.net接入支付寶支付接口的案例分析

小編給大家分享一下.net接入支付寶支付接口的案例分析，希望大家閱讀完這篇文章后大所收獲，下面讓我們一起去探討吧！

H5手機網站接入支付寶的支付接口，推薦使用支付寶提供的SDK來快速開發

我使用的是SDK開發

引用命名空間

using Aop.Api;
using Aop.Api.Request;
using Aop.Api.Response;
using Aop.Api.Util;

首頁需要定義一些常量

 static string serverUrl = "https://openapi.alipaydev.com/gateway.do";
    static string app_id = "**";  //開發者的應用ID
    static string format = "JSON";
    static string charset = "utf-8";
    static string sign_type = "RSA2"; //簽名格式
    static string version = "1.0";
    string UID = "2088102169707816";//賣家支付寶賬戶號
    //商戶私鑰
    static string merchant_private_key = "***";
    //支付寶公鑰
    static string alipay_public_key = "***";

這里的app_id,merchant_private_key,alipay_public_key 我就沒有列出來了，獲取的方法需要自己去支付寶平臺完成一些操作進行獲取

在用戶點擊網站付款時，我們需要喚醒支付寶，來進行支付

public string H5RequestPayWay(OrderPO order)
    {
      IAopClient client = new DefaultAopClient(serverUrl, app_id, merchant_private_key, format, version, sign_type, alipay_public_key, charset, false);
      AlipayTradeWapPayRequest request = new AlipayTradeWapPayRequest();
      string address= "http://m." + PathLogic1.RootDomain;
      request.SetReturnUrl(address+ "/WebPay/AlipayPayResult");//同步請求
      request.SetNotifyUrl(address + "/WebPay/AsyncPay");//異步請求
      var lstDetail = Context.Data.OrderDetail.Where(x => x.OrderNo == order.OrderNo).ToSelectList(x=>new { x.SkuName});
      StringBuilder sb = new StringBuilder();
      for (int i = 0; i < lstDetail.Count(); i++)
      {
        sb.Append(lstDetail[i].SkuName + ",");
      }
      request.BizContent = "{" +
  "\"body\":\""+sb.ToString().Substring(0,sb.Length-1)+"\"," +
  "\"subject\":\"袋鼠巴巴商品支付\"," +
  "\"out_trade_no\":\""+order.OrderNo+"\"," +
  "\"timeout_express\":\"90m\"," +
  "\"total_amount\":"+(order.TotalAmount.Value+order.TotalFreight.Value)+"," +
  "\"product_code\":\"QUICK_WAP_PAY\"" +
  " }";

      AlipayTradeWapPayResponse response = client.pageExecute(request);
       return response.Body;
    }

具體發送給支付寶的參數，自行去查看

執行方法后，買家輸入自己的支付寶賬號密碼進行支付，支付成功的結果，支付寶會以post的方式異步請求你的SetNotifyUrl的地址

這個SetNotifyUrl的地址必須要外網可以訪問，支付寶的請求才能進來

買家支付成功，商家修改訂單狀態和數據庫的操作，都在異步請求中執行

同步請求

public ActionResult AlipayPayResult()
    {
      ViewBag.result = "success";
      return View("PayResult");
    }

     /// <summary>
    /// 驗證通知數據的正確性
    /// </summary>
    /// <param name="out_trade_no"></param>
    /// <param name="total_amount"></param>
    /// <param name="seller_id"></param>
    /// <returns></returns> 
private SortedDictionary<string, string> GetRequestPost()
    {
      int i = 0;
      SortedDictionary<string, string> sArray = new SortedDictionary<string, string>();
      NameValueCollection coll;
      //Load Form variables into NameValueCollection variable.
      coll = Request.Form;

      // Get names of all forms into a string array.
      String[] requestItem = coll.AllKeys;

      for (i = 0; i < requestItem.Length; i++)
      {
        sArray.Add(requestItem[i], Request.Form[requestItem[i]]);
      }

      return sArray;
    }

 /// <summary>
    /// 驗簽
    /// </summary>
    /// <param name="inputPara"></param>
    /// <returns></returns>
    public Boolean Verify(SortedDictionary<string, string> inputPara)
    {
      Dictionary<string, string> sPara = new Dictionary<string, string>();    
      Boolean verifyResult = AlipaySignature.RSACheckV1(inputPara, alipay_public_key, charset,sign_type,false);
      return verifyResult;
    }

異步請求：

 [HttpPost]
    public void AsyncPay()
    {
      SortedDictionary<string, string> sPara = GetRequestPost();//將post請求過來的參數傳化為SortedDictionary
      if (sPara.Count > 0)
      {
        AlipayTradeWayPayServer pay = new AlipayTradeWayPayServer();
        Boolean VerifyResult = pay.Verify(sPara);//驗簽if (VerifyResult)
        {
          try
          {
             //商戶訂單號
            string out_trade_no = Request.Form["out_trade_no"];
            //支付寶交易號
            string trade_no = Request.Form["trade_no"];
            //支付金額
            decimal total_amount = Request.Form["total_amount"].ConvertType(Decimal.Zero);
            //實收金額
            //decimal receipt_amount = Request.Form["receipt_amount"].ConvertType(Decimal.Zero);
            //交易狀態
            string trade_status = Request.Form["trade_status"];
            //賣家支付寶賬號
            string seller_id = Request.Form["seller_id"];

            //商品描述
            string body = Request.Form["body"];
            //交易創建時間
            DateTime gmt_create = DateTime.Parse(Request.Form["gmt_create"]);
            //交易付款時間
            DateTime gmt_payment = DateTime.Parse(Request.Form["gmt_payment"]);
            string appid = Request.Form["app_id"];
            WriteError("驗證參數開始");
            Boolean DataValidity = pay.CheckInform(out_trade_no, total_amount, seller_id, appid);//商家判斷參數時候是否匹配if (DataValidity)
            {
              if (Request.Form["trade_status"] == "TRADE_FINISHED")
              {
                AlipayWayPayPO model = CreateAlipayWayPay(out_trade_no, trade_no, trade_status, gmt_create, gmt_payment);
                pay.PaySuccess(out_trade_no, model, Server.MapPath("~/" + DateTime.Today.ToString("yyMMdd") + ".txt"));//修改訂單
                //注意：
                //退款日期超過可退款期限后（如三個月可退款），支付寶系統發送該交易狀態通知
              }
              else if (Request.Form["trade_status"] == "TRADE_SUCCESS")
              {
                AlipayWayPayPO model = CreateAlipayWayPay(out_trade_no, trade_no, trade_status, gmt_create, gmt_payment);
                pay.PaySuccess(out_trade_no, model, Server.MapPath("~/" + DateTime.Today.ToString("yyMMdd") + ".txt"));//修改訂單
                //注意：
                //付款完成后，支付寶系統發送該交易狀態通知
              }
              else
              {

              }

              //——請根據您的業務邏輯來編寫程序（以上代碼僅作參考）——

              Response.Write("success"); //請不要修改或刪除

              /////////////////////////////////////////////////////////////////////////////////////////////////////////////
            }
          }
          catch (Exception ex)
          {
            
          }
        }
        else//驗證失敗
        {
          Response.Write("fail");
        }
      }
      else
      {
        Response.Write("無通知參數");
      }
    }

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