Asp.net 微信H5唤起支付和支付回调

 public class WxPayData     {         public WxPayData()         {          }          //采用排序的Dictionary的好处是方便对数据包进行签名，不用再签名之前再做一次排序         private SortedDictionary<string, object> m_values = new SortedDictionary<string, object>();          /**         * 设置某个字段的值         * @param key 字段名          * @param value 字段值         */         public void SetValue(string key, object value)         {             m_values[key] = value;         }          /**         * 根据字段名获取某个字段的值         * @param key 字段名          * @return key对应的字段值         */         public object GetValue(string key)         {             object o = null;             m_values.TryGetValue(key, out o);             return o;         }          /**          * 判断某个字段是否已设置          * @param key 字段名          * @return 若字段key已被设置，则返回true，否则返回false          */         public bool IsSet(string key)         {             object o = null;             m_values.TryGetValue(key, out o);             if (null != o)                 return true;             else                 return false;         }          /**         * @将Dictionary转成xml         * @return 经转换得到的xml串         * @throws WxPayException         **/         public string ToXml()         {             //数据为空时不能转化为xml格式             if (0 == m_values.Count)             {                 throw new WxPayException("WxPayData数据为空!");             }              string xml = "<xml>";             foreach (KeyValuePair<string, object> pair in m_values)             {                 //字段值不能为null，会影响后续流程                 if (pair.Value == null)                 {                     throw new WxPayException("WxPayData内部含有值为null的字段!");                 }                  if (pair.Value.GetType() == typeof(int))                 {                     xml += "<" + pair.Key + ">" + pair.Value + "</" + pair.Key + ">";                 }                 else if (pair.Value.GetType() == typeof(string))                 {                     xml += "<" + pair.Key + ">" + "<![CDATA[" + pair.Value + "]]></" + pair.Key + ">";                 }                 else//除了string和int类型不能含有其他数据类型                 {                     throw new WxPayException("WxPayData字段数据类型错误!");                 }             }             xml += "</xml>";             return xml;         }          /**         * @将xml转为WxPayData对象并返回对象内部的数据         * @param string 待转换的xml串         * @return 经转换得到的Dictionary         * @throws WxPayException         */         public SortedDictionary<string, object> FromXml(string xml)         {             if (string.IsNullOrEmpty(xml))             {                 throw new WxPayException("将空的xml串转换为WxPayData不合法!");             }              XmlDocument xmlDoc = new Xml.XmlDocument_XxeFixed();             xmlDoc.LoadXml(xml);             XmlNode xmlNode = xmlDoc.FirstChild;//获取到根节点<xml>             XmlNodeList nodes = xmlNode.ChildNodes;             foreach (XmlNode xn in nodes)             {                 XmlElement xe = (XmlElement)xn;                 m_values[xe.Name] = xe.InnerText;//获取xml的键值对到WxPayData内部的数据中             }              try             {                 //2015-06-29 错误是没有签名                 if (m_values["return_code"].ToString() != "SUCCESS")                 {                     return m_values;                 }                 CheckSign();//验证签名,不通过会抛异常             }             catch (WxPayException ex)             {                 throw new WxPayException(ex.Message);             }              return m_values;         }          /**         * @Dictionary格式转化成url参数格式         * @ return url格式串, 该串不包含sign字段值         */         public string ToUrl()         {             string buff = "";             foreach (KeyValuePair<string, object> pair in m_values)             {                 if (pair.Value == null)                 {                     throw new WxPayException("WxPayData内部含有值为null的字段!");                 }                  if (pair.Key != "sign" && pair.Value.ToString() != "")                 {                     buff += pair.Key + "=" + pair.Value + "&";                 }             }             buff = buff.Trim('&');             return buff;         }           /**         * @Dictionary格式化成Json          * @return json串数据         */         public string ToJson()         {           //  string jsonStr = JsonMapper.ToJson(m_values);             return "";         }          /**         * @values格式化成能在Web页面上显示的结果（因为web页面上不能直接输出xml格式的字符串）         */         public string ToPrintStr()         {             string str = "";             foreach (KeyValuePair<string, object> pair in m_values)             {                 if (pair.Value == null)                 {                     throw new WxPayException("WxPayData内部含有值为null的字段!");                 }                  str += string.Format("{0}={1}<br>", pair.Key, pair.Value.ToString());             }             return str;         }          /**         * @生成签名，详见签名生成算法         * @return 签名, sign字段不参加签名         */         public string MakeSign()         {             //转url格式             string str = ToUrl();             //在string后加入API KEY             str += "&key=" + WechatConfig.Key;             //MD5加密             var md5 = MD5.Create();             var bs = md5.ComputeHash(Encoding.UTF8.GetBytes(str));             var sb = new StringBuilder();             foreach (byte b in bs)             {                 sb.Append(b.ToString("x2"));             }             //所有字符转为大写             return sb.ToString().ToUpper();         }          /**         *          * 检测签名是否正确         * 正确返回true，错误抛异常         */         public bool CheckSign()         {             //如果没有设置签名，则跳过检测             if (!IsSet("sign"))             {                 throw new WxPayException("WxPayData签名存在但不合法!");             }             //如果设置了签名但是签名为空，则抛异常             else if (GetValue("sign") == null || GetValue("sign").ToString() == "")             {                 throw new WxPayException("WxPayData签名存在但不合法!");             }              //获取接收到的签名             string return_sign = GetValue("sign").ToString();              //在本地计算新的签名             string cal_sign = MakeSign();              if (cal_sign == return_sign)             {                 return true;             }              throw new WxPayException("WxPayData签名验证错误!");         }          /**         * @获取Dictionary         */         public SortedDictionary<string, object> GetValues()         {             return m_values;         }     }

 public class WxPayException : Exception     {         public WxPayException(string msg) : base(msg)         {         }     }

public class HttpService     {          public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)         {             return true;         }          public static string Post(string xml, string url, bool isUseCert, int timeout)         {             GC.Collect();//垃圾回收，回收没有正常关闭的http连接              string result = "";//返回结果              HttpWebRequest request = null;             HttpWebResponse response = null;             Stream reqStream = null;              try             {                 //设置最大连接数                 ServicePointManager.DefaultConnectionLimit = 200;                 //设置https验证方式                 if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))                 {                     ServicePointManager.ServerCertificateValidationCallback =                             new RemoteCertificateValidationCallback(CheckValidationResult);                 }                  /***************************************************************                 * 下面设置HttpWebRequest的相关属性                 * ************************************************************/                 request = (HttpWebRequest)WebRequest.Create(url);                  request.Method = "POST";                 request.Timeout = timeout * 1000;                  //设置代理服务器                 //WebProxy proxy = new WebProxy();                          //定义一个网关对象                 //proxy.Address = new Uri(WxPayConfig.PROXY_URL);              //网关服务器端口:端口                 //request.Proxy = proxy;                  //设置POST的数据类型和长度                 request.ContentType = "text/xml";                 byte[] data = Encoding.UTF8.GetBytes(xml);                 request.ContentLength = data.Length;                  ////是否使用证书                 //if (isUseCert)                 //{                 //    string path = HttpContext.Current.Request.PhysicalApplicationPath;                 //    X509Certificate2 cert = new X509Certificate2(path + WxPayConfig.SSLCERT_PATH, WxPayConfig.SSLCERT_PASSWORD);                 //    request.ClientCertificates.Add(cert);                 //}                  //往服务器写入数据                 reqStream = request.GetRequestStream();                 reqStream.Write(data, 0, data.Length);                 reqStream.Close();                  //获取服务端返回                 response = (HttpWebResponse)request.GetResponse();                  //获取服务端返回数据                 StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);                 result = sr.ReadToEnd().Trim();                 sr.Close();             }             catch (System.Threading.ThreadAbortException e)             {                 System.Threading.Thread.ResetAbort();             }             catch (WebException e)             {                 throw new WxPayException(e.ToString());             }             catch (Exception e)             {                 throw new WxPayException(e.ToString());             }             finally             {                 //关闭连接和流                 if (response != null)                 {                     response.Close();                 }                 if (request != null)                 {                     request.Abort();                 }             }             return result;         }     }

sealed class WechatConfig     {         #region 字段         static string appid = string.Empty;         static string mchid = string.Empty;         static string key = string.Empty;         static string appsecret = string.Empty;         static string notify_url = string.Empty;         static string gateway = string.Empty;         static string queryorder = string.Empty;         #endregion          static WechatConfig()         {             XmlDocument xml = new Xml.XmlDocument_XxeFixed();             xml.XmlResolver = null;             xml.Load(HttpContext.Current.Server.MapPath("/App_Data/xml/payment.xml"));             var root = xml.SelectSingleNode("paymentMethod").ChildNodes;             foreach (XmlNode xn in root)             {                 XmlElement xe = (XmlElement)xn;                 if (xe.GetAttribute("id") == "wechatpay")                 {                     appid = xe.GetAttribute("appid");                     mchid = xe.GetAttribute("mchid");                     key = xe.GetAttribute("key");                     appsecret = xe.GetAttribute("appsecret");                     notify_url = xe.GetAttribute("notify_url");                     gateway = xe.GetAttribute("gateway");                     queryorder = xe.GetAttribute("queryorder");                     break;                 }             }         }          internal static string Gateway         {             get             {                 return gateway;             }         }         internal static string Appid         {             get             {                 return appid;             }         }         internal static string Mchid         {             get             {                 return mchid;             }         }         internal static string Appsecret         {             get             {                 return appsecret;             }         }         internal static string Key         {             get             {                 return key;             }         }         internal static string Queryorder         {             get             {                 return queryorder;             }         }         internal static string Notify_url         {             get             {                 return notify_url;             }         }     }

 public sealed class WechatHelper     {         #region JSAPI Pay          /// <summary>         /// JSAPI Pay         /// </summary>         /// <param name="out_trade_no">订单编号</param>         /// <param name="total_fee">价格</param>         /// <param name="attach">自定义参数，回调回传</param>         /// <returns></returns>         public static ResultModel JSApiPay(string out_trade_no, decimal total_fee, string openid, string ip, string attach = "", string body = "购买商品")         {             WxPayData result = Pay(out_trade_no, total_fee, attach, body, ip, "JSAPI", openid);             string return_code = result.GetValue("return_code").ToString();//返回状态码  SUCCESS/FAIL              string result_code = result.GetValue("result_code").ToString();//返回状态码  SUCCESS/FAIL              if (return_code == "SUCCESS" && result_code == "SUCCESS")             {               //  string url = result.GetValue("prepay_id").ToString();//预付款订单prepay_id                 ResultModel rm = new ResultModel();                 rm.appId = WechatConfig.Appid;                 rm.timeStamp = WxPayApi.GenerateTimeStamp();                 rm.nonceStr = result.GetValue("nonce_str").ToString();                 rm.package = "prepay_id=" + result.GetValue("prepay_id").ToString();                 //设置支付参数                 var paySignReqHandler = new RequestHandler(null);                 paySignReqHandler.SetParameter("appId", rm.appId);                 paySignReqHandler.SetParameter("timeStamp", rm.timeStamp);                 paySignReqHandler.SetParameter("nonceStr", rm.nonceStr);                 paySignReqHandler.SetParameter("package", rm.package);                 paySignReqHandler.SetParameter("signType", "MD5");                 var paySign = paySignReqHandler.CreateMd5Sign("key", WechatConfig.Key);                 rm.paySign = paySign;                 return rm;             }             return null;         }          #endregion          public static WxPayData Pay(string out_trade_no, decimal total_fee, string attach, string body, string ip, string trade_type, string openId = "")         {             var paymoney = Convert.ToInt32(total_fee * 100);             WxPayData data = new WxPayData();             data.SetValue("body", body);//商品描述             data.SetValue("attach", attach);//附加数据,回调返回             data.SetValue("out_trade_no", out_trade_no);//订单编号             data.SetValue("total_fee", paymoney.ToString());//总金额             data.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));//交易起始时间             data.SetValue("time_expire", DateTime.Now.AddMinutes(10).ToString("yyyyMMddHHmmss"));//交易结束时间             data.SetValue("goods_tag", "");//商品标记，订单优惠标记，使用代金券或立减优惠功能时需要的参数             data.SetValue("trade_type", trade_type);//交易类型             if (trade_type == "JSAPI")             {                 data.SetValue("openid", openId);//openId             }             data.SetValue("product_id", out_trade_no);//商品ID             return WxPayApi.UnifiedOrder(data, ip);//调用统一下单接口         }         public static WxPayData GetNotifyData(Stream InputStream)         {             //接收从微信后台POST过来的数据             Stream s = InputStream;             int count = 0;             byte[] buffer = new byte[1024];             StringBuilder builder = new StringBuilder();             while ((count = s.Read(buffer, 0, 1024)) > 0)             {                 builder.Append(Encoding.UTF8.GetString(buffer, 0, count));             }             s.Flush();             s.Close();             s.Dispose();             //转换数据格式并验证签名             WxPayData data = new WxPayData();             try             {                 data.FromXml(builder.ToString());             }             catch (WxPayException ex)             {                 //若签名错误，则立即返回结果给微信支付后台                 WxPayData res = new WxPayData();                 res.SetValue("return_code", "FAIL");                 res.SetValue("return_msg", ex.Message);             }             return data;         }          //查询订单         public static bool QueryOrder(string transaction_id)         {             WxPayData req = new WxPayData();             req.SetValue("transaction_id", transaction_id);             WxPayData res = WxPayApi.OrderQuery(req);             if (res.GetValue("return_code").ToString() == "SUCCESS" &&                 res.GetValue("result_code").ToString() == "SUCCESS")             {                 return true;             }             else             {                 return false;             }         }      }     public class ResultModel     {         public string appId { get; set; }         public string timeStamp { get; set; }         public string nonceStr { get; set; }         public string package { get; set; }         public string paySign { get; set; }     }

public class WxPayApi     {          /**         *          * 统一下单         * @param WxPaydata inputObj 提交给统一下单API的参数         * @param int timeOut 超时时间         * @throws WxPayException         * @return 成功时返回，其他抛异常         */         public static WxPayData UnifiedOrder(WxPayData inputObj,string ip, int timeOut = 6)         {             //检测必填参数             if (!inputObj.IsSet("out_trade_no"))             {                 throw new WxPayException("缺少统一支付接口必填参数out_trade_no！");             }             else if (!inputObj.IsSet("body"))             {                 throw new WxPayException("缺少统一支付接口必填参数body！");             }             else if (!inputObj.IsSet("total_fee"))             {                 throw new WxPayException("缺少统一支付接口必填参数total_fee！");             }             else if (!inputObj.IsSet("trade_type"))             {                 throw new WxPayException("缺少统一支付接口必填参数trade_type！");             }             //关联参数             if (inputObj.GetValue("trade_type").ToString() == "JSAPI" && !inputObj.IsSet("openid"))             {                 throw new WxPayException("统一支付接口中，缺少必填参数openid！trade_type为JSAPI时，openid为必填参数！");             }             if (inputObj.GetValue("trade_type").ToString() == "NATIVE" && !inputObj.IsSet("product_id"))             {                 throw new WxPayException("统一支付接口中，缺少必填参数product_id！trade_type为JSAPI时，product_id为必填参数！");             }             inputObj.SetValue("notify_url", WechatConfig.Notify_url);//异步通知url             inputObj.SetValue("appid", WechatConfig.Appid);//公众账号ID             inputObj.SetValue("mch_id", WechatConfig.Mchid);//商户号             inputObj.SetValue("spbill_create_ip", ip);//终端ip                           inputObj.SetValue("nonce_str", GenerateNonceStr());//随机字符串             //签名             inputObj.SetValue("sign", inputObj.MakeSign());             string xml = inputObj.ToXml();             string response = HttpService.Post(xml, WechatConfig.Gateway, false, timeOut);             WxPayData result = new WxPayData();             result.FromXml(response);              //ReportCostTime(url, timeCost, result);//测速上报              return result;         }          /**         * 生成时间戳，标准北京时间，时区为东八区，自1970年1月1日 0点0分0秒以来的秒数          * @return 时间戳         */         public static string GenerateTimeStamp()         {             TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);             return Convert.ToInt64(ts.TotalSeconds).ToString();         }          /**         * 生成随机串，随机串包含字母或数字         * @return 随机串         */         public static string GenerateNonceStr()         {             return Guid.NewGuid().ToString().Replace("-", "");         }          /**         *             * 查询订单         * @param WxPayData inputObj 提交给查询订单API的参数         * @param int timeOut 超时时间         * @throws WxPayException         * @return 成功时返回订单查询结果，其他抛异常         */         public static WxPayData OrderQuery(WxPayData inputObj, int timeOut = 6)         {             string url = "https://api.mch.weixin.qq.com/pay/orderquery";             inputObj.SetValue("appid", WechatConfig.Appid);//公众账号ID             inputObj.SetValue("mch_id", WechatConfig.Mchid);//商户号             inputObj.SetValue("nonce_str",GenerateNonceStr());//随机字符串             inputObj.SetValue("sign", inputObj.MakeSign());//签名              string xml = inputObj.ToXml();              var start = DateTime.Now;              string response = HttpService.Post(xml, url, false, timeOut);//调用HTTP通信接口提交数据             var end = DateTime.Now;             int timeCost = (int)((end - start).TotalMilliseconds);//获得接口耗时              //将xml格式的数据转化为对象以返回             WxPayData result = new WxPayData();             result.FromXml(response);              // ReportCostTime(url, timeCost, result);//测速上报              return result;         }          /***     * 订单查询完整业务流程逻辑     * @param transaction_id 微信订单号（优先使用）     * @param out_trade_no 商户订单号     * @return 订单查询结果（xml格式）     */         public static WxPayData Run(string transaction_id, string out_trade_no)         {              WxPayData data = new WxPayData();             if (!string.IsNullOrEmpty(transaction_id))//如果微信订单号存在，则以微信订单号为准             {                 data.SetValue("transaction_id", transaction_id);             }             else//微信订单号不存在，才根据商户订单号去查单             {                 data.SetValue("out_trade_no", out_trade_no);             }              WxPayData result = OrderQuery(data);//提交订单查询请求给API，接收返回数据             return result;         }       }

<?xml version="1.0" encoding="utf-8" ?> <paymentMethod>   <info   id="wechatpay"   appid=""   mchid=""   key=""   appsecret=""   ip=""   notify_url="http://xxx/pay/WechatNotify"   gateway="https://api.mch.weixin.qq.com/pay/unifiedorder"   queryorder="https://api.mch.weixin.qq.com/pay/orderquery" /> </paymentMethod>

public ActionResult PayView(){ 　　　　　　　　　　　　WechatHelper wechatPay = new WechatHelper();                     var pay = wechatPay.JSApiPay(OrderNum, Price, WxOpenId, "ip", "5");                     var jssdkUiPackage = JSSDKHelper.GetJsSdkUiPackage(APPID, SECRET), Request.Url.AbsoluteUri);                     ViewBag.JssdkUiPackage = jssdkUiPackage;                     ViewBag.uid = user.Id;                     ViewBag.orderNum = order.OrderNum;                     JsSdkUiPackage jup = jssdkUiPackage as JsSdkUiPackage;                     return View(pay); }

@{     var jssdk = ViewBag.JssdkUiPackage as Senparc.Weixin.MP.Helpers.JsSdkUiPackage;     var uid = ViewBag.uid;     var ordernum = ViewBag.orderNum; }  <!DOCTYPE html> <html> <head>     <meta name="viewport" content="width=device-width" />     <title>微信支付</title> </head> <body>     <input type="hidden" id="appid" value="@Model.appId" />     <input type="hidden" id="timestamp" value="@Model.timeStamp" />     <input type="hidden" id="nonceStr" value="@Model.nonceStr" />     <input type="hidden" id="signature" value="@Model.paySign" />     <input type="hidden" id="wxpackage" value="@Model.package" />     <input type="hidden" id="uid" value="@uid" />      <input type="hidden" id="_timestamp" value="@jssdk.Timestamp" />     <input type="hidden" id="_nonceStr" value="@jssdk.NonceStr" />     <input type="hidden" id="_signature" value="@jssdk.Signature" />     <input type="hidden" id="ordernum" value="@ordernum" />     <input type="hidden" id="types" value="1" />      <script src="~/scripts/plug/jquery-1.9.1.min.js"></script>     <script src="~/scripts/plug/jweixin-1.2.0.js"></script>     <script src="~/scripts/plug/wechatpay.js"></script> </body> </html>

var appid = $("#appid").val(); var timestamp = $("#timestamp").val(); var nonceStr = $("#nonceStr").val(); var signature = $("#signature").val(); var wxpackage = $("#wxpackage").val(); var uid = $("#uid").val(); var _timestamp = $("#_timestamp").val(); var _nonceStr = $("#_nonceStr").val(); var _signature = $("#_signature").val();  var types = $("#types").val();  wx.config({     debug: false,     appId: appid, // 公众号的唯一标识     timestamp: _timestamp, //生成签名的时间戳     nonceStr: _nonceStr, // 生成签名的随机串     signature: _signature,// 签名     jsApiList: ['chooseWXPay', 'translateVoice'] });  wx.ready(function () {     wx.chooseWXPay({         timestamp: timestamp,         nonceStr: nonceStr,         package: wxpackage,         signType: 'MD5',         paySign: signature,         success: function (res) {             if (res.errMsg == "chooseWXPay:ok") {                 window.location.href = "/pay/Pay_Success";             } else {                 window.location.href = "/pay/Pay_Error";             }         },         fail: function (res) {             window.location.href = "/pay/Pay_Error";         },         cancel: function (res) {             window.location.href = "/pay/Pay_Error";         }     }); });

 #region 微信支付异步回调          [HttpPost]         [Transaction]         public ActionResult WechatNotify()         {             try             {                 WechatHelper wechatPay = new WechatHelper();                 WxPayData notifyData = wechatPay.GetNotifyData(Request.InputStream);                 string attach = notifyData.GetValue("attach").ToString();string transaction_id = notifyData.GetValue("transaction_id").ToString();                 if (!notifyData.IsSet("transaction_id"))                 {                     log("回调return_msg=支付结果中微信订单号不存在", "wechatpayer");                 }                 if (!wechatPay.QueryOrder(transaction_id))                 {                     log("回调return_msg=订单查询失败", "wechatpayer");                 }                 else                 {                     log("回调return_msg=OK", "wechatpayer");                 }                 var payxml = XDocument.Parse(notifyData.ToXml());                 if (payxml.Element("xml").Element("return_code").Value == "SUCCESS")                 {                     if (payxml.Element("xml").Element("result_code").Value == "SUCCESS")                     {                         string out_trade_no = payxml.Element("xml").Element("out_trade_no").Value;                     }                     return Content("<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[交易失败]]></return_msg></xml>");                 }                 return Content("<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[交易失败]]></return_msg></xml>");             }             catch (Exception ex)             {                 log(ex.ToString(), "wechatpayer");                 return Content("<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[交易失败]]></return_msg></xml>");             }         }           #endregion