tuanfeng-pc-mer/src/permission.js

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 {
  getUserId,
  getToken,
  // setBtns
} from '@/utils/auth' // get token from cookie
import { adminBuild } from '@/api/user'
import { filterAsyncRouter } from '@/store/modules/permission.js'
import getPageTitle from '@/utils/get-page-title'

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

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

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()
    } else {
      // const hasGetUserInfo = store.getters.name
      // if (hasGetUserInfo) {
      //   next()
      // } else {
      //   try {
      //     // get user info
      //     // await store.dispatch('user/getInfo')

      //     next()
      //   } catch (error) {
      //     // remove token and go to login page to re-login
      //     await store.dispatch('user/resetToken')
      //     Message.error(error || 'Has Error')
      //     next(`/login?redirect=${to.path}`)
      //     NProgress.done()
      //   }
      // }
      if (store.getters.routers.length === 0) { // 条件加载
        loadMenus(next, to)
        store.commit('SET_LOAD', true)
      } else if (!store.getters.hasLoad) { // 是否加载过动态路由
        // // 修改hasLoad，防止死循环
        store.commit('SET_LOAD', true)
        loadMenus(next, to)
      } else {
        try {
          next()
        } catch (error) {
          // remove token and go to login page to re-login
          await store.dispatch('user/resetToken')
          Message.error(error || 'Has Error')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
        }
      }
    }
  } else {
    /* has no token*/

    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }
})

export const loadMenus = (next, to) => {
  adminBuild({ platformUserId: getUserId() }).then(res => {
    // setBtns(JSON.stringify(res.buttons))
    const asyncRouter = filterAsyncRouter(res.data)
    // 画布设置
    asyncRouter.forEach(item => {
      if (item.path.indexOf('.html') !== -1) {
        item.path = item.path + '?' + getToken()
      }
    })
    // 异常跳转添加
    asyncRouter.push({ path: '*', redirect: '/404', hidden: true })
    store.dispatch('GenerateRoutes', asyncRouter).then(() => { // 存储路由
      router.addRoutes(asyncRouter) // 动态添加可访问路由表
      next({ ...to, replace: true })
    })
  })
}

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