var CryptoJS = require("crypto-js");
var Base64 = require("js-base64");

//解析加密数据
function decode(sesionKey,iv,data) {
  var key = CryptoJS.enc.Base64.parse(sesionKey);
  var iv = CryptoJS.enc.Base64.parse(iv);
  var decrypt = CryptoJS.AES.decrypt(data, key, {
    iv: iv,
    mode: CryptoJS.mode.CBC,
    padding: CryptoJS.pad.Pkcs7
  });
  return Base64.decode(CryptoJS.enc.Base64.stringify(decrypt));
}

module.exports = {
 decode
}

// pages/getphonenumber/getphonenumber.js
const WXBizDataCrypt = require(\'../../utils/WXBizDataCrypt\');

Page({

  /**
   * 页面的初始数据
   */
  data: {
    phoneNum:\'\',
    sessionKey:\'\',
    openId:\'\',
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    this.getSessionKey();
  },

  getPhoneNumber: function(e){
    if (e.detail.errMsg == "getPhoneNumber:fail user deny") {
      wx.showToast({
        title: \'拒绝授权，无法获取用户手机号码！\',
      }) 
      return;
    }
    //解密数据获取手机号码
    this.decryptData(this.data.sessionKey,e.detail.iv,e.detail.encryptedData);
  },

  //获取SessionKey
  getSessionKey: function(){
    wx.login({
      success:res =>{
        console.log(\'code:\'+res.code);
        var data = {
          \'appid\':\'***********\',//注意appId、secret需要替换为自身小程序的
          \'secret\':\'**************************\',
          \'js_code\':res.code,
          \'grant_type\':\'authorization_code\'
        };

        wx.request({
          url:\'https://api.weixin.qq.com/sns/jscode2session\',
          data:data,
          method:\'GET\',
          success:res =>{
            console.log("jscode2session result: ",res);
            this.setData({
              sessionKey:res.data.session_key,
              openId: res.data.openId
            })
          },
          fail:function(res){
            console.log("获取jscodeSession fail: ",res);
          }
        })
      }
    })
  },

  //解密数据
  decryptData: function(key,iv,encryptedData){
    var processData = WXBizDataCrypt.decode(key,iv,encryptedData);
    console.log("解密数据： ",processData);
    var jsonObj = JSON.parse(processData);
    this.setData({
      phoneNum: jsonObj[\'phoneNumber\']
    })
  },
})

<!--pages/getphonenumber/getphonenumber.wxml-->
<button type="primary"  bindgetphonenumber="getPhoneNumber" open-type=\'getPhoneNumber\'>获取手机号码</button>
<text>获取到的手机号码:{{phoneNum}}</text>