搭建Vue从Vue-cli到router路由护卫的实现

 const title = '双11剁手啦' const port = '1111' module.exports = { publicPath: '/wxy', //自定义端口号 devServer: { port }, //自定义变量 configureWebpack: { name: title } }

 const path = require('path') //处理地址 function resolve(dir) { return path.join(__dirname, dir) } module.exports = { ..., chainWebpack(config) { //安装loader,对config进行链式操作即可修改loader、plugins //1.svg rule中要排除icons目录 config.module.rule('svg') //转换为绝对地址 .exclude.add(resolve('src/icons')) //查看配置后svg规则 vue inspect --rule svg //2.添加一个规则icons config.module.rule('icons') .test(/\.svg$/) .include.add(resolve('src/icons')).end() .use('svg-sprite-loader') .loader('svg-sprite-loader') .options({ symbolId: 'icon-[name]' }) } }

 <template> <svg :class="svgClass" aria-hidden="true" v-on="$listeners"> <use :xlink:href="iconName" rel="external nofollow" /> </svg> </template> <script> export default { name: "SvgIcon", props: { iconClass: { type: String, required: true }, className: { type: String, default: "" } }, computed: { iconName() { return `#icon-${this.iconClass}`; }, svgClass() { if (this.className) { return "svg-icon " + this.className; } else { return "svg-icon"; } } } }; </script> <style scoped> .svg-icon { width: 1em; height: 1em; vertical-align: -0.15em; fill: currentColor; overflow: hidden; } </style>

 //src/icons/index.js import Vue from 'vue' import SvgIcon from '@/components/SvgIcon' //图标自动加载 const req = require.context('./svg', false, /\.svg$/) req.keys().map(req) Vue.component('svg-icon', SvgIcon) //main.js import "./icons";

 <svg-icon icon-class="hg"></svg-icon>

 import Vue from "vue"; import Router from "vue-router"; import Layout from '@/layout'; // 布局页 Vue.use(Router); // 通用页面:不需要守卫，可直接访问 export const constRoutes = [ { path: "/login", component: () => import("@/views/Login"), hidden: true // 导航菜单忽略该项 }, { path: "/", component: Layout,// 应用布局 redirect: "/home", children: [ { path: "home", component: () => import(/* webpackChunkName: "home" */ "@/views/Home.vue"), name: "home", meta: { title: "Home", // 导航菜单项标题 icon: "hg" // 导航菜单项图标 } }] }]; // 权限页面:受保护页面，要求用户登录并拥有访问权限的角色才能访问 export const asyncRoutes = [ { path: "/about", component: Layout, redirect: "/about/index", children: [ { path: "index", component: () => import(/* webpackChunkName: "home" */ "@/views/About.vue"), name: "about", meta: { title: "About", icon: "hg", roles: ['admin', 'editor'] }, } ] } ]; export default new Router({ mode: "history", base: process.env.BASE_URL, routes: constRoutes });

 <template> <div class="app-wrapper"> <div class="main-container"> <router-view /> </div> </div> </template>

 <template> <div id="app"> <!-- 路由 --> <div id="nav"> <router-link to="/"> <svg-icon icon-class="wx"></svg-icon> <!-- <svg> <use xlink:href="#icon-wx" rel="external nofollow" ></use> </svg>--> Home </router-link>| <router-link to="/about"> <svg-icon icon-class="hg"></svg-icon>About </router-link> </div> <!-- 4.路由视图 --> <!-- 问题：router-link和router-view是哪来的 --> <router-view></router-view> </div> </template> <script> export default { name: "app", components: {} }; </script> <style> #app { font-family: "Avenir", Helvetica, Arial, sans-serif; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-align: center; color: #2c3e50; margin-top: 60px; } </style>

 <template> <div class="about"> <h2>This is an about page</h2> </div> </template>

 <template> <div class="home"> <img alt="Vue logo" src="../assets/logo.png" /> <HelloWorld msg="Welcome to Your Vue.js App" /> </div> </template> <script> // @ is an alias to /src import HelloWorld from "@/components/HelloWorld.vue"; export default { name: "home", components: { HelloWorld } }; </script>

 <template> <div> <h3>用户登录</h3> <div> <input type="text" v-model="username" /> <button @click="login">登录</button> </div> </div> </template> <script> export default { data() { return { username: "admin" }; }, methods: { login() { this.$store .dispatch("user/login", { username: this.username }) .then(() => { this.$router.push({ path: this.$route.query.redirect || "/" }); }) .catch(error => { alert(error); }); } } }; </script>

 import router from "./router"; import store from "./store"; const whiteList = ["/home", "/login"]; // 无需令牌白名单 // 全局路由守卫 router.beforeEach(async (to, from, next) => { // 获取令牌判断用户是否登录 const hasToken = localStorage.getItem("token"); // 已登录 if (hasToken) { if (to.path === "/login") { // 若已登录没有必要显示登录页，重定向至首页 next({ path: "/" }); } else { // 去其他路由，暂时放过 // next() // 接下来执行用户角色逻辑, todo // 1.判断用户是否拥有角色 const hasRoles = store.state.user.roles && store.state.user.roles.length > 0; if (hasRoles) { next(); } else { // 2.获取用户角色 const roles = await store.dispatch("user/getInfo"); const accessRoutes = await store.dispatch("permission/generateRoutes", roles); // 动态添加路由到路由器 router.addRoutes(accessRoutes); // 跳转 next({ ...to }); } } } else { // 未登录 if (whiteList.indexOf(to.path) !== -1) { // 白名单中路由放过 next(); } else { // 重定向至登录页 next(`/login?redirect=${to.path}`); } } });

 import Vue from "vue"; import Vuex from "vuex"; import user from './modules/user' import permission from './modules/permission' Vue.use(Vuex); export default new Vuex.Store({ modules: { user, permission } });

 const state = { token: localStorage.getItem("token"), // 其他用户信息 roles: [] }; const mutations = { SET_TOKEN: (state, token) => { state.token = token; }, SET_ROLES: (state, roles) => { state.roles = roles; }, }; const actions = { // 模拟用户登录 login({ commit }, userInfo) { const { username } = userInfo; return new Promise((resolve, reject) => { setTimeout(() => { if (username === "admin" || username === "jerry") { commit("SET_TOKEN", username); localStorage.setItem("token", username); resolve(); } else { reject("用户名、密码错误"); } }, 1000); }); }, getInfo({ commit, state }) { return new Promise((resolve) => { setTimeout(() => { const roles = state.token === 'admin' ? ['admin'] : ['editor'] commit('SET_ROLES', roles) resolve(roles) }, 1000); }) } }; export default { namespaced: true, state, mutations, actions, };

 // 导入asyncRoutes，过滤它看当前用户是否拥有响应权限 import {asyncRoutes, constRoutes} from '@/router' const state = { routes: [], // 完整路由 addRoutes: [], // 权限路由 } const mutations = { // routes: 用户可访问的权限路由 SET_ROUTES: (state, routes) => { state.addRoutes = routes; state.routes = constRoutes.concat(routes); } } const actions = { generateRoutes({commit}, roles) { // 过滤出能访问的路由表 const routes = filterAsyncRoutes(asyncRoutes, roles) commit('SET_ROUTES', routes) return routes; } } function filterAsyncRoutes(routes, roles) { const res = []; routes.forEach(route => { // 复制一份路由 const tmp = {...route}; // 拥有访问权限 if (hasPermission(roles, tmp)) { if (tmp.children) { // 递归子路由 tmp.children = filterAsyncRoutes(tmp.children, roles) } res.push(tmp); } }) return res; } function hasPermission(roles, route) { if (route.meta && route.meta.roles) { return roles.some(role => route.meta.roles.includes(role)) } else { // 路由定义中没有roles选项，则不需要权限即可访问 return true; } } export default { namespaced: true, state, mutations, actions }