详解vue axios二次封装

import axios from 'axios'
import qs from 'qs'
 
axios.interceptors.request.use(config => {
  //显示loading
 return config
}, error => {
 return Promise.reject(error)
})
 
 
axios.interceptors.response.use(response => {
 return response
}, error => {
 return Promise.resolve(error.response)
})
 
function errorState(response) {
  //隐藏loading
 console.log(response)
 // 如果http状态码正常，则直接返回数据
 if (response && (response.status === 200 || response.status === 304 || response.status === 400)) {
  return response
   // 如果不需要除了data之外的数据，可以直接 return response.data
 }else{
  Vue.prototype.$msg.alert.show({
      title: '提示',
      content: '网络异常'
  })
 }
 
}
 
function successState(res) {
  //隐藏loading
 //统一判断后端返回的错误码
 if(res.data.errCode == '000002'){
    Vue.prototype.$msg.alert.show({
      title: '提示',
      content: res.data.errDesc||'网络异常',
      onShow () {
      },
      onHide () {
       console.log('确定')
      }
    })
 }else if(res.data.errCode != '000002'&&res.data.errCode != '000000') {
   Vue.prototype.$msg.alert.show({
      title: '提示',
      content: res.data.errDesc||'网络异常',
      onShow () {
 
      },
      onHide () {
       console.log('确定')
      }
    })
 }
}
const httpServer = (opts, data) => {
 
  let Public = { //公共参数
   'srAppid': ""
  }
 
  let httpDefaultOpts = { //http默认配置
     method:opts.method,
     baseURL,
     url: opts.url,
     timeout: 10000,
     params:Object.assign(Public, data),
     data:qs.stringify(Object.assign(Public, data)),
     headers: opts.method=='get'?{
      'X-Requested-With': 'XMLHttpRequest',
      "Accept": "application/json",
      "Content-Type": "application/json; charset=UTF-8"
     }:{
      'X-Requested-With': 'XMLHttpRequest',
      'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
     }
  }
 
  if(opts.method=='get'){
   delete httpDefaultOpts.data
  }else{
   delete httpDefaultOpts.params
  }
  
  let promise = new Promise(function(resolve, reject) {
   axios(httpDefaultOpts).then(
    (res) => {
     successState(res)
     resolve(res)
    }
   ).catch(
    (response) => {
     errorState(response)
     reject(response)
    }
   )
 
  })
 return promise
}
 
export default httpServer

const serviceModule = {
 getLocation: {
  url: ' service/location/transfor',
  method: 'get'
 }
}
const ApiSetting = {...serviceModule }
 
export default ApiSetting

<script>
import http from "../../lib/http.js";
import ApiSetting from "../../lib/ApiSetting.js";
export default {
 created: function() {
  http(ApiSetting.getLocation,{"srChannel": "h5",})
  .then((res)=>{
   console.log(res)
  },(error)=>{
   console.log(error)	
  })
  },
 methods: {
 
 }
}
</script>