vue下axios拦截器token刷新机制的实例代码

//引入安装的axios插件
import axios from 'axios'
import router from '@/router';
import Vue from 'vue'
const qs = require("qs");
let _this = new Vue();
let isLock = false;
let refreshSubscribers = [];
//判断token是否过期
function isTokenExpired(token) {
 let expires_time = JSON.parse(token).expires_time;
 let curentTime = new Date().getTime();
 if (curentTime >= expires_time) {
  return true;
 } else {
  return false;
 }
}
//获取Token对象
function getToken() {
 return localStorage.getItem("token");
}
//push所有请求到数组中
function subscribeTokenRefresh(cb) {
 refreshSubscribers.push(cb)
}

//刷新请求（refreshSubscribers数组中的请求得到新的token之后会自执行，用新的token去请求数据）
function onRrefreshed(token) {
 refreshSubscribers.map(cb => cb(token))
}
//刷新token
function refreshToken(config, token, resolve, reject) {
 let data = { refresh_token: JSON.parse(token).refresh_token };
 axios({
  method: "post",
  url: "xxxxxx/refreshToken",//刷新token的接口
  headers: {
   "Content-Type": "application/x-www-form-urlencoded",
   "Authorization": "Basic b3JkZXItc2VydmVyOjEyMzQ1Ng=="
  },
  data: qs.stringify(data)
 }).then(res => {
  isLock = false;//释放锁
  if (res.data.code === 101) {
   _this.$message.error('登录状态已失效，请重新登录。');
   localStorage.removeItem("token");
   router.push({
    path: "/login"
   });
   return;
  }

  let expires_time = new Date().getTime() + parseInt(res.data.data.expires_in * 0.8) * 1000;
  let token = JSON.parse(localStorage.getItem("token"));
  token.expires_time = expires_time;
  token.access_token = res.data.data.access_token;
  localStorage.setItem("token", JSON.stringify(token));

  config.headers.Authorization = 'Bearer ' + res.data.data.access_token;
  resolve(config);
  //执行数组里的函数,重新发起被挂起的请求
  onRrefreshed(res.data.data.access_token)
  //清空数组中保存的请求
  refreshSubscribers = []
 }).catch(err => {
  return err;
 });
}

function request(newOptions, resolve, reject) {
 axios({
  method: newOptions.method,
  url: newOptions.url,
  data: newOptions.type == "form" "json"
  };
  const newOptions = {
   ...defaultOptions,
   ...options
  };
  //headers默认传递json格式数据，这里也可以设置token，每次调用都会携带
if (localStorage.getItem("token")) {
    newOptions.headers = {
     // 'Authorization': 'Basic b3JkZXItc2VydmVyOjEyMzQ1Ng==',
     'content-Type': newOptions.type == 'form' "token")).access_token,
     ...newOptions.headers
    };
   } else {
    newOptions.headers = {
     'content-Type': newOptions.type == 'form' "post",
      url: "/xxxxx/user",
      type: "form",
      headers: { Authorization:"Basicb3JkZXItc2VydmVyOjEyMzQ1Ng==" },
      data: {}
     }).then(function(res) {
        let expires_time =
         new Date().getTime() +
         parseInt(res.data.token.expires_in * 0.8) * 1000;
         let token = res.data.token;
         token.expires_time = expires_time;
        localStorage.setItem("token", JSON.stringify(token));
    
      }).catch(function(err) {
       console.log(err);
      });        

//退出清空token
this.http({
    method: "get",
    url: "/xxxxx/logout",
    data: {}
   }).then(function(res) {
 localStorage.removeItem("token");
  }).catch(function(err) {
     console.log(err);
    });