AllPay，http://www.allpay.com.tw/，欧付宝是台湾知名的第三方支付公司，拥有丰富的支付模式（支持和支付宝、财付通），只需要一次对接，各种支付模式均可使用。
接口编写SDK：http://www.allpay.com.tw/Service/API_Help?Anchor=AnchorDoc
官方提供了比较完整的SDK，里面有丰富的代码，这里只讲需要注意的地方：
1.欧付宝提供若干支付模式，可以再接口中指定（不给用户选择的机会）;也可以在接口中设置ALL，等到付款的时候让用户选择
2.确定支付模式后，便可以生成订单，然后等待支付
3.支付结果的确认是Server静默方式通知的，非URL跳转的方式，这点类似PayPal的Classic模式
4.提供沙箱模式http://vendor-stage.allpay.com.tw,用户名StageTest，密码Test1234，在沙箱中可以任意下订单，模拟支付等等
5.正式模式的后台http://vendor.allpay.com.tw同样支持模拟付款的方式
6.支付结果接收service，注意需要验证来源，也就是CheckMacValue，验证方法后面给出
7.如果接口中不指定支付模式，oPayment.Send.ChoosePayment = PaymentMethod.ALL; 即使客户不选择支付宝支付，那么也需要将支付宝的支付选项填入
oPayment.SendExtend.PhoneNo = ""; oPayment.SendExtend.Email = ""; oPayment.SendExtend.UserName = "";
因为这三项是必填字段，注意是SendExtend。
8.ReturnURL 為Server 端的回應，歐付寶Server會直接將付款結果送到您指定的ReturnURL
OrderResultURL 則為 Client 端的回應，我們會將使用者的畫面轉導到您指定的OrderResultURL
ClientBackURL 主要的功能,是在交易完成的頁面中,若廠商端有設定網址,則在該頁面上會出現「返回商店」的按鈕,當消費者點選後,會導到所設定的網址。
9.MerchantTradeNo测试的时候如果两笔都是一样的，会导致第二次创建订单失败，这个要注意，每次最好用随机数
下面是支付界面，传入订单编号，通过调用AllPay接口，会默认跳转到AllPay去支付
public ActionResult PaymentByAllPay(Guid BillCode)
{
List<string> enErrors = new List<string>();
string szHtml = String.Empty;
try
{
using (AllInOne oPayment = new AllInOne())
{
/* 服務參數 */
oPayment.ServiceMethod = AllPay.Payment.Integration.HttpMethod.HttpPOST;
//oPayment.ServiceURL = "http://payment-stage.allpay.com.tw/Cashier/AioCheckOut";
oPayment.ServiceURL = "https://payment.allpay.com.tw/Cashier/AioCheckOut";
oPayment.HashKey = System.Configuration.ConfigurationManager.AppSettings["APHashKey"];
oPayment.HashIV = System.Configuration.ConfigurationManager.AppSettings["APHashIV"];
oPayment.MerchantID = System.Configuration.ConfigurationManager.AppSettings["MerchantID"];
IList<COM_Bill> list = WMSFactory.COM_Bill.FindByCondition("");
if (list == null || list.Count() != 1)
{
throw new Exception("Error:BillCode Is Wrong!");
}
COM_Bill bill = list.First();
IList<COM_BillSub> billSub = WMSFactory.COM_BillSub.FindByCondition("BillCode='" + BillCode.ToString() + "'");
/* 基本參數 */
string baseURI = Request.Url.Scheme + "://" + Request.Url.Authority + "/Order/";
//以后台服务通知的形式发送到该URL
oPayment.Send.ReturnURL = baseURI + "AllPayResult/"+BillCode.ToString().Replace("-","_");//完成付款,注意这里有严格的url限制，不能传递-
oPayment.Send.ClientBackURL = baseURI;
oPayment.Send.MerchantTradeNo = bill.Id.ToString()+DateTime.Parse(bill.CreateTime).ToString("yyyyMMddHHmmss") + new Random().Next(0, 9999).ToString();
oPayment.Send.MerchantTradeDate = DateTime.Now;
oPayment.Send.TotalAmount = (int)(bill.TotalAmount + bill.ShippingFee - bill.VoucherMoney);
oPayment.Send.TradeDesc = "物流费：" + bill.ShippingFee.ToString();
oPayment.Send.ChoosePayment = PaymentMethod.ALL;
oPayment.Send.ChooseSubPayment = PaymentMethodItem.None;
oPayment.Send.NeedExtraPaidInfo = ExtraPaymentInfo.No;
oPayment.Send.DeviceSource = DeviceType.PC;
//例(排除支付寶與財富通): Alipay#Tenpay
oPayment.Send.IgnorePayment = "";
// 加入選購商品資料。
foreach (COM_BillSub sb in billSub)
{
AllPay.Payment.Integration.Item item = new AllPay.Payment.Integration.Item();
item.Name = sb.SkcName + ":" + sb.Skc.ToString() + "," + sb.ColorName + "," + sb.SizeName;
item.Currency = "新台幣";
item.Price = sb.Price;
item.Quantity = sb.Num;
item.URL = "";
oPayment.Send.Items.Add(item);
//oPayment.SendExtend.AlipayItemCounts += sb.Num.ToString() + "#";
//oPayment.SendExtend.AlipayItemName += sb.SkcName + "#";
//oPayment.SendExtend.AlipayItemPrice += sb.Price.ToString() + "#";
}//物流费用
AllPay.Payment.Integration.Item shippingfeeitm = new AllPay.Payment.Integration.Item();
shippingfeeitm.Name = "Shipping";
shippingfeeitm.Currency = "新台幣";
shippingfeeitm.Price = bill.ShippingFee;
shippingfeeitm.Quantity = 1;
oPayment.Send.Items.Add(shippingfeeitm);
//oPayment.SendExtend.AlipayItemCounts += "1";
//oPayment.SendExtend.AlipayItemName += "Shipping";
//oPayment.SendExtend.AlipayItemPrice += bill.ShippingFee.ToString();
//获取物流信息
COM_Address address = WMSFactory.COM_Address.FindById(bill.ShippingId.ToString());
oPayment.SendExtend.PhoneNo = address.TelPhone;
oPayment.SendExtend.Email = member.Email;
oPayment.SendExtend.UserName = address.LastName + address.FirstName;
/* 產生訂單 */
enErrors.AddRange(oPayment.CheckOut());
/* 產生產生訂單 Html Code 的方法 */
enErrors.AddRange(oPayment.CheckOutString(ref szHtml));
Session.Add(BillCode.ToString(), oPayment.Send.MerchantTradeNo);
}
}
catch (Exception ex)
{
// 例外錯誤處理。
enErrors.Add(ex.Message);
}
finally
{
if (enErrors.Count() > 0)
throw new Exception(String.Join("<br />", enErrors));
}
//扣库存
DataTable dt = WMSFactory.COM_BillSub.UpdateStore(BillCode, 2);
if (dt != null && dt.Rows.Count > 0 && dt.Rows[0][0].ToString() != "0")
{
return RedirectToAction("PayResult", new { id = 3, msg = dt.Rows[0][0].ToString() });
}
ViewBag.AllPayRedirect = szHtml;
return View();
}
支付确认接口实现：
public void AllPayResult(string id)
{
List<string> enErrors = new List<string>();
Hashtable htFeedback = null;
id = id.Replace("_", "-");
log.Debug("进入allpayresult,id=" + id);
try
{
string szHashKey = System.Configuration.ConfigurationManager.AppSettings["APHashKey"];
string szHashIV = System.Configuration.ConfigurationManager.AppSettings["APHashIV"];
// 取回所有資料
if (enErrors.Count() == 0)
{ /* 支付後的回傳的基本參數 */
string szMerchantID = Request.Form["MerchantID"];
string szMerchantTradeNo = Request.Form["MerchantTradeNo"];
string szPaymentDate =Request.Form["PaymentDate"];
string szPaymentType = Request.Form["PaymentType"];
string szPaymentTypeChargeFee = Request.Form["PaymentTypeChargeFee"];
string szRtnCode = Request.Form["RtnCode"];
string szRtnMsg = Request.Form["RtnMsg"];
string szSimulatePaid = Request.Form["SimulatePaid"];
string szTradeAmt =Request.Form["TradeAmt"];
string szTradeDate =Request.Form["TradeDate"];
string szTradeNo = Request.Form["TradeNo"];
string szCheckMacValue = Request.Form["CheckMacValue"];
//一般回傳參數CMV(若需要其他檢查請自行增加)
Dictionary<string, string> Parameters = new Dictionary<string, string>();
Parameters.Add("MerchantID", szMerchantID);
Parameters.Add("MerchantTradeNo", szMerchantTradeNo);
Parameters.Add("RtnCode", szRtnCode);
Parameters.Add("RtnMsg", szRtnMsg);
Parameters.Add("TradeNo", szTradeNo);
Parameters.Add("TradeAmt", szTradeAmt);
Parameters.Add("PaymentDate", szPaymentDate);
Parameters.Add("PaymentType", szPaymentType);
Parameters.Add("PaymentTypeChargeFee", szPaymentTypeChargeFee);
Parameters.Add("TradeDate", szTradeDate);
Parameters.Add("SimulatePaid", szSimulatePaid);
string ParameterString = string.Join("&", Parameters.OrderBy(d => d.Key).Select(p => p.Key + "=" + p.Value));
string str = "HashKey=" + szHashKey + "&" + ParameterString + "&HashIV=" + szHashIV;
log.Debug("接收到AllPay返回值=" + str);
string urlEncodeStrPost = HttpUtility.UrlEncode(str);
//url大寫轉小寫
string lowerUrlEncodeStrPost = urlEncodeStrPost.ToLower();
//檢查碼要使用MD5加密
MD5 md5Hasher = MD5.Create();
byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(lowerUrlEncodeStrPost));
StringBuilder sBuilder = new StringBuilder();
for (int i = 0; i < data.Length; i++)
{
sBuilder.Append(data[i].ToString("X2"));
}
string sCheckMacValue = sBuilder.ToString();
log.Debug("mine:" + sCheckMacValue + ";param:" + szCheckMacValue);
if (szRtnCode == "1" && szSimulatePaid == "0" && sCheckMacValue == szCheckMacValue)
{
//更新订单状态
}
}
}
catch (Exception ex)
{ // 例外錯誤處理。
enErrors.Add(ex.Message);
}
finally
{
this.Response.Clear(); // 回覆成功訊息。
if (enErrors.Count() == 0)
this.Response.Write("1|OK"); // 回覆錯誤訊息。
else
this.Response.Write(String.Format("0|{0}", String.Join("\\r\\n", enErrors)));
this.Response.Flush();
this.Response.End();
}
}