紅包功能簡單介紹:
1、商戶呼叫介面時,通過指定傳送物件以及傳送金額的方式發放紅包,這樣的方式,允許商戶靈活的應用於各種各樣豐富的活動場景
2、領取到紅包後,使用者的資金直接進入微信零錢,避免繁複的領獎流程,帶給使用者微信支付原生的流暢體驗
現金紅包官網文件地址:https://pay.weixin.qq.com/wiki/doc/api/tools/cash_coupon.php?chapter=13_1
呼叫現金紅包介面需要使用到證書,請前往商戶平臺下載證書
官網有關詳細證書的介紹:https://pay.weixin.qq.com/wiki/doc/api/tools/cash_coupon.php?chapter=4_3
因為傳送現金紅包是從商戶平臺餘額扣款,所以商戶平臺的賬戶餘額必須有充足的餘額
下面是呼叫紅包介面詳細程式碼:1、簽名的MD5加密類:
/// <summary> /// MD5UtilHelper 的摘要說明。 /// </summary> public class MD5UtilHelper { public MD5UtilHelper() { // // TODO: 在此處新增建構函式邏輯 // } /// <summary> /// 獲取大寫的MD5簽名結果 /// </summary> /// <param name="encypStr"></param> /// <param name="charset"></param> /// <returns></returns> public static string GetMD5(string encypStr, string charset) { string retStr; MD5CryptoServiceProvider m5 = new MD5CryptoServiceProvider(); //建立md5物件 byte[] inputBye; byte[] outputBye; //使用GB2312編碼方式把字串轉化為位元組陣列. try { inputBye = Encoding.GetEncoding(charset).GetBytes(encypStr); } catch (Exception ex) { inputBye = Encoding.GetEncoding("GB2312").GetBytes(encypStr); } outputBye = m5.ComputeHash(inputBye); retStr = System.BitConverter.ToString(outputBye); retStr = retStr.Replace("-", "").ToUpper(); return retStr; } }
2、處理引數的類:
public class RequestHandler { public RequestHandler(HttpContext httpContext) { Parameters = new Hashtable(); this.HttpContext = httpContext ?? HttpContext.Current; } /// <summary> /// 金鑰 /// </summary> private string Key; protected HttpContext HttpContext; /// <summary> /// 請求的引數 /// </summary> protected Hashtable Parameters; /// <summary> /// debug資訊 /// </summary> private string DebugInfo; /// <summary> /// 初始化函式 /// </summary> public virtual void Init() { } /// <summary> /// 獲取debug資訊 /// </summary> /// <returns></returns> public String GetDebugInfo() { return DebugInfo; } /// <summary> /// 獲取金鑰 /// </summary> /// <returns></returns> public string GetKey() { return Key; } /// <summary> /// 設定金鑰 /// </summary> /// <param name="key"></param> public void SetKey(string key) { this.Key = key; } /// <summary> /// 設定引數值 /// </summary> /// <param name="parameter"></param> /// <param name="parameterValue"></param> public void SetParameter(string parameter, string parameterValue) { if (parameter != null && parameter != "") { if (Parameters.Contains(parameter)) { Parameters.Remove(parameter); } Parameters.Add(parameter, parameterValue); } } /// <summary> /// 建立md5摘要,規則是:按引數名稱a-z排序,遇到空值的引數不參加簽名 /// </summary> /// <param name="key">引數名</param> /// <param name="value">引數值</param> /// key和value通常用於填充最後一組引數 /// <returns></returns> public virtual string CreateMd5Sign(string key, string value) { StringBuilder sb = new StringBuilder(); ArrayList akeys = new ArrayList(Parameters.Keys); akeys.Sort(); foreach (string k in akeys) { string v = (string)Parameters[k]; if (null != v && "".CompareTo(v) != 0 && "sign".CompareTo(k) != 0 && "key".CompareTo(k) != 0) { sb.Append(k "=" v "&"); } } sb.Append(key "=" value); string sign = MD5UtilHelper.GetMD5(sb.ToString(), GetCharset()).ToUpper(); return sign; } /// <summary> /// 輸出XML /// </summary> /// <returns></returns> public string ParseXML() { StringBuilder sb = new StringBuilder(); sb.Append("<xml>"); foreach (string k in Parameters.Keys) { string v = (string)Parameters[k]; if (Regex.IsMatch(v, @"^[0-9.]$")) { sb.Append("<" k ">" v "</" k ">"); } else { sb.Append("<" k "><![CDATA[" v "]]></" k ">"); } } sb.Append("</xml>"); return sb.ToString(); } /// <summary> /// 設定debug資訊 /// </summary> /// <param name="debugInfo"></param> public void SetDebugInfo(String debugInfo) { this.DebugInfo = debugInfo; } public Hashtable GetAllParameters() { return this.Parameters; } protected virtual string GetCharset() { return this.HttpContext.Request.ContentEncoding.BodyName; } }
3、呼叫現金紅包處理類:
/// <summary> /// 企業號微信支付介面 /// </summary> public static class TenPay { #region 企業向使用者發紅包 /// <summary> /// 用於企業向微信使用者個人發紅包 /// 目前支援向指定微信使用者的openid個人發紅包 /// </summary> /// <param name="certPassword">apiclient_cert.p12證書密碼即商戶號</param> /// <param name="data">微信支付需要post的xml資料</param> /// <param name="certPath">apiclient_cert.p12的證書物理位置(例如:E:\projects\文件\微信商戶平臺證書\商戶平臺API證書</param> /// <param name="timeOut"></param> /// <returns></returns> public static string Sendredpack(string data, string certPassword,string certPath, int timeOut = Config.TIME_OUT) { var urlFormat = "https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack"; string cert = certPath; ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult); X509Certificate2 cer = new X509Certificate2(cert, certPassword, X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.MachineKeySet); var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data); MemoryStream ms = new MemoryStream(); ms.Write(formDataBytes, 0, formDataBytes.Length); ms.Seek(0, SeekOrigin.Begin);//設定指標讀取位置 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(urlFormat); request.ClientCertificates.Add(cer); request.Method = "POST"; request.Timeout = timeOut; request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.57 Safari/537.36"; #region 輸入二進位制流 if (ms != null) { ms.Position = 0; //直接寫入流 Stream requestStream = request.GetRequestStream(); byte[] buffer = new byte[1024]; int bytesRead = 0; while ((bytesRead = ms.Read(buffer, 0, buffer.Length)) != 0) { requestStream.Write(buffer, 0, bytesRead); } ms.Close();//關閉檔案訪問 } #endregion HttpWebResponse response = (HttpWebResponse)request.GetResponse(); using (Stream responseStream = response.GetResponseStream()) { using (StreamReader myStreamReader = new StreamReader(responseStream, Encoding.GetEncoding("utf-8"))) { string retString = myStreamReader.ReadToEnd(); return retString; } } } private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { if (errors == SslPolicyErrors.None) return true; return false; } #endregion }
4、呼叫現金紅包介面
#region 傳送紅包 bool fals = false; //記錄傳送紅包是否成功 string xmlResult = null; //現金紅包介面返回的xml string certPath = null; //證書在伺服器的物理位置 string data = null; //呼叫現金紅包介面需要的資料 try { //建立支付應答物件 RequestHandler packageReqHandler = new RequestHandler(null); //初始化 packageReqHandler.Init(); string nonceStr = TenPayV3Util.GetNoncestr(); //時間戳 //設定package訂單引數 packageReqHandler.SetParameter("nonce_str", nonceStr); //隨機字串,不長於32位 packageReqHandler.SetParameter("mch_billno", System.Configuration.ConfigurationManager.AppSettings["TenPayV3_MchId"] model.JournalNumber);//商戶訂單號(每個訂單號必須唯一)組成:mch_id yyyymmdd 10位一天內不能重複的數字。介面根據商戶訂單號支援重入,如出現超時可再呼叫。 packageReqHandler.SetParameter("mch_id", System.Configuration.ConfigurationManager.AppSettings["TenPayV3_MchId"]); //微信支付分配的商戶號 packageReqHandler.SetParameter("wxappid", System.Configuration.ConfigurationManager.AppSettings["TenPayV3_AppId"]);//微信分配的公眾賬號ID(企業號corpid即為此appId)。介面傳入的所有appid應該為公眾號的appid(在mp.weixin.qq.com申請的),不能為APP的appid(在open.weixin.qq.com申請的)。 packageReqHandler.SetParameter("send_name", "測試");//商戶名稱 packageReqHandler.SetParameter("re_openid", model.BankCard); //使用者openid 接受紅包的使用者使用者在wxappid下的openid packageReqHandler.SetParameter("total_amount", Convert.ToInt32((decimal)(model.Amount * 100M)).ToString(CultureInfo.InvariantCulture)); //付款金額 單位分 packageReqHandler.SetParameter("total_num", "1"); //紅包發放總人數 packageReqHandler.SetParameter("wishing", "測試紅包"); //紅包祝福語 packageReqHandler.SetParameter("client_ip", HttpContext.Current.Request.UserHostAddress);//Ip地址 packageReqHandler.SetParameter("act_name", "測試紅包");//活動名稱 packageReqHandler.SetParameter("remark", "測試紅包"); //備註 string sign = packageReqHandler.CreateMd5Sign("key", System.Configuration.ConfigurationManager.AppSettings["TenPayV3_Key"]); packageReqHandler.SetParameter("sign", sign); //簽名 data = packageReqHandler.ParseXML(); certPath = Server.MapPath("~/") System.Configuration.ConfigurationManager.AppSettings["certPath"]; xmlResult = Sendredpack(data, System.Configuration.ConfigurationManager.AppSettings["TenPayV3_MchId"],certPath); var res = XDocument.Parse(xmlResult); string return_code = res.Element("xml").Element("return_code").Value; if ("SUCCESS".Equals(return_code)) { string result_code = res.Element("xml").Element("result_code").Value; if ("SUCCESS".Equals(result_code)) { fals = true; } } } catch (Exception exception) { } #endregion
注意:證書所在資料夾許可權,IIS必須有許可權對該資料夾操作的許可權。
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