axios.interceptors.request.use(config => {
        config.headers['token'] = cookie.get('token')
        return config
})

axios.interceptors.response.use(res=>{},{response}=>{
        if (response.data.code === 40099 || response.data.code === 40098) { //token過期或者錯誤
                router.push('/login')
        }
})

const routerMap = [
  {
    path: '/permission',
    component: Layout,
    redirect: '/permission/index',
    alwaysShow: true, // will always show the root menu
    meta: {
      title: 'permission',
      icon: 'lock',
      roles: ['admin', 'editor'] // you can set roles in root nav
    },
    children: [
      {
        path: 'page',
        component: () => import('@/views/permission/page'),
        name: 'pagePermission',
        meta: {
          title: 'pagePermission',
          roles: ['admin'] // or you can only set roles in sub nav
        }
      }, 
      {
        path: 'directive',
        component: () => import('@/views/permission/directive'),
        name: 'directivePermission',
        meta: {
          title: 'directivePermission'
        // if do not set roles, means: this page does not require permission
        }
      }]
  }
]

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' // getToken from cookie

NProgress.configure({ showSpinner: false })// NProgress Configuration

// permission judge function
function hasPermission(roles, permissionRoles) {
  if (roles.indexOf('admin') >= 0) return true // admin permission passed directly
  if (!permissionRoles) return true
  return roles.some(role => permissionRoles.indexOf(role) >= 0)
}

const whiteList = ['/login', '/authredirect']// no redirect whitelist

router.beforeEach((to, from, next) => {
  NProgress.start() // start progress bar

  if (getToken()) { // determine if there has token
    /* has token*/
    if (to.path === '/login') {
      next({ path: '/' })
      NProgress.done() // if current page is dashboard will not trigger af terEach hook, so manually handle it
    } else {
      if (store.getters.roles.length === 0) { // 判斷當前用戶是否已拉取完user_info信息
        store.dispatch('GetUserInfo').then(res => { // 拉取user_info信息
          const roles = res.data.roles // note:  roles must be a array! such as: ['editor','develop'] 
          store.dispatch('GenerateRoutes', { roles }).then(() => { //根據(jù) roles權(quán)限生成可訪問的路由表 
            router.addRoutes(store.getters.addRouters) // 動態(tài)添加可訪問路由表 
            next({ ...to, replace: true }) // hack方法 確保addRoutes已完成,set the replace: true so the navigation will not leave a history record 
          })
      }).catch((err) => {
        store.dispatch('FedLogOut').then(() => {
          Message.error(err || 'Verification failed, please login again')
          next({ path: '/' })
          })
      })
    } else {
        // 沒有動態(tài)改變權(quán)限的需求可直接next() 刪除下方權(quán)限判斷 ↓
        if (hasPermission(store.getters.roles, to.meta.roles)) {
          next()//
        } else {
          next({ path: '/401', replace: true, query: { noGoBack: true }})
        }
        // 可刪 ↑
      }
    }
} else {
  /* has no token*/
  if (whiteList.indexOf(to.path) !== -1) { // 在免登錄白名單，直接進入
    next()
  } else {
    next('/login') // 否則全部重定向到登錄頁
    NProgress.done() // if current page is login will not trigger afterE ach hook, so manually handle it
  }
}
})

router.afterEach(() => {
  NProgress.done() // finish progress bar
})

{
 name: "login",
 path: "/login",
 component: () => import("@/pages/Login.vue")
}

function hasPermission(router, accessMenu) {
  if (whiteList.indexOf(router.path) !== -1) {
    return true;
  }
  let menu = Util.getMenuByName(router.name, accessMenu);
  if (menu.name) {
    return true;
  }
  return false;
}

Router.beforeEach(async (to, from, next) => {
  if (getToken()) {
    let userInfo = store.state.user.userInfo;
    if (!userInfo.name) {
      try {
        await store.dispatch("GetUserInfo")
        await store.dispatch('updateAccessMenu')
        if (to.path === '/login') {
          next({ name: 'home_index' })
        } else {
          //Util.toDefaultPage([...routers], to.name, router, next);
          next({ ...to, replace: true }) // 菜單權(quán)限更新完成，重新進一次當前路由
        }
      } 
      catch (e) {
        if (whiteList.indexOf(to.path) !== -1) { // 在免登錄白名單，直接進入
          next()
        } else {
          next('/login')
        }
      }
    } else {
      if (to.path === '/login') {
        next({ name: 'home_index' })
      } else {
        if (hasPermission(to, store.getters.accessMenu)) {
          Util.toDefaultPage(store.getters.accessMenu,to, routes, next);
        } else {
          next({ path: '/403',replace:true })
        }
      }
    }
  } else {
    if (whiteList.indexOf(to.path) !== -1) { // 在免登錄白名單，直接進入 
      next()
    } else {
      next('/login')
    }
  }
  
  let menu = Util.getMenuByName(to.name, store.getters.accessMenu);
  Util.title(menu.title);
});

Router.afterEach((to) => {
  window.scrollTo(0, 0);
});

const Home = () => import("../pages/Home.vue");
const UserInfo = () => import("../pages/UserInfo.vue");
     
export default {
 home: Home,
 userInfo: UserInfo
};

[
  {
    name: "home",
    path: "/",
    component: "home"
  },
  {
    name: "home",
    path: "/userinfo",
    component: "userInfo"
  }
]

const routes = [
  {
    path: '/dashboard',
    component: Dashboard,
    meta: {
      btnPermissions: {
        view: true,
        edit: false,
        delete: false,
      },
    },
  },
  {
    path: '/users',
    component: Users,
    meta: {
      btnPermissions: {
        view: true,
        edit: true,
        delete: true,
      },
    },
  },
  // 其他路由...
];

<template>
  <div>
    <button v-if="checkButtonPermissions('view')">查看</button>
    <button v-if="checkButtonPermissions('edit')">編輯</button>
    <button v-if="checkButtonPermissions('delete')">刪除</button>
  </div>
</template>

<script>
export default {
  methods: {
    checkButtonPermissions(permission) {
      const route = this.$router.currentRoute; // 獲取當前路由對象
      const meta = route.meta.btnPermissions; // 獲取當前路由的meta.btnPermissions對象
      return meta[permission]; // 返回指定權(quán)限的值
    },
  },
};
</script>

{
  path: '/permission',
  component: Layout,
  name: '權(quán)限測試',
  meta: {
    btnPermissions: ['admin', 'supper', 'normal'] // 頁面需要的權(quán)限
  }, 
  children: [
    {
      path: 'supper',
      component: _import('system/supper'),
      name: '權(quán)限測試',
      meta: {
        btnPermissions: ['admin', 'supper']
      } // 頁面需要的權(quán)限
    },
    {
      path: 'normal',
      component: _import('system/normal'),
      name: '權(quán)限測試',
      meta: {
        btnPermissions: ['admin']
      } // 頁面需要的權(quán)限
    }
  ]
}

import Vue from 'vue'

/**權(quán)限指令**/
const has = Vue.directive('has', {
  bind: function (el, binding, vnode) {
    // 獲取頁面按鈕權(quán)限
    let btnPermissionsArr = [];

    if(binding.value){
    // 如果指令傳值，獲取指令參數(shù)，根據(jù)指令參數(shù)和當前登錄人按鈕權(quán)限做比較。
      btnPermissionsArr = Array.of(binding.value);
    }else{
    // 否則獲取路由中的參數(shù)，根據(jù)路由的btnPermissionsArr和當前登錄人按鈕權(quán)限做比較。
      btnPermissionsArr = vnode.context.$route.meta.btnPermissions;
    }
    if (!Vue.prototype.$_has(btnPermissionsArr)) {
      el.parentNode.removeChild(el);
    }
  }
});

// 權(quán)限檢查方法
Vue.prototype.$_has = function (value) {
  let isExist = false;
  
  // 獲取用戶按鈕權(quán)限
  let btnPermissionsStr = sessionStorage.getItem("btnPermissions");

  if (btnPermissionsStr == undefined || btnPermissionsStr == null) {
    return false;
  }
  if (value.indexOf(btnPermissionsStr) > -1) {
    isExist = true;
  }
  return isExist;
};

export {has}

<el-button @click='editClick' type="primary" v-has>編輯</el-button>