npm install axios -S
	或者
	npm i axios -S

	import axios from 'axios'
	Vue.prototype.$axios = axios //将axios绑定到vue的原型上

	module.exports = {
	 publicPath: './',
	 //配置跨域请求
	 devServer: {
	  open: true, //是否自动打开浏览器
	  https: false, //是否开启https
	  hotOnly: false,
	  proxy: { // 配置跨域
	   '/api': {
	    target: 'http://********', //请求接口域名 
	    ws: true,
	    secure: false,
	    changOrigin: true, //是否允许跨越
	    pathRewrite: {
	     '^/api': ''
	    }
	   }
	  },
	  before: app => { }
	 }
	}

import axios from 'axios'
//这里引用了element的loading全屏加载
import { Loading } from "element-ui";

const service = axios.create({
 baseURL: '/',
 timeout: 30000 // 设置请求超时时间
})
let loading = "";
// 请求拦截器
service.interceptors.request.use(
 (config) => {
  // 在请求发送之前做一些处理
  if (!(config.headers['Content-Type'])) {
   loading = Loading.service({
    lock: true,
    text: "加载中...",
    spinner: "el-icon-loading",
    background: "rgba(255,255,255,0.7)",
    customClass: "request-loading",
   });
   if (config.method == 'post') {
    config.headers['Content-Type'] =
     'application/json;charset=UTF-8'
    for (var key in config.data) {
     if (config.data[key] === '') {
      delete config.data[key]
     }
    }
    config.data = JSON.stringify(config.data)
   } else {
    config.headers['Content-Type'] =
     'application/x-www-form-urlencoded;charset=UTF-8'
    config.data = JSON.stringify(config.data)
   }
  }
  const token = "token"
  // 让每个请求携带token-- ['X-Token']为自定义key 请根据实际情况自行修改
  if (token) {
   config.headers['Authorization'] = token
  }
  return config
 },
 (error) => {
  loading.close();
  // 发送失败
  console.log(error)
  return Promise.reject(error)
 }
)

// 响应拦截器
service.interceptors.response.use(
 (response) => {

  loading.close();
  // dataAxios 是 axios 返回数据中的 data
  // loadingInstance.close();
  const dataAxios = response.data
  // 这个状态码是和后端约定的

  return dataAxios
 },
 (error) => {
  return Promise.reject(error)
 }
)

	export default service

 // 引入封装好的axios
 // ps:如果没有封装，正常引入axios即可
  import axios from "./api";
	// 	/api为配置跨域的路径变量
  let reportUpload= '/api/report/upload'
  export const Upload= () => {
   return axios.get( reportUpload )
  }

// 引入封装好的接口
 	import { Upload} from "@/api/http.js"; 

// 调用时使用
 async Upload() {
  let { result } = await getlist ();
  	console.log(result)
 },