Vue router动态路由如何实现

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实现思路

思路其实很简单，也很明确：

将路由分为静态路由(staticRouters)、动态路由

静态路由初始化时正常加载

用户登陆后，获取相关动态路由数据，

然后利用vue：addRoute追加到vue实例中即可。 实现思路虽然很简单，但是过程并不是一帆风顺，需要注意的细节还是很多的

环境介绍

• vue-cli: v4.x.x

• vue: v2.6.11

• vuex: v3.4.0

• vue-router: v3.2.0

实现过程

路由文件处理(router/index.js):

import Vue from 'vue'import VueRouter from 'vue-router'import HomeLayout from '../layouts/HomeLayout'import store from '@/store/index'Vue.use(VueRouter)// 解决重复点击路由报错的BUGConst originalPush = VueRouter.prototype.pushVueRouter.prototype.push = function push(location) {    return originalPush.call(this, location).catch((err) => err)}const routes = [{path: '/',name: 'homeBase',component: HomeLayout,redirect: {name: 'home'},children: [// 门户路由{path: 'home',name: 'home',component: () => import('../views/portal/Home.vue'),},{path: 'lists',name: 'lists',component: () => import('../views/portal/Lists.vue'),},{path: 'detail',name: 'detail',component: () => import('../views/portal/Detail.vue'),},]},]// 定义静态路由集合const staticRouterMap = ['home','lists','detail']const router = new VueRouter({mode: 'history',base: process.env.BASE_URL,routes,})// 路由全局拦截// 以下可根据业务逻辑自行在拦截路由中进行处理，此处仅以本人业务作为示例展示// 本示例以 vuex+sessionStorage相互配合完成动态路由的数据存储// 仅以vuex存储获取到的动态路由信息后，在刷新页面时，动态路由信息是会丢失，// 从而导致页面404router.beforeEach((to, from, next) => {const userState = JSON.parse(sessionStorage.getItem('userState'))if (!userState || !userState.isLogin) {// 没有登录// 如果前往页面非公共路由，则跳转至首页if (staticRouterMap.indexOf(to.name) < 0) {next({name: 'home'})} else {next()}} else {// 登录// 已经存在路由列表: 注意刚登陆成功第一次调转route时相应store数据还未更新const hasGetRoute = store.getters['user/hasGetRoute']const routeMap = JSON.parse(sessionStorage.getItem('routeMap'))if(!hasGetRoute && routeMap) {            // 刷新页面且有route记录数据，可再次追加动态路由store.dispatch('user/updateRouteOfUser', routeMap)next({...to, replace: true})} else {next()}}})export default router

view数据处理

<template><div class="home"><div>这是demo</div><div><div v-show="!isLogin"><a-divider>调用接口: 模拟登陆</a-divider><div ><a-space :size="size"><a-button type="primary" @click="login()">用户登陆</a-button></a-space><p>{{loading}}</p></div></div></div></div></template><script>// @ is an alias to /srcimport {Base64} from 'js-base64'import User from '../../api/user'import {mapGetters,mapMutations,mapActions} from 'vuex'export default {name: 'home',data() {return {size: "middle",user: {'name': 'xxxx','pass': Base64.encode('xxxx')},}},components: {},computed: {...mapGetters('user', ['isLogin', 'userInfo', 'hasGetRoute'])},methods: {...mapMutations('user', ['setUserState']),...mapActions('user', ['getUserInfo', 'getDynamicRouteOfUser']),login() {if (this.isLogin) {this.$router.push({path: '/user'})} else {// 模拟用户User.login(this.user).then(res => {this.setUserState({'isLogin': true,'ut': res.data.user_token,'userType': 1})this.getUserInfo()//以下就是根据用户登陆信息，获取动态路由信息操作this.getDynamicRouteOfUser(type).then(() => {this.$router.push({path: '/user'})})}).catch(() => {})}},},}</script><style lang="sCSS" scoped>.home {padding: 20px;}</style>

vuex

import VueRouter from '../../router'import UserApi from '../../api/user'import axiOS from 'axios'import TeacherLayout from '@/layouts/Layout'import NotFound from '@/layouts/404'const user = {    namespaced: true,    state: {        // 用户状态相关         userState: JSON.parse(sessionStorage.getItem('userState')) || {ut: '', isLogin: false, userType: null},        // 用户信息相关        userInfo: JSON.parse(sessionStorage.getItem('userInfo')) || {},        // 是否获取route        hasGetRoute: false,        // routeMap        routeMap: JSON.parse(sessionStorage.getItem('routeMap')) || [],    },    getters: {        ut : state => state.userState.ut,        isLogin: state => !!state.userState.isLogin,        userInfo: state => state.userInfo,        hasGetRoute: state => state.hasGetRoute,        routeMap: state => state.routeMap[0].children,    },    mutations: {        setUserState(state, playload) {            state.userState = playload            sessionStorage.setItem('userState', JSON.stringify(state.userState))        },        setUserInfo(state, playload) {            state.userInfo = playload            sessionStorage.setItem('userInfo', JSON.stringify(state.userInfo))        },        setRouteMap(state, routers) {            state.routeMap = routers            // 为了防止用户刷新页面导致动态创建的路由失效，将其存储在本地中            sessionStorage.setItem('routeMap', JSON.stringify(routers));        },        setDynamicRouteMap(state, routers) {            state.hasGetRoute = true            let routerMaps = filterRouter(routers)            // 最后追加404路由            routerMaps.push({                path: '*',                component: NotFound            })            // 追加路由            // 这块是重点，如果直接使用addRoute是无效的            routerMaps.forEach(item => {                VueRouter.addRoute(item);            })        },        resetLogin() {            sessionStorage.clear()        }    },    actions: {        // 获取用户信息        async getUserInfo({commit}) {            await UserApi.user().then(res => {                commit('setUserInfo', res)            }).catch(error => {                console.log(error)            })        },        // 获取用户授权动态路由        async getDynamicRouteOfUser({commit}, type) {            let flag = false            // mock api            mockRouter().then(res => {                commit('setRouteMap', res.data)                commit('setDynamicRouteMap', res.data)                flag = true            }).catch(err => {                console.log(err)            })            return flag        },        // 刷新重置路由        updateRouteOfUser({commit}, routerMap) {            commit('setDynamicRouteMap', routerMap)        },    }}// handle viewsconst loadView = (viewPath) => {    return () => import('@/views/' + viewPath)}// Handle routersconst filterRouter = (routers) => {    return routers.filter((router) => {   // 区分布局与视图文件，因为加载方式不同        if (router.component === 'Layout') {            router.component = Layout        }else {            // view            router.component = loadView(router.component)        }        // 删除路由记录中的无用字段：这段是本示例与后台协商的，但在vue-router中不被支持的字段信息，可忽略        if (!router.redirect || !router.redirect.length) { delete router.redirect }        // 判断是否存在子路由，并递归调用自己        if(router.children && router.children.length) {            router.children = filterRouter(router.children)        }        return true    })} // mock 数据async function mockRouter() {    const url = 'Http://localhost:8080/t.json'    let routerData    await axios.get(url).then(res => {        routerData = res.data    }).catch(err => {        console.log(err)    })    return routerData}export default user;

路由数据(demo)

{    "data":[        {            "title":"demo",            "name":"x",            "pname":"",            "path": "/x",            "type": 1,            "component": "Layout",            "redirect": {"name": "xx"},            "children": [                {                    "title":"child1",                    "name":"xx",                    "pname":"x",                    "path": "",                    "type": 2,                    "icon": "desktop",                    "component": "xx.vue",                    "redirect": {}                },                {                    "title":"child1",                    "name":"xx",                    "pname":"tBase",                    "path": "xx",                    "type": 2,                    "icon": "container",                    "component": "xx.vue",                    "redirect": {"name": "xxx"},                    "children": [                        {                            "title":"child2",                            "name":"xx",                            "pname":"xx",                            "path": "xx",                            "type": 2,                            "icon": "unordered-list",                            "component": "xx.vue",                            "redirect": {}                         }                    ]                },            ]        }    ]}

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