vue中axios请求的封装

创建utils文件夹

安装axios

$ npm install axios -S

引入如下两个文件
1.axios.js

const VueAxios = {
    vm: {},
    // eslint-disable-next-line no-unused-vars
    install(Vue, instance) {
      if (this.installed) {
        return;
      }
      this.installed = true;
  
      if (!instance) {
        // eslint-disable-next-line no-console
        console.error("You have to install axios");
        return;
      }
  
      Vue.axios = instance;
  
      Object.defineProperties(Vue.prototype, {
        axios: {
          get: function get() {
            return instance;
          }
        },
        $http: {
          get: function get() {
            return instance;
          }
        }
      });
    }
  };
  
  export { VueAxios };

2.引入request.js文件

import axios from "axios";
import { VueAxios } from "./axios";
// import qs from "qs";  //需安装，按需引入
// 创建 axios 实例
/* eslint-disable */
const service = axios.create({
  baseURL:'http://192.168.199.195:8080',  //请求地址公共部分
  timeout: 6000, // 请求超时时间
  withCredentials: true,   //配置跨域
  // transformRequest: [
  //   function(data) {
  //     // 允许向服务器发送前，修改稿请求数据
  //     return qs.stringify(data); // 对data进行转换
  //   }
  // ]
});

const err = error => {   //响应异常拦截
  if (error.response) {
    const token = window.localStorage.getItem("token");
    if (error.response.status === 403) {
    		...
    }
    if (error.response.status === 401) {  //!(data.result && data.result.isLogin)
      if (token) {
        	window.localStorage.removeItem("token");
      }else{
       		....
      }
    }
  }
  return Promise.reject(error);
};

// request interceptor
service.interceptors.request.use(config => {   //请求拦截
  const token = window.localStorage.getItem("token");
  if (token) {
    config.headers["Authorization"] = token; // 让每个请求携带自定义 token 请根据实际情况自行修改
  }
  return config;
}, err);

// response interceptor
service.interceptors.response.use(response => {   //响应拦截
  return response.data;
}, err)

const installer = {
  vm: {},
  install(Vue) {
    Vue.use(VueAxios, service);
  }
};

export { installer as VueAxios, service as axios };