axios.js （捕获token自然过期）

import axios from "axios";
import store from "@/store/index";
import router from '@/router'
import { Message } from 'element-ui';
axios.interceptors.response.use((response)=> {
    if (response.data.code == 403) {
       store.dispatch('loginChange',false).then(()=>{
        // console.log(router.currentRoute);
        let {msg="未登录或登录失效"} = response.data;
        if(router.currentRoute.path!='/login'&&router.currentRoute.path!='/'){
          Message.warning(msg);
          router.replace({
            path: '/login',
            query: {
              redirect: router.currentRoute.fullPath,//重定向地址
            }
          });
        }
      })
    } else {
      return response.data;
    }
  }
);

router.js （捕获地址栏跳转）

import Vue from 'vue';
import Router from 'vue-router';
import store from "@/store/index.js"
import { URLS } from "@/config/api";
let v = new Vue();
router.beforeEach((to, from, next) => {
  //验证用户是否登录，如未登录，跳到登录，反之。
  if (!store.state.isLoginType) {
    //登录 验证
    v.axios.get(URLS.departmentDownList).then(res => {
        if (res && res.success) {
            //验证成功
            store.dispatch('loginChange', true).then(() => {
                //登录状态下，不可以跳转到登录界面 =>重定向
                to.path === '/login' ? next({ path: '/blueprint', replace: true }) : next();
            })
        } else {
            //验证失败
            //重定向登录 跳出循环
            to.path === '/login' ? next() : store.dispatch('loginChange', false).then(() => next({ path: '/login', replace: true }));
        }
    }).catch(err => {
        //验证失败
        to.path === '/login' ? next() : store.dispatch('loginChange', false).then(() => next({ path: '/login', replace: true }));
    })
  } else {
    //登录
    to.path === '/login' ? next({ path: from.path, replace: true }) : next();
  }
});

store/index.js vuex

import Vuex from 'vuex'
Vue.use(Vuex)
export default new Vuex.Store({
  state: {
    isLoginType:false,//用户是否登录
  },
  mutations: {
    /*
    * 更改用户登陆状态
    */
    loginChange(state, res) {
      if (res) {
        state.isLoginType = true;
      } else {
        state.isLoginType = false;
      }
    },
  },
  actions:{
    /*
    * 更改用户登陆状态
    */
    loginChange({commit},res) {
      commit('loginChange', res);
    },
  },
})