public class Config{ 
// 應(yīng)用ID,您的APPID 
public static string AppId = ""; 
// 支付寶網(wǎng)關(guān) 
public static string Gatewayurl = ""; 
// 商戶私鑰，您的原始格式RSA私鑰 
public static string PrivateKey = ""; 
// 支付寶公鑰,查看地址：https://openhome.alipay.com/platform/keyManage.htm 對應(yīng)APPID下的支付寶公鑰。 
public static string AlipayPublicKey = ""; 
 // 簽名方式 
public static string SignType = "RSA2"; 
// 編碼格式 
public static string CharSet = "UTF-8";}

/// 發(fā)起支付請求/// </summary>/// <param name="tradeno">外部訂單號，商戶網(wǎng)站訂單系統(tǒng)中唯一的訂單號</param>/// 
<param name="subject">訂單名稱</param>/// <param name="totalAmout">付款金額</param>/// 
<param name="itemBody">商品描述</param>/// <returns></returns>[HttpPost]
public void PayRequest(string tradeno,string subject,string totalAmout,string itemBody){ 
DefaultAopClient 
client = new DefaultAopClient(Config.Gatewayurl, Config.AppId, Config.PrivateKey, "json", "2.0", Config.SignType, Config.AlipayPublicKey, Config.CharSet, false); // 組裝業(yè)務(wù)參數(shù)model AlipayTradePagePayModel model = new AlipayTradePagePayModel(); 
model.Body = itemBody; 
model.Subject = subject; 
model.TotalAmount = totalAmout; 
model.OutTradeNo = tradeno; 
model.ProductCode = "FAST_INSTANT_TRADE_PAY"; AlipayTradePagePayRequest 
request = new AlipayTradePagePayRequest(); 
// 設(shè)置同步回調(diào)地址 
request.SetReturnUrl("http://localhost:5000/Pay/Callback"); 
 // 設(shè)置異步通知接收地址 
request.SetNotifyUrl(""); 
// 將業(yè)務(wù)model載入到request 
request.SetBizModel(model); 
var response = client.SdkExecute(request); Console.WriteLine($"訂單支付發(fā)起成功，訂單號：{tradeno}"); 
//跳轉(zhuǎn)支付寶支付 
Response.Redirect(Config.Gatewayurl + "?" + response.Body);}

/// <summary>/// 支付異步回調(diào)通知 需配置域名 因?yàn)槭侵Ц秾氈鲃觩ost請求這個action 所以要通過域名訪問或者公網(wǎng)ip/// </summary>public async void Notify(){ 
/* 實(shí)際驗(yàn)證過程建議商戶添加以下校驗(yàn)。 
 1、商戶需要驗(yàn)證該通知數(shù)據(jù)中的out_trade_no是否為商戶系統(tǒng)中創(chuàng)建的訂單號， 
 2、判斷total_amount是否確實(shí)為該訂單的實(shí)際金額（即商戶訂單創(chuàng)建時的金額）， 
3、校驗(yàn)通知中的seller_id（或者seller_email) 是否為out_trade_no這筆單據(jù)的對應(yīng)的操作方（有的時候，一個商戶可能有多個seller_id/seller_email） 
 4、驗(yàn)證app_id是否為該商戶本身。 */ Dictionary<string, string> sArray = GetRequestPost(); 
if (sArray.Count != 0) 
 { 
bool flag = AlipaySignature.RSACheckV1(sArray, Config.AlipayPublicKey,Config.CharSet, Config.SignType, false); 
if (flag) 
{  
//交易狀態(tài)  
//判斷該筆訂單是否在商戶網(wǎng)站中已經(jīng)做過處理  
 //如果沒有做過處理，根據(jù)訂單號（out_trade_no）在商戶網(wǎng)站的訂單系統(tǒng)中查到該筆訂單的詳細(xì)，并執(zhí)行商戶的業(yè)務(wù)程序  
//請務(wù)必判斷請求時的total_amount與通知時獲取的total_fee為一致的  
//如果有做過處理，不執(zhí)行商戶的業(yè)務(wù)程序  
 //注意：  
//退款日期超過可退款期限后（如三個月可退款），支付寶系統(tǒng)發(fā)送該交易狀態(tài)通知  
Console.WriteLine(Request.Form["trade_status"]);  
await Response.WriteAsync("success"); 
 } 
else 
{  
await Response.WriteAsync("fail"); 
} 
 }}

/// <summary>/// 支付同步回調(diào)/// </summary>[HttpGet]public IActionResult Callback(){ /* 實(shí)際驗(yàn)證過程建議商戶添加以下校驗(yàn)。 
 1、商戶需要驗(yàn)證該通知數(shù)據(jù)中的out_trade_no是否為商戶系統(tǒng)中創(chuàng)建的訂單號， 
2、判斷total_amount是否確實(shí)為該訂單的實(shí)際金額（即商戶訂單創(chuàng)建時的金額）， 
3、校驗(yàn)通知中的seller_id（或者seller_email) 是否為out_trade_no這筆單據(jù)的對應(yīng)的操作方（有的時候，一個商戶可能有多個seller_id/seller_email） 
 4、驗(yàn)證app_id是否為該商戶本身。 */ Dictionary<string, string> sArray = GetRequestGet(); if (sArray.Count != 0) 
{ 
 bool flag = AlipaySignature.RSACheckV1(sArray, Config.AlipayPublicKey, Config.CharSet, Config.SignType, false); 
if (flag) 
{  
Console.WriteLine($"同步驗(yàn)證通過，訂單號：{sArray["out_trade_no"]}");  
 ViewData["PayResult"] = "同步驗(yàn)證通過"; } else 
{  
Console.WriteLine($"同步驗(yàn)證失敗，訂單號：{sArray["out_trade_no"]}");  
 ViewData["PayResult"] = "同步驗(yàn)證失敗"; 
 } 
} return View();
}

[HttpPost]public JsonResult Query(string tradeno, string alipayTradeNo){ 
 DefaultAopClient client = new DefaultAopClient(Config.Gatewayurl, Config.AppId, Config.PrivateKey, "json", "2.0", Config.SignType, Config.AlipayPublicKey, Config.CharSet, false); 
AlipayTradeQueryModel model = new AlipayTradeQueryModel(); 
 model.OutTradeNo = tradeno; 
model.TradeNo = alipayTradeNo; 
 AlipayTradeQueryRequest request = new AlipayTradeQueryRequest(); 
request.SetBizModel(model); 
var response = client.Execute(request); 
return Json(response.Body);}

/// <summary>
/// 訂單退款
/// </summary>/// <param name="tradeno">商戶訂單號</param>/// <param name="alipayTradeNo">支付寶交易號</param>/// <param name="refundAmount">退款金額</param>/// <param name="refundReason">退款原因</param>/// <param name="refundNo">退款單號</param>/// <returns></returns>[HttpPost]public JsonResult Refund(string tradeno,string alipayTradeNo,string refundAmount,string refundReason,string refundNo){ DefaultAopClient client = new DefaultAopClient(Config.Gatewayurl, Config.AppId, Config.PrivateKey, "json", "2.0", Config.SignType, Config.AlipayPublicKey, Config.CharSet, false); 
 AlipayTradeRefundModel model = new AlipayTradeRefundModel(); model.OutTradeNo = tradeno; model.TradeNo = alipayTradeNo; 
model.RefundAmount = refundAmount; model.RefundReason = refundReason; model.OutRequestNo = refundNo; AlipayTradeRefundRequest request = new AlipayTradeRefundRequest(); 
request.SetBizModel(model); 
 var response = client.Execute(request); return Json(response.Body);}

/// <summary>
/// 退款查詢
/// </summary>
/// <param name="tradeno">商戶訂單號</param>
/// <param name="alipayTradeNo">支付寶交易號</param>
/// <param name="refundNo">退款單號</param>
/// <returns></returns>
[HttpPost]
public JsonResult RefundQuery(string tradeno,string alipayTradeNo,string refundNo)
{
 DefaultAopClient client = new DefaultAopClient(Config.Gatewayurl, Config.AppId, Config.PrivateKey, "json", "2.0",
  Config.SignType, Config.AlipayPublicKey, Config.CharSet, false);
 if (string.IsNullOrEmpty(refundNo))
 {
  refundNo = tradeno;
 }
 AlipayTradeFastpayRefundQueryModel model = new AlipayTradeFastpayRefundQueryModel();
 model.OutTradeNo = tradeno;
 model.TradeNo = alipayTradeNo;
 model.OutRequestNo = refundNo;
 AlipayTradeFastpayRefundQueryRequest request = new AlipayTradeFastpayRefundQueryRequest();
 request.SetBizModel(model);
 var response = client.Execute(request);
 return Json(response.Body);
}

/// <summary>
/// 關(guān)閉訂單
/// </summary>
/// <param name="tradeno">商戶訂單號</param>
/// <param name="alipayTradeNo">支付寶交易號</param>
/// <returns></returns>
[HttpPost]
public JsonResult OrderClose(string tradeno, string alipayTradeNo)
{
 DefaultAopClient client = new DefaultAopClient(Config.Gatewayurl, Config.AppId, Config.PrivateKey, "json", "2.0",
  Config.SignType, Config.AlipayPublicKey, Config.CharSet, false);
 AlipayTradeCloseModel model = new AlipayTradeCloseModel();
 model.OutTradeNo = tradeno;
 model.TradeNo = alipayTradeNo;
 AlipayTradeCloseRequest request = new AlipayTradeCloseRequest();
 request.SetBizModel(model);
 var response = client.Execute(request);
 return Json(response.Body);
}