confing配置

import axios from 'axios';
import {Message,Loading} from 'element-ui';

var instance = axios.create({
  timeout: 30000,
  //baseURL : "/api",
  baseURL : process.env.NODE_ENV === 'production'? '/' :'/api'
  // withCredentials: true,
  // headers: {
  //   'Content-Type': 'application/json; charset=utf-8',
  //   //'Content-Type': 'application/x-www-form-urlencoded;charset=utf-8'
  //   //'X-Requested-With': 'XMLHttpRequest'  
  // }
});

let loading ;
var openFullScreen = function() {
  loading = Loading.service({
    lock: true,
    text: 'Loading',
    spinner: 'el-icon-loading',
    background: 'rgba(0, 0, 0, 0.7)'
  });
}
var closeFullScreen = function(){
  loading.close();
}

// 添加请求拦截器
instance.interceptors.request.use(function (config) {
  config.headers['X-Requested-With'] = 'XMLHttpRequest';
  if(!config.noLoading){
    openFullScreen();
  }

  // 在发送请求之前做些什么
  return config;
}, function (error) {
  // 对请求错误做些什么
  return Promise.reject(error);
});

const SSO_LOGIN_TEST ='登录地址
    SSO_LOGIN_PROD = 登录地址'


// 添加响应拦截器
instance.interceptors.response.use(function (response) {
  closeFullScreen();
  console.log(response  )
    if(response.config && response.config.responseType == 'blob') { 
      if(response.data.type!=='application/vnd.ms-excel') return false
      ////application/json;charset=utf-8
// application/vnd.ms-excel;charset=utf-8
// 'application/octet-stream;charset=utf-8'
           const blob = new Blob([response.data], { type: 'application/json;charset=UTF-8' }); //application/vnd.openxmlformats-officedocument.spreadsheetml.sheet这里表示xlsx类型
           if(response.config['filename']){
            var filename = decodeURI(response.config['filename']+'.xlsx');
           }else{
            var filename = decodeURI('ecl'+'.xlsx');
           }  
           if ('download' in document.createElement('a')) {
               const downloadElement = document.createElement('a');
               let href = '';
               if(window.URL) href = window.URL.createObjectURL(blob);
               else href = window.webkitURL.createObjectURL(blob);
           　　 downloadElement.href = href;
           　　 downloadElement.download = filename;
           　　 document.body.appendChild(downloadElement);
           　　 downloadElement.click();
           　　 if(window.URL) window.URL.revokeObjectURL(href);
               else window.webkitURL.revokeObjectURL(href);
               document.body.removeChild(downloadElement);
           } else {
               navigator.msSaveBlob(blob, filename);
           }
           return true;
       }
  //为枚举类型提供
  console.log(response)
  // if(Object.prototype.toString.call(response.data) === '[object Array]'){
  //   console.log(3333333)
  //   return response.data;
  // }
  if(response.data.success){
    return response.data.data;
  }else{
    Message.error(response.data.msg);
    return Promise.reject(response.data.msg);
  }
}, function (error) {
  // 对响应错误做点什么
  // Do something with response error
  closeFullScreen();
  let res = error.response
  if (error && res) {
    switch (res.status) {
      case 400:
        error.message = '错误请求'
        break
      case 401:
        debugger
        const location = window.location.host;
        console.log("收到401响应码，响应头location=" + location);
        if (location !== undefined && location.indexOf('test') !== -1) {
          window.location.href = SSO_LOGIN_TEST;
          // window.location.href = SSO_LOGIN_TEST
        }else{
          window.location.href = SSO_LOGIN_PROD;
        }
        break
      case 403:
        error.message = '拒绝访问'
        break
      case 404:
        error.message = '请求错误,未找到该资源'
        break
      case 405:
        error.message = '请求方法未允许'
        break
      case 408:
        error.message = '请求超时'
        break
      case 500:
        error.message = '服务器端出错'
        break
      case 501:
        error.message = '网络未实现'
        break
      case 502:
        error.message = '网络错误'
        break
      case 503:
        error.message = '服务不可用'
        break
      case 504:
        error.message = '网络超时'
        break
      case 505:
        error.message = 'http版本不支持该请求'
        break
      default:
        error.message = `连接错误${error.response.status}`
    }
    Message({
      message : error.message,
      type : "error"
    });
  }
  return Promise.reject(error);
});


export default {
  install(Vue, options) {
    Vue.$http = instance
  }
}