【发布时间】：2015-02-24 17:03:54
【问题描述】：
public partial class ipn : System.Web.UI.Page
{
string connectionString = ConfigurationManager.ConnectionStrings["LocalSqlServer"].ToString();
String fname, lname, mc_gross, Pmtcurrency, Payer_email;
string receiver_email, payment_date, payment_status;
string txn_type, amount;
string payer_id, txn_id;
string Verify_sign;
string result;
protected void Page_Load(object sender, EventArgs e)
{
//Post back to either sandbox or live
string strSandbox = "https://www.sandbox.paypal.com/cgi-bin/webscr";
string strLive = "https://www.paypal.com/cgi-bin/webscr";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(strSandbox);
//Set values for the request back
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
byte[] param = Request.BinaryRead(HttpContext.Current.Request.ContentLength);
string strRequest = Encoding.ASCII.GetString(param);
string ipnPost = strRequest;
strRequest += "&cmd=_notify-validate";
req.ContentLength = strRequest.Length;
//Send the request to PayPal and get the response
StreamWriter streamOut = new StreamWriter(req.GetRequestStream(), System.Text.Encoding.ASCII);
streamOut.Write(strRequest);
streamOut.Close();
StreamReader streamIn = new StreamReader(req.GetResponse().GetResponseStream());
string strResponse = streamIn.ReadToEnd();
streamIn.Close();
// logging ipn messages... be sure that you give write
// permission to process executing this code
string logPathDir = ResolveUrl("Messages");
string logPath = string.Format("{0}\\{1}.txt",
Server.MapPath(logPathDir), DateTime.Now.Ticks);
File.WriteAllText(logPath, ipnPost);
if (strResponse == "VERIFIED")
{
result = "VERIFIED";
fname = Convert.ToString(HttpContext.Current.Request.Form["first_name"]);
lname = Convert.ToString(HttpContext.Current.Request.Form["last_name"]);
mc_gross = Convert.ToString(HttpContext.Current.Request.Form["mc_gross"]);
Pmtcurrency = Convert.ToString(HttpContext.Current.Request.Form["mc_currency"]);
Payer_email = Convert.ToString(HttpContext.Current.Request.Form["payer_email"]);
Payer_email = Payer_email.Replace("%40", "@");
txn_id = Convert.ToString(HttpContext.Current.Request.Form["txn_id"]);
payer_id = Convert.ToString(HttpContext.Current.Request.Form["payer_id"]);
amount = Convert.ToString(HttpContext.Current.Request.Form["payment_gross"]); ;
payment_date = Convert.ToString(HttpContext.Current.Request.Form["payment_date"]); ;
payment_date = payment_date.Replace("%3A", ":");
payment_date = payment_date.Replace("+", " ");
payment_date = payment_date.Replace("%2C", " ");
txn_type = Convert.ToString(HttpContext.Current.Request.Form["txn_type"]); // 'cart'
Verify_sign = "ipn";
payment_status = Convert.ToString(HttpContext.Current.Request.Form["payment_status"]); ;
receiver_email = Convert.ToString(HttpContext.Current.Request.Form["receiver_email"]);
receiver_email = receiver_email.Replace("%40", "@");
if (payment_status.Equals("Completed"))
{
/*
using (SqlConnection connection = new SqlConnection(connectionString))
using (SqlCommand command = connection.CreateCommand())
{
command.CommandText = "UPDATE table SET memPhone = @memPhone WHERE uName='testName'";
command.Parameters.AddWithValue("@memPhone", payment_status);
connection.Open();
command.ExecuteNonQuery();
connection.Dispose();
}
*/
}
else if (payment_status.Equals("Denied") || payment_status.Equals("Failed") || payment_status.Equals("Refunded") || payment_status.Equals("Reversed") || payment_status.Equals("Voided"))
{
}
else if (payment_status.Equals("In-Progress") || payment_status.Equals("Pending") || payment_status.Equals("Processed"))
{
}
else if (payment_status.Equals("Canceled_Reversal"))
{
}
else
{
}
}
else if (strResponse == "INVALID")
{
//log for manual investigation
}
else
{
//log response/ipn data for manual investigation
}
}
}
当它出现在 payment_status.Equals("Completed") 分支中时，IPN 处理程序（或任何其他 IPN 实现）不起作用：
using (SqlConnection connection = new SqlConnection(connectionString))
using (SqlCommand command = connection.CreateCommand())
{
command.CommandText = "UPDATE table SET memPhone = @memPhone WHERE uName='testname'";
command.Parameters.AddWithValue("@memPhone", payment_status);
connection.Open();
command.ExecuteNonQuery();
connection.Dispose();
}
当这个 sql 命令代码不存在时，IPN 处理程序和实现确实可以工作，但我显然需要它来更新数据库。
我已将此代码放入所有其他 if 分支（“Denied”、“In-Progress”、“Canceled_Reversal”）中，但它没有任何效果，所以我知道 IPN 正在查看正确的“Completed”分支而不是这些其他人。
是否有人知道发生这种情况的特定贝宝原因或在此处查看代码的任何问题？
顺便说一句，我知道我正在尝试将“已完成”传递给 memPhone（这是一个 varchar），这没有任何意义。我只是用它来测试 SQL 是否正常工作，因为两者都是字符串。
【问题讨论】：
-
当您调试代码
string connectionString = ConfigurationManager.ConnectionStrings["LocalSqlServer"].ToString();时，您会从该值得到什么，根据您所拥有的string connectionString = ConfigurationManager.ConnectionStrings["LocalSqlServer"].ConnectionString;，您不需要调用Dispose，因为它包含在里面的using(){}以及当您执行command.ExecuteNonQuery时您会得到什么，您基于代码假设这不会出错.. 将调用包装在try{}catch{}周围，告诉我们错误消息是什么（如果有） -
我的字符串 connectionString 是如何工作的，不是问题。我在其他每一页上都成功地做到了这一点。我通常确实有 try{} catch{} 但我把它拿出来是因为它可以防止错误，如果它不起作用，我希望它出错。我将删除 dispose。
-
那么你不需要 .ToString();最后.. 因为这一行将返回一个字符串
string connectionString = ConfigurationManager.ConnectionStrings["LocalSqlServer"] -
我确实需要 .ToString 因为 System.Configuration.ConnectionStringSettings 不是字符串，需要转换。如果删除它会报错。
-
这就是我建议在最后使用 .
ConnectionString的方法。无论哪种方式都不是问题。进行一些适当的错误处理，以便您可以报告当前问题。