红包功能简单介绍:
1、商户调用接口时,通过指定发送对象以及发送金额的方式发放红包,这样的方式,允许商户灵活的应用于各种各样丰富的活动场景
2、领取到红包后,用户的资金直接进入微信零钱,避免繁复的领奖流程,带给用户微信支付原生的流畅体验
现金红包官网文档地址:https://pay.weixin.qq.com/wiki/doc/api/tools/cash_coupon.PHP?chapter=13_1
调用现金红包接口需要使用到证书,请前往商户平台下载证书
官网有关详细证书的介绍:https://pay.weixin.qq.com/wiki/doc/api/tools/cash_coupon.PHP?chapter=4_3
因为发送现金红包是从商户平台余额扣款,所以商户平台的账户余额必须有充足的余额
/// <summary>/// MD5UtilHelper 的摘要说明。/// </summary>public class MD5UtilHelper { public MD5UtilHelper() { // // Todo: 在此处添加构造函数逻辑 // } /// <summary> /// 获取大写的MD5签名结果 /// </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(); //创建md5对象 byte[] inputBye; byte[] outputBye; //使用GB2312编码方式把字符串转化为字节数组. 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、处理参数的类:
public class RequestHandler { public RequestHandler(HttpContext httpContext) { Parameters = new Hashtable(); this.HttpContext = httpContext ?? HttpContext.Current; } /// <summary> /// 密钥 /// </summary> private string Key; protected HttpContext HttpContext; /// <summary> /// 请求的参数 /// </summary> protected Hashtable Parameters; /// <summary> /// debug信息 /// </summary> private string DebugInfo; /// <summary> /// 初始化函数 /// </summary> public virtual void Init() { } /// <summary> /// 获取debug信息 /// </summary> /// <returns></returns> public String GetDebugInfo() { return DebugInfo; } /// <summary> /// 获取密钥 /// </summary> /// <returns></returns> public string GetKey() { return Key; } /// <summary> /// 设置密钥 /// </summary> /// <param name=key></param> public void SetKey(string key) { this.Key = key; } /// <summary> /// 设置参数值 /// </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> /// 创建md5摘要,规则是:按参数名称a-z排序,遇到空值的参数不参加签名 /// </summary> /// <param name=key>参数名</param> /// <param name=value>参数值</param> /// key和value通常用于填充最后一组参数 /// <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> /// 输出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> /// 设置debug信息 /// </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、调用现金红包处理类:
/// <summary> /// 企业号微信支付接口 /// </summary> public static class TenPay { #region 企业向用户发红包 /// <summary> /// 用于企业向微信用户个人发红包 /// 目前支持向指定微信用户的openid个人发红包 /// </summary> /// <param name=certPassword>apiclient_cert.p12证书密码即商户号</param> /// <param name=data>微信支付需要post的xml数据</param> /// <param name=certPath>apiclient_cert.p12的证书物理位置(例如:E:\projects\文档\微信商户平台证书\商户平台API证书</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);//设置指针读取位置 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 输入二进制流 if (ms != null) { ms.Position = 0; //直接写入流 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();//关闭文件访问 } #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、调用现金红包接口
#region 发送红包bool fals = false; //记录发送红包是否成功string xmlResult = null; //现金红包接口返回的xmlstring certPath = null; //证书在服务器的物理位置string data = null; //调用现金红包接口需要的数据try { //创建支付应答对象 RequestHandler packageReqHandler = new RequestHandler(null); //初始化 packageReqHandler.Init(); string nonceStr = TenPayV3Util.GetNoncestr(); //时间戳 //设置package订单参数 packageReqHandler.SetParameter(nonce_str, nonceStr); //随机字符串,不长于32位 packageReqHandler.SetParameter(mch_billno, System.Configuration.ConfigurationManager.AppSettings[TenPayV3_MchId] + model.JournalNumber);//商户订单号(每个订单号必须唯一)组成:mch_id+yyyymmdd+10位一天内不能重复的数字。接口根据商户订单号支持重入,如出现超时可再调用。 packageReqHandler.SetParameter(mch_id, System.Configuration.ConfigurationManager.AppSettings[TenPayV3_MchId]); //微信支付分配的商户号 packageReqHandler.SetParameter(wxappid, System.Configuration.ConfigurationManager.AppSettings[TenPayV3_AppId]);//微信分配的公众账号ID(企业号corpid即为此appId)。接口传入的所有appid应该为公众号的appid(在mp.weixin.qq.com申请的),不能为APP的appid(在open.weixin.qq.com申请的)。 packageReqHandler.SetParameter(send_name, 测试);//商户名称 packageReqHandler.SetParameter(re_openid, model.BankCard); //用户openid 接受红包的用户用户在wxappid下的openid packageReqHandler.SetParameter(total_amount, Convert.ToInt32((decimal)(model.Amount * 100M)).ToString(CultureInfo.InvariantCulture)); //付款金额 单位分 packageReqHandler.SetParameter(total_num, 1); //红包发放总人数 packageReqHandler.SetParameter(wishing, 测试红包); //红包祝福语 packageReqHandler.SetParameter(client_ip, HttpContext.Current.Request.UserHostAddress);//Ip地址 packageReqHandler.SetParameter(act_name, 测试红包);//活动名称 packageReqHandler.SetParameter(remark, 测试红包); //备注 string sign = packageReqHandler.CreateMd5Sign(key, System.Configuration.ConfigurationManager.AppSettings[TenPayV3_Key]); packageReqHandler.SetParameter(sign, sign); //签名 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:证书所在文件夹权限,IIS必须有权限对该文件夹操作的权限。
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