微信小程序封装request请求

App({
  // post请求封装
  post: function(url, data) {
    var promise = new Promise((resolve, reject) => {
      var that = this
      var postData = data
      wx.request({
        url: url,
        data: postData,
        method: 'POST',
        header: { 'content-type': 'application/x-www-form-urlencoded' },
        success: function(res) {
          //服务器返回数据
          if (res.data.ret === 'OK') {//根据数据返回格式来判断
            resolve(res)//根据数据格式需求返回
          } else {
            //返回错误提示信息
            reject(res.data.msg)
          }
        },
        fail: function(e) {
          reject('网络出错')
        }
      })
    })
    return promise
  },
  //get请求
  get:function(url,data){
    var promise = new Promise((reslove,reject)=>{
      var that = this
      var getData = data 
      wx.request({
        url:url,
        data:getData,
        method:'GET',
        header:{'content-type': 'application/x-www-form-urlencoded' },
        sucess:function(res){
          if (res.data.ret ==='OK') {
            reslove(res)
          } else {
            reject(res.data.msg)
          }
        },
        fail:{
          function(e){
            reject('网络出错')
          }
        }
      })
    }) 
    return promise
  }
})

const app = getApp();
Page({
  onLoad:function(){
      //post请求
      app.post(api,data)
      .then(res => {
        console.log(res) //正确返回结果
        wx.hideLoading()
      })
      .catch(errMsg => {
        console.log(123) //错误提示信息
        wx.hideLoading()
      })
}
})