小程序微信支付问题

这里说的支付是其程序方说明的JSAPI方式，即按支付按钮后，会出现输入支付密码的样式。

js中支付按钮函数（bindtap）可以是：

pay: function (options) {

    var orderCode = this.getorderid();//可以定义一个获取订单号的函数;

    var that=this;

    var selfsession = wx.getStorageSync("selfsession");//前述selfsession的使用方法.文章-小程序获取session方法

    wx.login({

      success: function (res) {

        if (res.code) {

          wx.request({

            url: "https://www.test.cn/test.ashx",

            data: {

              code: res.code,             

              order_code: orderCode,//相应参数在此规划好

              total_fee: "",

              body:"",           

            },           

            method: 'POST',          

            header: {'content-type': 'application/x-www-form-urlencoded'},           

                 success: function(res) {                           

                    console.log(res.data); 

                    wx.requestPayment({                                  

              timeStamp:res.data.timeStamp,                                                                      nonceStr:res.data.nonceStr,               

                      package:res.data.package,               

                      signType:res.data.signType,               

                      paySign:res.data.paySign,               

                      success: function(res) {                

                       console.log(res);                                     

                       wx.request({//更新付款状态及录入订单号、订单金额等。

                          url: "https://www.test.cn/test.ashx",

                          method: "POST",

                          header: { "Content-Type": "application/x-www-form-urlencoded" },

                          data: {

                          },

                          success: function (res) {

                          },

                          fail: function (res) {

                           }, 

                        })             

                       },               

                      fail: function(res) {                 

                       console.log("支付失败：",res);

                       },             

                    })           

                  }          

              })       

            }    

          }  

     }) 

  },

后方函数，需要一系列函数支撑，需要定义一个微信支付类WXPay。

后方在接到命令后，处理函数如下，s是需要返回给前方的字符串。

                {

                    try

                    {

                        string code = context.Request.Form["code"];

                        string order_code = context.Request.Form["order_code"];

                        string body = context.Request.Form["body"];

                        string total_fee = context.Request.Form["total_fee"];

                        WXPay.PayRequesEntity msg = (WXPay.PayRequesEntity)WXPay.Pay(code, order_code,total_fee,body);

                        if (msg != null)

                        {

                            s = "{\"state\":\"OK\",\"Error_code\":\"0\",\"Success\":\"" + true + "\",\"Message\":\"支付结果！\",\"Total_count\":\""+total_fee+"\",\"timeStamp\":\"" + msg.timeStamp + "\",\"nonceStr\":\"" + msg.nonceStr + "\",\"package\":\"" + msg.package + "\",\"signType\":\"" + msg.signType + "\",\"paySign\":\"" + msg.paySign + "\"}";

                        }

                        else

                        {

                            s = "{\"state\":\"none\"}";

                        }

                    }

                    catch (Exception e)

                    {

                        s = "{\"state\":\"none\",\"Error_code\":\"1\",\"Success\":\"" + false + "\",\"Message\":\"发起支付失败！\",\"Error_desc\":\"" + e.Message + "\"}";

                    }

                }