vue2 + axios http请求封装

import Qs from 'qs'
import axios from "axios"
axios.defaults.timeout = 15000;
axios.defaults.transformResponse = [function (data) {
  data = JSON.parse(data)
  return data
}]
axios.interceptors.request.use(function(config) {
  console.log("请求开始")
  return config;
}, function (error) {
  return Promise.reject(error);
});
axios.interceptors.response.use((res) => {
  console.log("请求结束 ")
  return res;
}, (error) => {
  return Promise.reject(error);
});
function http(type,url, params,contentType) {
  let contType = contentType=='json' ? 'application/json':'application/x-www-form-urlencoded'
  let paramstranform = contentType == 'json' ? params : Qs.stringify(params)
  if(type == "get"){
    return new Promise((resolve, reject) => {
      // alert("axios-token:::"+localStorage.token)
      axios({
        method:'get',
        url:url,
        headers: {'token' : localStorage.token},
        params:params
      })
      // axios.get(url, { params: params },{headers : {'token' : localStorage.token}})
      .then((res) => {
        resolve(res.data)
      }).catch(err => {
        if (err == "Error: timeout of 15000ms exceeded") {
          console.log("服务器请求超时")
          return
        }
        alert(err)
      })
    })
  }else{
    return new Promise((resolve,reject)=>{
       axios({
        method:'post',
        url:url,
        headers: {'Content-Type': contType},
        data:paramstranform
      })
      // axios.post(url,paramstranform,{headers:{'Content-Type': contType,'token' : localStorage.token}})
      .then((res)=>{
        resolve(res.data)
      }).catch(err=>{
        if(err == "Error: timeout of 15000ms exceeded"){
          alert("服务器请求超时,请刷新页面重新进入")
        }
        alert(err)
      })
    })
  }
}
export default http

import httpRequest from '@/config/http'  具体的地址还有文件名自己改写
Vue.prototype.$http = httpRequest //定义一个全局变量

getList(){
        this.$http('post',this.baseUrl+'/tag/theme/list').then((res) => {
           console.log(res)
        });
}