axios的二次封装

import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'
import { showFullScreenLoading, tryHideFullScreenLoading } from './loading'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 15000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent
    showFullScreenLoading()
    config.headers['platform'] = 'app_web_manager'
    if (store.getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['Authorization'] = getToken()
    }
    return config
  },
  error => {
    tryHideFullScreenLoading()
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    tryHideFullScreenLoading()
    const res = response.data

    // if the custom code is not 20000, it is judged as an error.
    if (res.code !== 20000) {
      Message({
        message: res.message || '获取数据失败，请检查请求',
        type: 'error',
        duration: 5 * 1000
      })

      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
        // to re-login
        MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
          confirmButtonText: 'Re-Login',
          cancelButtonText: 'Cancel',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })
      }
      return res.message || '获取数据失败，请检查请求'
    } else {
      return res
    }
  },
  error => {
    console.log('err' + error) // for debug
    console.log('err' + error.response.status) // for debug
    tryHideFullScreenLoading()
    if (error && error.response) {
      switch (error.response.status) {
        case 400:
          error.message = '请求错误'
          break
        case 401:
          error.message = '未授权，请登录'
          break
        case 403:
          error.message = '拒绝访问'
          break
        case 404:
          error.message = `请求地址出错:地址${error.response.config.url}`
          break
        case 405:
          error.message = `不允许的请求方法`
          break
        case 408:
          error.message = '请求超时'
          break
        case 500:
          error.message = '服务器内部错误'
          break
        case 501:
          error.message = '服务未实现'
          break
        case 502:
          error.message = '网关错误'
          break
        case 503:
          error.message = '服务不可用'
          break
        case 504:
          error.message = '网关超时'
          break
        case 505:
          error.message = 'HTTP版本不受支持'
          break
        default:
          break
      }
    }
    Message({
      message: `服务器响应失败,错误信息: ${error.message}`,
      type: 'error'
    })
    return Promise.reject(error)
  }
)

export default service