nuxt.js中间件实现拦截权限判断的方法

import COOKIE from 'js-COOKIE' //npm install js-COOKIE --save

data(){
 return{
  redirectURL:'/'
 }
},
mounted() {
  let rediretUrl = this.$route.query.ref;
  if (rediretUrl){
  this.redirectURL = rediretUrl
  }
 }

submitLogin(ev) {
  var _this = this;
  this.$refs.ruleForm2.validate((valid) => {
   if (valid) {
   _this.logining = true
   var sendData = {
    username: _this.ruleForm2.account,
    password: _this.ruleForm2.pass,
    is_remember: _this.isRemember
   };
   //登录操作
   _this.$https.post('login/index', sendData).then(res => {
    if (res.status == 1) {
    //将服务端的token存入COOKIE当中
    COOKIE.set('token', res.data.token)
    //返回上一页
    _this.$router.push(_this.redirectURL)
    }else{
    _this.$message.warning(res.msg)
    }
   })
   } else {
   return false;
   }
  });
  },

import utils from '~/utils/utils'
 
export default function ({route, req, res, redirect}) {
 let isClient = process.client;
 let isServer = process.server;
 let redirectURL = '/login';
 var token, path
 //在服务端
 if (isServer) {
 let COOKIEs = utils.getCOOKIEsInServer(req)
 path = req.originalUrl;
 token = COOKIEs.token &＃63; COOKIEs.token : ''
 }
 //在客户端判读是否需要登陆
 if (isClient) {
 token = utils.getCOOKIEsInClient('token')
 path = route.path;
 }
 if (path) {
 redirectURL = '/login&＃63;ref=' + encodeURIComponent(path)
 }
 //需要进行权限判断的页面开头
 if (!token) {
  redirect(redirectURL)
 }
}

import COOKIE from 'js-COOKIE'
export default {
 //获取服务端COOKIE
 getCOOKIEsInServer:function (req) {
 let service_COOKIE = {};
 req && req.headers.COOKIE && req.headers.COOKIE.split(';').forEach(function (val) {
  let parts = val.split('=');
  service_COOKIE[parts[0].trim()] = (parts[1] || '').trim();
 });
 return service_COOKIE;
 },
 //获取客户端COOKIE
 getCOOKIEsInClient:function (key) {
 return COOKIE.get(key) &＃63; COOKIE.get(key) : ''
 }
}

middleware: 'userAuth',