很多时候，需要动态加载路由，来控制权限。
基于element ui 得动态路由写法
1.设置不需要权限的路由constantRoutes和需要判断权限的路由asyncRoutes ，动态过滤需要判断权限的路由，并通过addRoutes添加路由
router/index,js
/*
* @Descripttion:
* @Version:
* @Date: 2021-06-11 13:58:03
*/
import Vue from 'vue'
import Router from 'vue-router'
Vue.use(Router)
/* Layout */
import Layout from '@/layout'
/**
* constantRoutes
* a base page that does not have permission requirements
* all roles can be accessed
*/
// 这里放着不需要判断权限的路由
export const constantRoutes = [{
path: '/login',
component: () => import('@/views/login/index'),
hidden: true
},
// 作品评审
{
path: '/theme',
redirect: '/theme/list',
name: 'theme',
component: Layout,
meta: {
title: '作品评审',
icon: 'dashboard',
},
children: [{
meta: {
title: '作品评审',
icon: 'dashboard',
},
name: 'themelist',
path: 'list',
component: () => import('@/views/theme/list'),
},
{
meta: {
title: '作品评审',
icon: 'dashboard',
activeMenu: '/theme/list'
},
name: 'themeadd',
hidden: true,
path: 'add',
component: () => import('@/views/theme/add'),
},
]
},
]
// 需要判断权限的路由
export const asyncRoutes = [{
path: '/',
redirect: '/list',
name: 'dat',
component: Layout,
meta: {
title: '数据管理',
icon: 'example',
// 区分权限得标识
roles: ["管理员"]
},
children: [{
meta: {
title: '数据管理',
icon: 'example'
},
path: 'list',
name: 'manageList',
component: () => import('@/views/area/list.vue'),
},
{
meta: {
title: '数据管理',
icon: 'example',
activeMenu: '/list'
},
path: 'add',
name: 'manageAdd',
component: () => import('@/views/area/add.vue'),
hidden: true
},
]
},
// 账号管理
{
path: '/tag',
redirect: '/tag/list',
name: 'tag',
component: Layout,
meta: {
title: '账号管理',
icon: 'example',
// 区分权限得标识
roles: ["管理员"]
},
children: [{
meta: {
title: '账号管理',
icon: 'example'
},
path: 'list',
name: 'taglist',
component: () => import('@/views/tag/list.vue'),
},
{
meta: {
title: '账号管理',
icon: 'example',
activeMenu: '/tag/list'
},
path: 'add',
name: 'tagadd',
component: () => import('@/views/tag/add.vue'),
hidden: true
},
]
},
{
path: '*',
redirect: '/404',
hidden: true
}
]
const createRouter = () => new Router({
// mode: 'history', // require service support
scrollBehavior: () => ({
y: 0
}),
routes: constantRoutes
})
const router = createRouter()
// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
const newRouter = createRouter()
router.matcher = newRouter.matcher // reset router
}
router.beforeEach((to, from, next) => {
if (to.path === '/login') {
next();
} else {
let token = localStorage.getItem('Authorization');
if (token === 'null' || token === '') {
next('/login');
} else {
next();
}
}
});
export default router
登录login.vue
this.$store.dispatch("user/login", this.loginForm)store中user模块 store/modules/user.js
import {
login,
logout,
getInfo
} from '@/api/user'
import {
getToken,
setToken,
removeToken
} from '@/utils/auth'
import router, {
resetRouter
} from '@/router'
const state = {
token: getToken(),
name: '',
avatar: '',
introduction: '',
roles: ""
}
const mutations = {
SET_TOKEN: (state, token) => {
state.token = token
},
SET_INTRODUCTION: (state, introduction) => {
state.introduction = introduction
},
SET_NAME: (state, name) => {
state.name = name
},
SET_AVATAR: (state, avatar) => {
state.avatar = avatar
},
SET_ROLES: (state, roles) => {
state.roles = roles
}
}
const actions = {
// 登录
login({
commit
}, userInfo) {
const {
username,
password
} = userInfo
return new Promise((resolve, reject) => {
// 数据结构
// var res={
// token:"123",
// username:"123",
// role:"管理员"
// }
// 调用登录方法 走接口
login({
username: username.trim(),
password: password
}).then(response => {
console.log(response)
var res = response.data;
// 登录成功后将token存储在cookie之中
setToken(res.token)
sessionStorage.setItem('username', res.username)
sessionStorage.setItem('role', res.role)
sessionStorage.setItem('id', res.id)
commit('SET_NAME', res.username)
commit('SET_TOKEN', res.token)
// commit('SET_ROLES', res.role)
// commit('SET_ROLES', response.data.role)
resolve()
}).catch(error => {
reject(error)
})
})
},
// 设置角色
setRole({
commit
}, role) {
commit('SET_ROLES', role)
},
// 等处登录
logout({
commit,
state,
dispatch
}) {
return new Promise((resolve, reject) => {
logout(state.token).then(() => {
commit('SET_TOKEN', '')
commit('SET_ROLES', "")
removeToken()
resetRouter()
// reset visited views and cached views
// to fixed https://github.com/PanJiaChen/vue-element-admin/issues/2485
dispatch('tagsView/delAllViews', null, {
root: true
})
resolve()
}).catch(error => {
reject(error)
})
})
},
// 移除token
resetToken({
commit
}) {
return new Promise(resolve => {
commit('SET_TOKEN', '')
commit('SET_ROLES', "")
removeToken()
resolve()
})
},
}
export default {
namespaced: true,
state,
mutations,
actions
}store/modules/permission.js 过滤动态路由，
/*
* @Descripttion:
* @Version: 1.0.1
* @Date: 2021-06-11 13:58:03
*/
import {
constantRoutes,
asyncRoutes
} from '@/router'
/**
* 使用meta.role确定当前用户是否具有权限
* @param roles
* @param route
*/
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
* @param routes asyncRoutes
* @param roles
*/
export function filterAsyncRoutes(routes, roles) {
console.log(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
}
const state = {
routes: [],
addRoutes: []
}
const mutations = {
SET_ROUTES: (state, routes) => {
state.addRoutes = routes;
state.routes = constantRoutes.concat(routes);
console.log(state.routes)
}
}
const actions = {
generateRoutes({
commit
}, roles) {
return new Promise(resolve => {
let accessedRoutes;
// 管理员是最高权限，所有路由均可访问得情况下 就把注释放出来
// if (roles.includes('管理员')) {
// accessedRoutes = asyncRoutes || []
// } else {
// 获取符合条件的需要添加的动态路由
accessedRoutes = filterAsyncRoutes(asyncRoutes, roles)
// }
commit('SET_ROUTES', accessedRoutes)
resolve(accessedRoutes)
})
}
}
export default {
namespaced: true,
state,
mutations,
actions
}
View Code
全局路由守卫 permission.js
/*
* @Descripttion:
* @Version: 1.0.1
* @Date: 2021-06-11 13:58:03
*/
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' // get token from cookie
import getPageTitle from '@/utils/get-page-title'
NProgress.configure({
showSpinner: false
}) // NProgress Configuration
router.beforeEach(async (to, from, next) => {
// start progress bar
NProgress.start()
// set page title
document.title = getPageTitle(to.meta.title)
// determine whether the user has logged in
const hasToken = getToken()
if (hasToken) {
if (to.path === '/login') {
// if is logged in, redirect to the home page
next({
path: '/'
})
NProgress.done() // hack: https://github.com/PanJiaChen/vue-element-admin/pull/2939
} else {
// determine whether the user has obtained his permission roles through getInfo
const hasRoles = store.getters.roles
if (hasRoles) {
next()
} else {
try {
// 登陆以后获取到用户角色，用来判断权限
const roles = sessionStorage.getItem('role')
// 写入角色
store.dispatch('user/setRole', roles)
// 获取需要动态添加得路由
const accessRoutes = await store.dispatch('permission/generateRoutes', [roles])
router.options.routes = store.getters.routes;
// 动态添加可访问路由
router.addRoutes(accessRoutes)
//hack方法以确保addRoutes是完整的
//设置replace:true，这样导航就不会留下历史记录
next({
...to,
replace: true
})
} catch (error) {
// 删除token并转到登录页以重新登录
await store.dispatch('user/resetToken')
Message.error(error || 'Has Error')
next(`/login?redirect=${to.path}`)
NProgress.done()
}
}
}
} else {
// 这里可以设置白名单 ，不需要判断得路由导航，例如注册，登录等，可以用数组，可以直接比较
if (to.path.includes('login')) {
next()
} else {
// 没有访问权限的其他页将重定向到登录页
next(`/login?redirect=${to.path}`)
NProgress.done()
}
}
})
router.afterEach(() => {
// finish progress bar
NProgress.done()
})
View Code
