 if (!this.$store.state.initedApp) {
  const loading = this.$loading({
  lock: true,
  text: "初始化中",
  spinner: "el-icon-loading",
  background: "rgba(0, 0, 0, 0.7)"
  });
  let menus = await getAccessMenuList(); //模拟从后端获取
  var routers = [...menus];
  for (let router of routers) {
  let component = components[router.component];
  router.component = component;
  }
  this.$router.addRoutes(routers);
  this.$store.dispatch("setAccessMenuList", menus).then(() => {
  loading.close();
  this.$router.replace({
   path: "/"
  });
  });
  return;
 } else {
  this.$router.replace({
  path: "/"
  });
 }
 }
};
</script>