my_loan/htmldev/accessmanage/src/api/index.js

import Vue from 'vue'
import axios from 'axios'
import { Message } from 'element-ui'
import store from '../store/index'
import { getToken } from '@/utils/auth'

// axios.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded;charset=UTF-8'
axios.defaults.baseURL = (process.env.VUE_APP_ISPROXY * 1 ? '' : '') + '/api'
axios.defaults.timeout = 20000

axios.interceptors.request.use(config => {
    if (getToken()) {
      config.headers['token'] = getToken()
    }
    if (config.method === 'post') {
      config.params = undefined
    }
    return config
  }, error => Promise.resolve(error.response || error)
)

axios.interceptors.response.use(response => {
    if (response.data && response.data.code !== 200 && response.data.msg) {
      Message.error(response.data.msg)
    }
    if (response.data && response.data.code === 403) {
      store.dispatch('user/logout')
      setTimeout(() => {
        location.href = '/login'
      }, 200)

    }
    return response
  }, error => {
    if (error.response && error.response.data.msg) {
      Message.error(error.response.data.msg)
    } else if (error.message) {
      if (error.code && error.code === 'ECONNABORTED') {
        Message.error('连接超时')
      } else {
        Message.error(error.message)
      }
    }
    return Promise.resolve(error.response || error)
  }
)

export const fetch = (url, data = {}, method = 'post') => {
  return new Promise((resolve, reject) => {
    axios({
      url,
      data: method === 'post' ? data : {},
      params: method === 'post' ? {} : data,
      method
    }).then(res => resolve(res.data))
  })
}

Vue.prototype.$fetch = fetch