protected void Refund()
{
//创建请求对象
RefundRequestHandler reqHandler = new RefundRequestHandler(null);
//通信对象
TenpayHttpClient httpClient = new TenpayHttpClient();
//应答对象
ClientResponseHandler resHandler = new ClientResponseHandler();
//-----------------------------
//设置请求参数
//-----------------------------
reqHandler.Init();
reqHandler.SetKey(TenPayInfo.Key);
reqHandler.SetParameter("partner", TenPayInfo.PartnerId);
//out_trade_no和transaction_id至少一个必填，同时存在时transaction_id优先
//reqHandler.setParameter("out_trade_no", "1458268681");
reqHandler.SetParameter("transaction_id", "1900000109201103020030626316");
reqHandler.SetParameter("out_refund_no", "2011030201");
reqHandler.SetParameter("total_fee", "1");
reqHandler.SetParameter("refund_fee", "1");
reqHandler.SetParameter("refund_fee", "1");
reqHandler.SetParameter("op_user_id", "1900000109");
reqHandler.SetParameter("op_user_passwd", MD5Util.GetMD5("111111", "GBK"));
reqHandler.SetParameter("service_version", "1.1");
string requestUrl = reqHandler.GetRequestURL();
httpClient.SetCertInfo("c:\\key\\1900000109.pfx", "1900000109");
//设置请求内容
httpClient.SetReqContent(requestUrl);
//设置超时
httpClient.SetTimeOut(10);
string rescontent = "";
//后台调用
if (httpClient.Call())
{
//获取结果
rescontent = httpClient.GetResContent();
resHandler.SetKey(TenPayInfo.Key);
//设置结果参数
resHandler.SetContent(rescontent);
//判断签名及结果
if (resHandler.IsTenpaySign() && resHandler.GetParameter("retcode") == "0")
{
//商户订单号
string out_trade_no = resHandler.GetParameter("out_trade_no");
//财付通订单号
string transaction_id = resHandler.GetParameter("transaction_id");
//业务处理
Response.Write("OK,transaction_id=" + resHandler.GetParameter("transaction_id") + "<br>");
}
else
{
//错误时，返回结果未签名。
//如包格式错误或未确认结果的，请使用原来订单号重新发起，确认结果，避免多次操作
Response.Write("业务错误信息或签名错误:" + resHandler.GetParameter("retcode") + "," + resHandler.GetParameter("retmsg") + "<br>");
}
}
else
{
//后台调用通信失败
Response.Write("call err:" + httpClient.GetErrInfo() + "<br>" + httpClient.GetResponseCode() + "<br>");
//有可能因为网络原因，请求已经处理，但未收到应答。
}
//获取debug信息,建议把请求、应答内容、debug信息，通信返回码写入日志，方便定位问题
Response.Write("http res:" + httpClient.GetResponseCode() + "," + httpClient.GetErrInfo() + "<br>");
Response.Write("req url:" + requestUrl + "<br/>");
Response.Write("req debug:" + reqHandler.GetDebugInfo() + "<br/>");
Response.Write("res content:" + Server.HtmlEncode(rescontent) + "<br/>");
Response.Write("res debug:" + Server.HtmlEncode(resHandler.GetDebugInfo()) + "<br/>");
}