vue中如何實現(xiàn)后臺管理系統(tǒng)的權(quán)限控制的方法示例

// router/index.js
/**
 * 根據(jù)權(quán)限匹配路由
 * @param {array} permission 權(quán)限列表（菜單列表）
 * @param {array} asyncRouter 異步路由對象
 */
function routerMatch(permission, asyncRouter) {
 return new Promise((resolve) => {
 const routers = [];
 // 創(chuàng)建路由
 function createRouter(permission) {
 // 根據(jù)路徑匹配到的router對象添加到routers中即可
 permission.forEach((item) => {
 if (item.children && item.children.length) {
 createRouter(item.children)
 }
 let path = item.path;
 // 循環(huán)異步路由，將符合權(quán)限列表的路由加入到routers中
 asyncRouter.find((s) => {
 if (s.path === '') {
 s.children.find((y) => {
 if (y.path === path) {
 y.meta.permission = item.permission;
 routers.push(s);
 }
 })
 }
 if (s.path === path) {
 s.meta.permission = item.permission;
 routers.push(s);
 }
 })
 })
 }

 createRouter(permission)
 resolve([routers])
 })
}

// router/index.js
router.beforeEach((to, form, next) => {
 if (sessionStorage.getItem('token')) {
 if (to.path === '/') {
 router.replace('/index')
 } else {
 console.log(store.state.list.length);
 if (store.state.list.length === 0) {
 //如果沒有權(quán)限列表，將重新向后臺請求一次
 store.dispatch('getPermission').then(res => {
 //調(diào)用權(quán)限匹配的方法
 routerMatch(res, asyncRouterMap).then(res => {
 //將匹配出來的權(quán)限列表進行addRoutes
 router.addRoutes(res[0]);
 next(to.path)
 })
 }).catch(() => {
 router.replace('/')
 })
 } else {
 if (to.matched.length) {
 next()
 } else {
 router.replace('/')
 }
 }
 }
 } else {
 if (whiteList.indexOf(to.path) >= 0) {
 next()
 } else {
 router.replace('/')
 }
 }
});

//異步路由（需要權(quán)限的頁面）
export const asyncRouterMap = [

 {
 path: '/resource',
 name: 'nav.Resource',
 meta: {
 permission: []
 },
 component: (resolve) => require(['@/components/Resource/resource'], resolve)
 },
 {
 path: '/template',
 name: 'nav.Template',
 meta: {
 permission: []
 },
 component: (resolve) => require(['@/components/Template/template'], resolve)
 },
 {
 path: '/generalSet',
 name: 'nav.System',
 meta: {
 permission: []
 },
 component: (resolve) => require(['@/components/SystemSet/generalSet'], resolve)
 },
 {
 path: '',
 name: 'nav.Log',
 component: App,
 children: [
 {
 path: '/userLog',
 name: 'nav.UserLog',
 meta: {
 permission: []
 },
 component: (resolve) => require(['@/components/Log/userLog'], resolve),
 },
 {
 path: '/operatingLog',
 name: 'nav.SystemLog',
 meta: {
 permission: []
 },
 component: (resolve) => require(['@/components/Log/operatingLog'], resolve),
 },
 ]
 }
 ]
];

asyncRouter.find((s) => {
 if (s.path === '') {
 s.children.find((y) => {
 if (y.path === path) {
 //賦值
 y.meta.permission = item.permission;
 routers.push(s);
 }
 })
 }
 if (s.path === path) {
 s.meta.permission = item.permission;
 routers.push(s);
 }
 })

<a @click="upload" v-allow="'3'"></a> /* 3代表一個上傳權(quán)限的ID，權(quán)限中有3則顯示按鈕 */

//main.js
//按扭權(quán)限指令
Vue.directive('allow', {
 inserted: (el, binding, vnode) => {
 let permissionList = vnode.context.$route.meta.permission;
 if (!permissionList.includes(binding.value)) {
 el.parentNode.removeChild(el)
 }
 }
})