vue动态路由有哪两种实现方法

// router.js import Vue from 'vue' import Router from 'vue-router' import Layout from '@/layout' Vue.use(Router)// 权限路由列表 let asyncRoutes = [     {         path: '/permission',         component: Layout,         redirect: '/permission/page',         alwaysShow: true,          name: 'Permission',         meta: {             title: 'Permission',             roles: ['admin', 'editor'] // 普通的用户角色         },         children: [             {                 path: 'page',                 component: () => import('@/views/permission/page'),                 name: 'PagePermission',                 meta: {                     title: 'Page',                     roles: ['editor']  //  editor角色的用户才能访问该页面                 }             },             {                 path: 'role',                 component: () => import('@/views/permission/role'),                 name: 'RolePermission',                 meta: {                     title: 'Role',                     roles: ['admin']    //  admin角色的用户才能访问该页面                 }             }         ]     },  ]  // 静态路由  let defaultRouter = [{     path: '/404',     name: '404',     component: () => import('@/views/404'),      meta: {         title: '404'     } }] let router = new Router({     mode: 'history',     scrollBehavior: () => ({ y: 0 }),     routes: defaultRouter }) export default router

// asyncRouter.js //判断当前角色是否有访问权限 function hasPermission(roles, route) {   if (route.meta && route.meta.roles) {     return roles.some(role => route.meta.roles.includes(role))   } else {     return true   } }  // 递归过滤异步路由表，筛选角色权限路由 export function filterAsyncRoutes(routes, roles) {   const res = [];   routes.forEach(route => {     const tmp = { ...route }     if (hasPermission(roles, tmp)) {       if (tmp.children) {         tmp.children = filterAsyncRoutes(tmp.children, roles)       }       res.push(tmp)     }   })    return res }

import router from './router' import store from './store' import NProgress from 'nprogress' // 进度条插件 import 'nprogress/nprogress.css' // 进度条样式 import { getToken } from '@/utils/auth'  import { filterAsyncRoutes } from '@/utils/asyncRouter.js' NProgress.configure({ showSpinner: false }) // 进度条配置 const whiteList = ['/login']  router.beforeEach(async (to, from, next) => {     // 进度条开始     NProgress.start()      // 获取路由 meta 中的title，并设置给页面标题     document.title = to.meta.title    // 获取用户登录的token     const hasToken = getToken()     // 判断当前用户是否登录     if (hasToken) {         if (to.path === '/login') {             next({ path: '/' })             NProgress.done()         } else {             // 从store中获取用户角色             const hasRoles = store.getters.roles && store.getters.roles.length > 0               if (hasRoles) {                 next()             } else {                 try {                     // 获取用户角色                     const roles = await store.state.roles                    // 通过用户角色，获取到角色路由表                     const accessRoutes = filterAsyncRoutes(await store.state.routers,roles)                     // 动态添加路由到router内                     router.addRoutes(accessRoutes)                     next({ ...to, replace: true })                 } catch (error) {                     // 清除用户登录信息后，回跳到登录页去                     next(`/login?redirect=${to.path}`)                     NProgress.done()                 }             }         }     } else {         // 用户未登录         if (whiteList.indexOf(to.path) !== -1) {             // 需要跳转的路由是否是whiteList中的路由，若是，则直接条状             next()         } else {             // 需要跳转的路由不是whiteList中的路由，直接跳转到登录页             next(`/login?redirect=${to.path}`)             // 结束精度条             NProgress.done()         }     }})     router.afterEach(() => {     // 结束精度条     NProgress.done()    })

import Vue from 'vue' import Router from 'vue-router' import Layout from '@/layout'; Vue.use(Router)// 配置项目中没有涉及权限的公共路由 export const constantRoutes = [     {         path: '/login',         component: () => import('@/views/login'),         hidden: true     },     {         path: '/404',         component: () => import('@/views/404'),         hidden: true     }, ] const createRouter = () => new Router({     mode: 'history',     scrollBehavior: () => ({ y: 0 }),     routes: constantRoutes }) const router = createRouter() export function resetRouter() {     const newRouter = createRouter()     router.matcher = newRouter.matcher } export default router

// 引入路由文件这种的公共路由 import { constantRoutes } from '../router';// Layout 组件是项目中的主页面，切换路由时，仅切换Layout中的组件 import Layout from '@/layout'; export function getAsyncRoutes(routes) {     const res = []     // 定义路由中需要的自定名     const keys = ['path', 'name', 'children', 'redirect', 'meta', 'hidden']     // 遍历路由数组去重组可用的路由     routes.forEach(item => {         const newItem = {};         if (item.component) {             // 判断 item.component 是否等于 'Layout',若是则直接替换成引入的 Layout 组件             if (item.component === 'Layout') {                 newItem.component = Layout             } else {             //  item.component 不等于 'Layout',则说明它是组件路径地址，因此直接替换成路由引入的方法                 newItem.component = resolve => require([`@/views/${item.component}`],resolve)                                  // 此处用reqiure比较好，import引入变量会有各种莫名的错误                 // newItem.component = (() => import(`@/views/${item.component}`));             }         }         for (const key in item) {             if (keys.includes(key)) {                 newItem[key] = item[key]             }         }         // 若遍历的当前路由存在子路由，需要对子路由进行递归遍历         if (newItem.children && newItem.children.length) {             newItem.children = getAsyncRoutes(item.children)         }         res.push(newItem)     })     // 返回处理好且可用的路由数组     return res  }

//  进度条引入设置如上面第一种描述一样 import router from './router' import store from './store' import NProgress from 'nprogress' // progress bar import 'nprogress/nprogress.css' // progress bar style import { getToken } from '@/utils/auth' // get token from cookie import { getAsyncRoutes } from '@/utils/asyncRouter' const whiteList = ['/login']; router.beforeEach( async (to, from, next) => {     NProgress.start()     document.title = to.meta.title;     // 获取用户token，用来判断当前用户是否登录     const hasToken = getToken()     if (hasToken) {         if (to.path === '/login') {             next({ path: '/' })             NProgress.done()         } else {             //异步获取store中的路由             let route = await store.state.addRoutes;             const hasRouters = route && route.length>0;             //判断store中是否有路由，若有，进行下一步             if ( hasRouters ) {                 next()             } else {                 //store中没有路由，则需要获取获取异步路由，并进行格式化处理                 try {                     const accessRoutes = getAsyncRoutes(await store.state.addRoutes );                     // 动态添加格式化过的路由                     router.addRoutes(accessRoutes);                     next({ ...to, replace: true })                 } catch (error) {                     // Message.error('出错了')                     next(`/login?redirect=${to.path}`)                     NProgress.done()                 }             }         }     } else {         if (whiteList.indexOf(to.path) !== -1) {             next()         } else {             next(`/login?redirect=${to.path}`)             NProgress.done()         }     }})router.afterEach(() => {     NProgress.done()  })

//  登录接口调用后，调用路由接口，后端返回相应用户的路由res.router，我们需要存储到store中，方便其他地方拿取 this.$store.dispatch("addRoutes", res.router);

routerList = [   {         "path": "/other",         "component": "Layout",         "redirect": "noRedirect",         "name": "otherPage",         "meta": {             "title": "测试",         },         "children": [             {                 "path": "a",                 "component": "file/a",                 "name": "a",                 "meta": { "title": "a页面", "noCache": "true" }             },             {                 "path": "b",                 "component": "file/b",                 "name": "b",                 "meta": { "title": "b页面", "noCache": "true" }             },         ]     } ]