C#公众号开发之给用户发红包

/// <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;  }}

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;    }  }

 /// <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 }

#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