demo/demo-web-ui/src/utils/request.js

import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken, getStorage } from '@/utils/auth'

// create an axios instance
console.log('dadadadad', process.env.VUE_APP_URL)
const service = axios.create({
  baseURL: process.env.VUE_APP_URL, // url = base url + request url
  timeout: 5000, // request timeout
  // headers: { 'Content-Type': 'application/json' }
})

// request interceptor
service.interceptors.request.use(
  config => {
    config.params = {
      ...config.params,
      _t: Date.parse(new Date()) / 1000
    }
    if (getStorage()) {

      config.headers['token'] = getStorage()
    }
    return config
  },
  error => {
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(

  response => {
    const res = response.data

    // if the custom code is not 20000, it is judged as an error.
    if (res.code != 200) {
      if (res.msg == "请重新登录") {
        // window.location.href = 'http://39.104.100.138:8082/'
      } else {
        Message({
          message: res.msg || 'Error',
          type: 'error',
          duration: 5 * 1000
        })
      }
      return Promise.reject(new Error(res.message || 'Error'))
    } else {
      return res
    }
  },
  error => {
    console.log('err' + error) // for debug
    Message({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service