微信小程序如何完成取得微信运动步数的案例（图）

现在运动计步很火，无论是蚂蚁森林，还是微信上都很火爆，本文介绍了微信小程序微信运动步数的实例代码，分享给大家

微信小程序API-微信运动

思路：wx.login获取的code请求获取的session_key，wx.getWeRunData获取的iv,encryptData，将它们一起发送到后台解密就行了。

安全顾虑，因为只是示例所以直接传递session_key了，为了安全最好按照下图的方式加密后存储到Redis中再传递key。

小程序端代码

get3rdSession: function () {
  let that = this
  wx.request({
   url: 'https://localhost/login.php',
   data: {
    code: this.data.code
   },
   method: 'GET', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT
   success: function (res) {
    var sessionId = res.data;
    that.setData({ sessionId: sessionId })
    wx.setStorageSync('sessionId', sessionId)
    that.decodeUserInfo()
   }
  })
 },
 decodeUserInfo: function () {
  let that = this
  wx.request({
   url: 'https://localhost/decrypt.php',
   data: {
    encryptedData: that.data.encryptedData,
    iv: that.data.iv,
    session: wx.getStorageSync('sessionId')
   },
   method: 'GET', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT
   // header: {}, // 设置请求的 header
   success: function (res) {
    let todayStep = res.data.stepInfoList.pop()
    that.setData({
     step: todayStep.step
    });
   }
  })
 },
 onLoad: function () {
  let that = this
  wx.login({
   success: function (res) {
    let code = res.code
    that.setData({ code: code })
    wx.getWeRunData({//解密微信运动
     success(res) {
      const wRunEncryptedData = res.encryptedData
      that.setData({ encryptedData: wRunEncryptedData })
      that.setData({ iv: res.iv })
      that.get3rdSession()//解密请求函数
     }
    })
   }
  })
 }