vuejs怎么请求拦截

export function isLogin() {
  if (localStorage.getItem('token')) {
   return true;
  } else {
   return false;
  }
 }
 export function getToken() {
  return localStorage.getItem('token');
 }
 export function setToken(token) {
  localStorage.setItem('token', token);
 }
 
 export function removeToken() {
  localStorage.removeItem('token');
 }

import axios from 'axios';
import { getToken } from './auth';

const instance = axios.create({
   timeout: 5000,
   baseURL: 'https://xxxxxxxxx/xxxx/',
 });

// 请求拦截
 instance.interceptors.request.use(
  function(config) {
   // eslint-disable-next-line prettier/prettier
   config.headers.authorization = 'Bearer ' + getToken();
   return config;
  },
  function(error) {
   // Do something with request error
   return Promise.reject(error);
  }
 );
 
 instance.interceptors.response.use(
  response => {
   return response;
  },
  error => {
   if (error.response.status == 401) {
    window.location.href = '/#/login';
   }
   if (error.response.status == 404) {
    window.location.href = '/404.html';
   }
   return Promise.reject(error.response.data);
  }
 );

 /**
  * 获取数据 get请求
  * @param {*} url
  * @param {*} config
  */
 export const get = (url, config) => instance.get(url, config);
 
 /**
  * post请求
  * @param {*} url
  * @param {*} data
  * @param {*} config
  */
 export const post = (url, data) => instance.post(url, data);
 /**
  * put
  * @param {*} url
  * @param {*} data
  * @param {*} config
  */
 export const put = (url, data, config) => instance.put(url, data, config);
 
 /**
  * delete
  * @param {*} url
  * @param {*} config
  */
 export const remove = (url, config) => instance.delete(url, config);