http=>require.js封装

1. require.js

/**
 * 网络请求公共方法:
 *      1.基本的请求
 *      2.为了后续,promise处理 :fetch 
 *      3.对数据的状态处理  lodding toast
 *      4.请求头处理 !!!机型 大小 系统 屏幕
 */
const store = require('../utils/store.js');
const Animation=require('../utils/animation.js')
const system = store.getSystemInfo();
const clientInfo = {
  "clientType": "mp",
  "appnm": "facility-access-miniprogram",
  "model": system.model,
  "os": system.system,
  "screen": system.screenWidth + "*" + system.screenHeight,
  "version": App.version
}

const successFun = (reslove, data) => {
  let obj = data
  reslove(obj)
};
const errFun = (reslove, data) => {
  if(data.statusCode==401){
    loginOut();
    return
  }
  let obj={
    statusCode:data.statusCode,
    errMsg:data.data['message']||data.data['msg']||'网络请求失败,请重新尝试!'
  }
  Animation.hideToast()
  Animation.myToast('cancel',obj.errMsg);
  reslove(obj)
}
module.exports = {
  fetch: (url, data = {}, option = {},needToken=true) => {
    let {
      lodding = true, toast = true, method = 'get'
    } = option;

    return new Promise((reslove, reject) => {
      if (lodding) {
        wx.showLoading({
          title: '加载中...',
          mask: true
        })
      }

      let env = App.config.baseApi;
      let userInfo=store.getItem('userInfo')
      let header={
        "Content-Type": "application/json",
        "clientInfo": JSON.stringify(clientInfo),
      }
      if(needToken){
        header['Authorization']=store.getItem('token')['access_token']||null;
        header['RefreshToken']=store.getItem('token')['refresh_token']||null;
      }
      if (method == 'delete' || method == 'DELETE'){    
        if (data){
          let arr = [];
          for (let key in data){
            let value = data[key];
            if (value === null || value === undefined || value == 'null') {
              value = ''
            };
            if (Array.isArray(value)){
              value = data[key].toString();
            }
            arr.push(`${key}=${value}`);
          }           
          url += "?" + arr.join('&');
          data = '';
        }
      }
      wx.request({
        url: env + url,
        data,
        method,
        header,
        success(res) {
          if (res.statusCode == 200) { //请求成功
            if (lodding) {
              wx.hideLoading({
               fail:()=>{
               }
              });
            }
            successFun(reslove, res.data)
          } else { //请求失败
            if (toast) {
              wx.hideLoading({
                fail:()=>{
                }
              });
              //Animation.myToast('forbidden','请求超时');
            } else {
              if (lodding) {
                wx.hideLoading({
                  fail:()=>{
                  }
                });
              }
            }
            errFun(reject, res)
          }
        },
        fail: (err => {
          let obj={
            statusCode:-1,
            data:{
              message:err.errMsg
            }
          }
          errFun(reject, obj)
        })
      })
    })
  }
};
const loginOut=function(){
  store.clear("token");
  store.clear("userInfo");
}