axios的封装

import axios from 'axios' // 引入axios
// import qs from 'qs' // 引入qs
import Cookies from 'js-cookie'
import router from '@/router/index'
import { Loading } from 'element-ui'
import { Message } from 'element-ui'

// axios 默认配置 更多配置查看Axios中文文档
axios.defaults.timeout = 10000 // 超时默认值
axios.defaults.baseURL = process.env.BASE_URL // 默认baseURL
axios.defaults.responseType = 'json' // 默认数据响应类型
axios.defaults.withCredentials = false // 表示跨域请求时是否需要使用凭证
axios.defaults.headers.common['Content-Type'] = 'application/json;charset=UTF-8'
axios.defaults.headers.common['Pragma'] = 'no-cache'
axios.defaults.headers.common['Cache-Control'] = 'no-cache' //头部添加不使用缓存，避免IE存在在当前页面没刷新的情况下再次请求接口直接拿缓存

// http request 拦截器
// 在ajax发送之前拦截
// 先获取是否有cookie或者stroge的author认证。读取的到的话，就添加到header，没有的话，就返回重新登录
axios.interceptors.request.use(config => {
 var userToken = Cookies.get('UserToken') ? Cookies.get('UserToken') : ''
 config.headers.common['Authorization'] = userToken
 return config
}, err => {
 return Promise.reject(err)
})
// 统一错误信息提示
function errorMsg(response) {
 var tipMes = ''
 switch (response.code) {
   case 'ECONNABORTED':
     tipMes = '登录超时，请重试'
     break
   case 'TokenExpired':
   case 'Unauthorized':
     tipMes = response.message + ',请重新登录'
     router.push('/nopermt')
     break
   case 'BadRequest':
   case 'InvalidParameter':
     tipMes = response.message + '，请检查相应数据是否正确'
     break
   case 'UserLocked':
     tipMes = response.message + '，请联系管理员'
     break
   case 'Forbidden':
   case 'ServerError':
     tipMes = response.message
     break
   default:
     tipMes = response.message
     break
 }
 return tipMes
}
//定义数据提示规则
function succMsg(response) {
 response = response.data
 var succMes = ''
 var noAlert = ['加载数据成功']
 if (response === null) return ''
 switch (response.type) {
   case 'SUCCESS':
     succMes = noAlert.indexOf(response.message) > -1 ? '' : response.message
     break
   default:
     break
 }
 return succMes
}
// http response 拦截器
// ajax请求回调之前拦截 对请求返回的信息做统一处理 比如error为401无权限则跳转到登陆界面
axios.interceptors.response.use(response => {
 if (errorMsg(response)) {
   response['errorFlag'] = true
   Message.error({ message: errorMsg(response), duration: 4000 })
 } else if (succMsg(response)) {
   Message.success({ message: succMsg(response), duration: 4000 })
 }
 return response
}, error => {
 var response = error.response ? error.response.data : error
 Message.error({ message: errorMsg(response), duration: 4000 })
 response['errorFlag'] = true
 return Promise.reject(response)
})
export default axios

const ajax = {
 /*
  * get 方法封装
  * @param url
  * @param data
  * @returns {Promise}
  */
 get(url, data = {}) {
   var loadInstance = Loading.service()
   return new Promise((resolve, reject) => {
     axios.get(url, {
       params: data
     }).then(response => {
       loadInstance.close()
       resolve(response.data)
     }, err => {
       loadInstance.close()
       reject(err)
     })
   })
 },
 /*
  * post 方法封装
  * @param url
  * @param data
  * @returns {Promise}
  */
 post(url, data = {}) {
   var loadInstance = Loading.service()
   return new Promise((resolve, reject) => {
     axios.defaults.headers.post['Content-Type'] = 'application/json;charset=UTF-8'  //默认配置没有设置Post请求的content-type
     axios.post(url, data).then(response => {
       loadInstance.close()
       resolve(response.data)
     }, err => {
       loadInstance.close()
       reject(err)
     })
   })
 }
}
export {
 ajax
}