chinapay扫码支付

/// <summary>        /// 提交订单获取支付二维码        /// </summary>        /// <param name="amount"></param>        /// <param name="order_no"></param>        /// <returns></returns>        public string GetChinaPay(decimal amount, string order_no)        {            string resultStr = "0";            Hashtable myMap = new Hashtable();            myMap.Add("MerId", " ");            myMap.Add("MerOrderNo", order_no);            myMap.Add("TranDate", DateTime.Now.ToString("yyyyMMdd"));            myMap.Add("TranTime", DateTime.Now.ToString("HHmmss"));            myMap.Add("OrderAmt", (amount * 100).ToString("0"));            myMap.Add("TranType", "0001");            myMap.Add("BusiType", "0001");            myMap.Add("AccessType", "0");            myMap.Add("MerPageUrl", frontUrl);            myMap.Add("MerBgUrl", backUrl);            myMap.Add("CurryNo", "CNY");            myMap.Add("CommodityMsg", "支付订单");            myMap.Add("PayTimeOut", "145");            myMap.Add("Version", "20140728");            myMap.Add("OrderReserved", "{\"OrderType\":\"0001\"}");            chinapaysecure.SecssUtil obj = new chinapaysecure.SecssUtil();            obj.init(chinaPayFile);            NetLog.WriteTextLog("log", chinaPayFile, DateTime.Now, "");            obj.sign(myMap);            String signature = obj.getSign();            if ("00" == obj.getErrCode())            {                myMap.Add("Signature", signature);                string parmas = "";                int i = 0;                foreach (DictionaryEntry de in myMap)                {                    if (i > 0)                    {                        parmas += "&";                    }                    parmas += de.Key + "=" + HttpUtility.UrlEncode(de.Value.ToString(), Encoding.UTF8);                    //parmas += de.Key + "=" + de.Value;                    i++;                }                string result = Post("http://www.chinapay.com/cofcoko/bgTransGet", parmas);                string code = ""; string PayReserved = "";                string[] results = result.Split('&');                for (int s = 0; s < results.Length; s++)                {                    if (results[s].Split('=')[0] == "respCode")                    {                        code = results[s].Split('=')[1];                    }                    else if (results[s].Split('=')[0] == "PayReserved")                    {                        PayReserved = results[s].Replace("PayReserved=", "");                    }                }                if (code == "0000")                {                    Dictionary<string, object> res = JsonHelper.DataRowFromJSON(PayReserved);                    foreach (var item in res)                    {                        if (item.Key == "QrCode")                        {                            resultStr = item.Value.ToString();                            break;                        }                    }                }            }            return resultStr;        }        /// <summary>        /// chinapay应答验签        /// </summary>        /// <param name="dataStr"></param>        /// <returns></returns>        public string CheckChinaPay(string dataStr)        {            string result = "";            try            {                if (!string.IsNullOrEmpty(dataStr))                {                    Hashtable myMap = new Hashtable();                    string order_no = "", amount = "";                    //dataStr = HttpUtility.UrlDecode(dataStr);                    string[] infos = dataStr.Split('&');                    for (int i = 0; i < infos.Length; i++)                    {                        string[] item = infos[i].Split('=');                        if (item.Length == 2 && item[0] == "MerOrderNo")                        {                            order_no = item[1];                        }                        else if (item.Length == 2 && item[0] == "OrderAmt")                        {                            amount = item[1];                        }                        myMap.Add(item[0], HttpUtility.UrlDecode(item[1], Encoding.UTF8));                    }                    SecssUtil obj = new SecssUtil();                    obj.init(chinaPayFile); //初始化安全控件：                    obj.verify(myMap);                    if (obj.getErrCode() != "00")                    {                        result = obj.getErrMsg();                    }                    else                    {                        result = order_no + "/" + amount;                    }                }            }            catch (Exception e)            {                result = e.Message.ToString();            }            return result;        }/// <summary>        /// HTTP POST方式请求数据        /// </summary>        /// <param name="url">URL.</param>        /// <param name="param">POST的数据</param>        /// <returns></returns>        public static string Post(string url, string param)        {            byte[] byteArray = Encoding.UTF8.GetBytes(param);            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);            request.Method = "POST";            request.ContentType = "application/x-www-form-urlencoded";            //request.ContentLength = byteArray.Length;            Stream requestStream = null;            WebResponse response = null;            string responseStr = null;            try            {                requestStream = request.GetRequestStream();                requestStream.Write(byteArray, 0, byteArray.Length);                requestStream.Close();                response = request.GetResponse();                if (response != null)                {                    StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);                    responseStr = reader.ReadToEnd();                    reader.Close();                }            }            catch (Exception)            {                throw;            }            finally            {                request = null;                requestStream = null;                response = null;            }            return responseStr;        }