微信扫码支付asp.net(C#)实现步骤

来源：互联网发布：originlab mac 编辑：程序博客网时间：2024/05/01 05:55

支付提交页面：

        [HttpPost]        public ActionResult index(decimal amount)        {            //生成订单10位序列号，此处用时间和随机数生成，商户根据自己调整，保证唯一            string order_no = DateTime.Now.ToString("yyyyMMddHHmmss") + TenpayUtil.BuildRandomStr(4);            //这里是数据操作，代码已删除            ViewData["weixin_pay_qr_code"] = string.Format("/get_qrcode?product_id={0}", order_no);            return View();        }

输出二维码：

        public void get_qrcode(string product_id)        {            WxPayHelper helper = new WxPayHelper();            Dictionary<string, string> dic = new Dictionary<string, string>();            dic.Add("appid", config_util.mp_weixin_appid);            dic.Add("mch_id", config_util.weixin_mch_id);            dic.Add("nonce_str", TenpayUtil.getNoncestr());            dic.Add("product_id", product_id);            dic.Add("time_stamp", TenpayUtil.getTimestamp());            dic.Add("sign", helper.GetSign(dic));            string url = WxPayHelper.FormatBizQueryParaMap(dic, false);//这里不要url编码            string code = "weixin://wxpay/bizpayurl?" + url;            var qrc = Create_ImgCode(code, 6);            System.IO.MemoryStream ms = new System.IO.MemoryStream();            qrc.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);            byte[] bytes = ms.GetBuffer();  //byte[]   bytes=   ms.ToArray(); 这两句都可以，至于区别么，下面有解释            ms.Close();            Response.BinaryWrite(bytes);            return;        }

原生拉取微信支付代码：

        public ContentResult index()        {                        if (Request.RequestType == "POST")            {                try                {                    WxPayHelper helper = new WxPayHelper();                    StreamReader reader = new StreamReader(Request.InputStream);                    String xmlData = reader.ReadToEnd();                    helper.ReceivePostXmlData(xmlData);                    common_util.WriteLog("接收post来的xmlData=" + xmlData);                    if (helper.CheckSign())                    {                        common_util.WriteLog("签名验证通过");                        string product_id = helper.GetProductId();                        common_util.WriteLog("产品id=" + product_id);                        string order_no = product_id;if (产品ID存在)                        {                            #region 业务处理                            helper.SetParameter("body", "用户充值，用户号：" + item.user_id);                            helper.SetParameter("out_trade_no", order_no);                            helper.SetParameter("total_fee", (item.amount * 100).ToString("#"));//这里单位是分                            helper.SetParameter("notify_url", "http//www.openweixin.com.cn/notify");                            helper.SetParameter("trade_type", "NATIVE");                            string prepay_id = helper.GetPrepayId();                            common_util.WriteLog("prepay_id=" + prepay_id);                            if (!string.IsNullOrEmpty(prepay_id))                            {                                helper.SetReturnParameter("return_code", "SUCCESS");                                helper.SetReturnParameter("result_code", "SUCCESS");                                helper.SetReturnParameter("prepay_id", prepay_id);                                helper.SetReturnParameter("appid", helper.GetAppId);                                helper.SetReturnParameter("mch_id", helper.GetMch_Id);                                helper.SetReturnParameter("nonce_str", TenpayUtil.getNoncestr());                            }                            else                            {                                helper.SetReturnParameter("return_code", "SUCCESS");//返回状态码                                helper.SetReturnParameter("result_code", "FAIL");//业务结果                                helper.SetReturnParameter("err_code_des", "预订单生产失败");                            }                            #endregion                        }                        else                        {                            helper.SetReturnParameter("return_code", "SUCCESS");//返回状态码                            helper.SetReturnParameter("result_code", "FAIL");//业务结果                            helper.SetReturnParameter("err_code_des", "此商品无效");//业务结果                        }                    }                    else                    {                        helper.SetReturnParameter("return_code", "FAIL");                        helper.SetReturnParameter("return_msg", "签名失败");                        common_util.WriteLog("签名验证没有通过");                    }                    string xmlStr = helper.GetReturnXml();                    common_util.WriteLog("返回xml=" + xmlStr);                    Response.ContentType = "text/xml";                    Response.Clear();                    Response.Write(xmlStr);                    Response.End();                }                catch (Exception ex)                {                    common_util.WriteLog("异常了" + ex);                }            }            return Content("OK");        }

支付成功通知页面：

            if (Request.RequestType == "POST")            {                try                {                    WxPayHelper helper = new WxPayHelper();                    StreamReader reader = new StreamReader(Request.InputStream);                    String xmlData = reader.ReadToEnd();                    helper.ReceivePostXmlData(xmlData);                    common_util.WriteLog("Notify_接收post来的xmlData=" + xmlData);                    if (helper.CheckSign())                    {                        Dictionary<string, string> dicBack = helper.GetParameter();//获取所有参数                        if (dicBack != null && dicBack.Keys.Contains("return_code"))                        {                            if (dicBack["return_code"] == "SUCCESS")                            {                                common_util.WriteLog("return_code=SUCCESS");                                if (dicBack["result_code"] == "SUCCESS")                                {                                    common_util.WriteLog("result_code=SUCCESS");                                    string out_trade_no = dicBack["out_trade_no"];//商户订单号                                    common_util.WriteLog("out_trade_no=" + out_trade_no);                                    //1.验证商户订单号是否被处理                                    //2.处理过直接返回成功，否则返回                                    //此处根据out_trade_no 处理业务数据                                    //处理业务数据结束                                    common_util.WriteLog("Notify_验证签名成功");                                    helper.SetReturnParameter("return_code", "SUCCESS");                                    helper.SetReturnParameter("return_msg", "");                                }                            }                            if (dicBack["return_code"] == "FAIL")                            {                                common_util.WriteLog("Notify_验证签名成功");                                helper.SetReturnParameter("return_code", "SUCCESS");                                helper.SetReturnParameter("return_msg", dicBack["return_msg"]);                            }                        }                    }                    else                    {                        common_util.WriteLog("Notify_验证签名失败");                        helper.SetReturnParameter("return_code", "FAIL");                        helper.SetReturnParameter("return_msg", "签名失败");                    }                    string xmlStr = helper.GetReturnXml();                    common_util.WriteLog("Notify_返回xml=" + xmlStr);                    Response.ContentType = "text/xml";                    Response.Clear();                    Response.Write(xmlStr);                    Response.End();                }                catch (Exception ex)                {                    common_util.WriteLog("Notify_异常了" + ex);                }            }            return Content("OK");

以上代码全部经过实体网站测试成功运行。

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