nonceStr 
 package2
 paySign 
 signType
 timeStamp

wx.login({
   success: function (res) {
    var userId = wx.getStorageSync('userId');
    var passw = userId + orderId;
    console.log(passw)
    var password = util.sha1(passw);
    //console.log(res) //获取用户的code 微信返回的值 
    wx.request({
     url: url + 'wechat/pay/prepay',
     method: "POST",
     header: {
      'content-type': 'application/json',
     },
     data: {
      code: res.code, //微信返的code
      userId: userId, //登录注册时后端返给我的
      orderId: orderId, //用户提交时后端返给我的工单号
      sign: password, //后端要求的serId + orderId加密
     },
     success: function (res) {
      // if (res.data.resultCode == "000000"){
       nonceStr = res.data.data.nonceStr;
       package2 = res.data.data.package;
       paySign = res.data.data.paySign;
       signType = res.data.data.signType;
       timeStamp = res.data.data.timeStamp;
       that.pay2()
      // }
       console.log(res.data.data.nonceStr)
       console.log(res.data.data.package)
       console.log(res.data.data.paySign)
       console.log(res.data.data.signType)
       console.log(res.data.data.timeStamp)
     },
     fail(err) {
      console.log(err)
     }
    })
   },
   fail(errs) {
    console.log(errs)
   }
  })