{
 "video_dir": "video/",
 "base_host": "http://xxxxx"
 "request_prefix":'/api/'
}

import Vue from 'vue';
import axios from 'axios';

const protocolTmp = window.location.protocol; // 获取当前 URL 的协议
const { host } = window.location; // 获取当前host

<!--请求配置信息-->
async function getServerConfig() {
 return new Promise(async (resolve, reject) => {
  await axios.get(`${protocolTmp}//${host}/baseConfig.json`).then((result) => {
   const { base_host,video_dir ,request_prefix} = result.data;
   //把配置挂载在Vue属性上，以便调用
   Vue.prototype.$base_host = base_host;
   Vue.prototype.$request_prefix = request_prefix;
   Vue.prototype.$video_dir = video_dir;
   resolve();
  }).catch((error) => {
   console.log('error', error);
   reject();
  });
 });
}
getServerConfig();

plugins: [
  ...
  '~/plugins/pathConfig'
 ],

import Qs from "qs"
import Vue from 'vue';

export default function (e) {
 // e.$axios.defaults.baseURL = 'http://xxxxxxx/api/'
 // e.$axios.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded';
   e.$axios.defaults.baseURL = Vue.prototype.$base_host + Vue.prototype.$request_prefix
 
 // request interceptor
 e.$axios.interceptors.request.use(
  config => {
   // do something before request is sent
   if (config.method == 'post') {
    config.data = Qs.stringify(config.data)
   }
   return config
  },
  error => {
   // do something with request error
   return Promise.reject(error)
  }
 )
 // response interceptor
 e.$axios.interceptors.response.use(
  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
   const res = response.data
   if (response.status === 200 && res.code == 1000) {
    return res
   } else {
    // redirect('/404')
    // if the custom code is not 200, it is judged as an error.
   }
   return Promise.reject({ code: res.code, msg: res.msg || 'Error' })
  },
  error => {
   console.log('err' + error) // for debug

   return Promise.reject(error)
  }
 )

 e.$axios.onError(error => {
  const code = parseInt(error.response && error.response.status)
  if (code === 400) {
   // redirect('/400')
   console.log('$axios.onError :', error)
  }
 })
}