C#和Google Checkout - 从服务器获取回复？

Question

在使用C#和GCheckout API时,是否有关于如何从Google Checkout事务中获取响应的教程.我能找到的所有示例都是针对API的先前版本而不是当前版本(2.5).更具体地说,我想看一个谷歌将在没有和HTTPS连接的情况下发回给我的回复示例.我知道它是最小的数据,但我仍然希望看到它的一个例子,看看其他人如何解析它.

Answer 1

Google 在内部发送通知
创建一个如下所示的通知页面：

<%@ Import Namespace="System.IO" %>
<%@ Import Namespace="GCheckout" %>
<%@ Import Namespace="GCheckout.AutoGen" %>
<%@ Import Namespace="GCheckout.Util" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<%@ Import Namespace="System.Text" %>

<script runat="server" language="c#">

string serialnum = string.Empty;
void Page_Load(Object sender, EventArgs e)
{
    // Extract the XML from the request.
    Stream RequestStream = Request.InputStream;
    StreamReader RequestStreamReader = new StreamReader(RequestStream);
    string RequestXml = RequestStreamReader.ReadToEnd();
    RequestStream.Close();
    // Act on the XML.
    switch (EncodeHelper.GetTopElement(RequestXml))
    {
        case "new-order-notification":
            NewOrderNotification N1 = (NewOrderNotification)EncodeHelper.Deserialize(RequestXml, typeof(NewOrderNotification));
            
                string OrderNumber1 = N1.googleordernumber;
                string ShipToName = N1.buyershippingaddress.contactname;
                string ShipToAddress1 = N1.buyershippingaddress.address1;
                string ShipToAddress2 = N1.buyershippingaddress.address2;
                string ShipToCity = N1.buyershippingaddress.city;
                string ShipToState = N1.buyershippingaddress.region;
                string ShipToZip = N1.buyershippingaddress.postalcode;
                System.Xml.XmlNode[] arr = N1.shoppingcart.merchantprivatedata.Any;
                String PData = String.Empty;
                try
                {
                    PData = arr[0].InnerText;
                }
                catch { PData = "Error"; }
                decimal TotalPrice = 0.0M;
                foreach (Item ThisItem in N1.shoppingcart.items)
                {
                    string Name = ThisItem.itemname;
                    int Quantity = ThisItem.quantity;
                    decimal Price = ThisItem.unitprice.Value;
                    TotalPrice += Price * Quantity;
                }
                serialnum = N1.serialnumber;
                string Message = "Order No : " + OrderNumber1 + " Total Price = $" + TotalPrice + "\r\nP. Data:" + PData;
           
             LogTransaction(OrderNumber1, serialnum, Message, PData);
            SendGoogleAcknowledgement();
            break;
        case "risk-information-notification":
            RiskInformationNotification N2 = (RiskInformationNotification)EncodeHelper.Deserialize(RequestXml, typeof(RiskInformationNotification));
            // This notification tells us that Google has authorized the order and it has passed the fraud check.
            // Use the data below to determine if you want to accept the order, then start processing it.
            string OrderNumber2 = N2.googleordernumber;
            string AVS = N2.riskinformation.avsresponse;
            string CVN = N2.riskinformation.cvnresponse;
            bool SellerProtection = N2.riskinformation.eligibleforprotection;
            serialnum = N2.serialnumber;
            break;
        case "order-state-change-notification":
            OrderStateChangeNotification N3 = (OrderStateChangeNotification)EncodeHelper.Deserialize(RequestXml, typeof(OrderStateChangeNotification));
            // The order has changed either financial or fulfillment state in Google's system.
            string OrderNumber3 = N3.googleordernumber;
            string NewFinanceState = N3.newfinancialorderstate.ToString();
            string NewFulfillmentState = N3.newfulfillmentorderstate.ToString();
            string PrevFinanceState = N3.previousfinancialorderstate.ToString();
            string PrevFulfillmentState = N3.previousfulfillmentorderstate.ToString();
            serialnum = N3.serialnumber;
            break;
        case "charge-amount-notification":
            ChargeAmountNotification N4 = (ChargeAmountNotification)EncodeHelper.Deserialize(RequestXml, typeof(ChargeAmountNotification));
            // Google has successfully charged the customer's credit card.
            string OrderNumber4 = N4.googleordernumber;
            decimal ChargedAmount = N4.latestchargeamount.Value;
            serialnum = N4.serialnumber;
            break;
        case "refund-amount-notification":
            RefundAmountNotification N5 = (RefundAmountNotification)EncodeHelper.Deserialize(RequestXml, typeof(RefundAmountNotification));
            // Google has successfully refunded the customer's credit card.
            string OrderNumber5 = N5.googleordernumber;
            decimal RefundedAmount = N5.latestrefundamount.Value;
            serialnum = N5.serialnumber;
            break;
        case "chargeback-amount-notification":
            ChargebackAmountNotification N6 = (ChargebackAmountNotification)EncodeHelper.Deserialize(RequestXml, typeof(ChargebackAmountNotification));
            // A customer initiated a chargeback with his credit card company to get her money back.
            string OrderNumber6 = N6.googleordernumber;
            decimal ChargebackAmount = N6.latestchargebackamount.Value;
            serialnum = N6.serialnumber;
            break;
        default:
            break;
    }
}

private void SendGoogleAcknowledgement()
{
    StringBuilder responseXml = new StringBuilder();
    responseXml.Append("<?xml version='1.0' encoding='UTF-8'?>");
    responseXml.Append("<notifiation-acknowledgment xmlns='http://checkout.google.com/schema/2' />");
    HttpResponse response =
    System.Web.HttpContext.Current.Response;
    response.StatusCode = 200;
    response.ContentType = "text/xml";
    response.Write(responseXml.ToString());
    response.End();
    
}

protected virtual void LogTransaction(string OrderNo, string SerialNo, string Message, String PData)
{
    try
    {
        //Insert record in database
        string sql = "Update GoogleOrder Set GoogleOrderNumber = @GoogleOrderNumber WHERE PrivateData = @PData";
        using (SqlConnection Conn = new SqlConnection(ConfigurationManager.ConnectionStrings["inCommandConnectionString"].ConnectionString))
        {
            Conn.Open();
            SqlCommand Cmd = new SqlCommand(sql, Conn);
            Cmd.Parameters.AddWithValue("@GoogleOrderNumber", OrderNo);
            Cmd.Parameters.AddWithValue("@PData", PData);
            Cmd.ExecuteNonQuery();
            Conn.Close();

        }
    }
    catch (Exception ex)
    {
        LogError("Error to Save The order No" + OrderNo);
    }
    //Insert record in text file 
    LogError(Message);
}
private void LogError(String Message)
{
    String LogFile = ConfigurationManager.AppSettings.Get("LinkPointLogFile");
    if (LogFile != "")
    {
        byte[] binLogString = Encoding.Default.GetBytes(Message);

        try
        {
            FileStream loFile = new FileStream(LogFile, FileMode.OpenOrCreate, FileAccess.Write, FileShare.Write);
            loFile.Seek(0, SeekOrigin.End);
            loFile.Write(binLogString, 0, binLogString.Length);
            loFile.Close();
        }
        catch { ; }
    }
}

在 Google checkout 设置页面上设置通知页面名称和路径，您将在该页面上收到响应。要测试通知页面是否正常工作，请尝试将事务记录到 txt 文件中，一旦一切顺利，您就可以删除该代码。

在此示例中，PData 是我发送到 google checkout 并在通知中返回相同号码的号码，我用它来将交易与特定订单相匹配。