/// <summary>
/// 是否财付通签名
/// </summary>
/// <returns></returns>
public override Boolean isTenpaySign()
{
//获取参数
string cmdno = getParameter("cmdno");
string pay_result = getParameter("pay_result");
string date = getParameter("date");
string transaction_id = getParameter("transaction_id");
string sp_billno = getParameter("sp_billno");
string total_fee = getParameter("total_fee");
string fee_type = getParameter("fee_type");
string attach = getParameter("attach");
string tenpaySign = getParameter("sign").ToUpper();
string key = this.getKey();
//组织签名串
StringBuilder sb = new StringBuilder();
sb.Append("cmdno=" + cmdno + "&");
sb.Append("pay_result=" + pay_result + "&");
sb.Append("date=" + date + "&");
sb.Append("transaction_id=" + transaction_id + "&");
sb.Append("sp_billno=" + sp_billno + "&");
sb.Append("total_fee=" + total_fee + "&");
sb.Append("fee_type=" + fee_type + "&");
sb.Append("attach=" + attach + "&");
sb.Append("key=" + key);
//算出摘要
string sign = MD5Helper.GetMD5(sb.ToString(), getCharset());
//debug信息
setDebugInfo(sb.ToString() + " => sign:" + sign +
" tenpaySign:" + tenpaySign);
return(sign.Equals(tenpaySign));
}