沙盒重定向会破坏会话
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【中文标题】沙盒重定向会破坏会话【英文标题】：sand box redirection destroys sessions 【发布时间】：2012-12-15 01:46:19 【问题描述】：为什么当我从我的本地主机将用户重定向到 PAYPAL 的沙箱 (https://www.sandbox.paypal.com) 然后在返回到 .aspx 页面 (successful.aspx) 后会丢失会话，
例如SESSION [“tempUser”]，它适用于everypage但不适用于Successful.aspx页面，它返回null，我正在处理这个错误2周，但没有进展， 我尝试了不同的浏览器，甚至不同的系统，稍微更改了代码，但没有任何帮助，已经 1 个月以上，在几个表单上发布了几篇帖子后，没有任何帮助，即使 cookie 有同样的问题，返回时为空，我之前的帖子。
重定向页面代码：
<body>
<form id="form1" runat="server">
<div>
<h4> Congrats <b> <%# Session["tempSubAdminName"]%> </b>, Your basic informaton has been submitted , For full activation you need to pay via paypal. Please click the PayPal icon given below. </h4>
</div>
<div>
<asp:HyperLink ID="homeBtnImage" runat="server" ImageUrl="~/btnPayPal.gif"
NavigateUrl= "https://www.sandbox.paypal.com/us/cgi-bin/webscr?cmd=_xclick&business=smile2_1355775057_biz@yahoo.com&item_name=MemberShip&amount=20¤cy=USD&return=http://127.0.0.1:57135/Online%20Recruitment%20System-Final/paymentSuccessful.aspx?emailAdmin='1234' &cancel_return=https://www.google.com/" >PayPal</asp:HyperLink>
</div>
<h6>Or if you don't have paypal account, click <asp:HyperLink ID="paypalSite" runat="server"
NavigateUrl="https://www.sandbox.paypal.com/" >here</asp:HyperLink> </h6>
</form>
如果成功返回这个年龄
</head>
<body>
<form id="form1" runat="server">
<div>
<h5> Dear <%# Session["tempSubAdmin"] %>, You have successfully registered , Please wait for the approval by admin. </h5>
</div>
</form>
【问题讨论】：
Session["tempSubAdmin"] 是否应该与 Session["tempSubAdminName"] 相同？ 底线是我尝试时会话丢失了 你能分享你的代码吗？ 如何重定向以及如何返回？ 使用这行我做重定向我认为您正在本地机器上进行测试。
在重定向之前检查 cookie ASP.NET_SessionId 的值。
然后在successful.aspx调用后查看值。
如果 cookie 丢失：Paypal 无法对您的 cookie 做任何事情。只能在同一个域（本地主机）上更改。
我会在没有贝宝的情况下对此进行测试：只需一个简单的页面即可重定向到您的successful.aspx。如果 cookie 丢失，您可能配置了非常短的 Session Timeout 或运行了一些删除 cookie 的代码（检查 global.asax）
【讨论】：
【参考方案2】：我正在解释我实施的方式。可能因人而异。
-
首先您必须在developer paypal api 上创建一个帐户。帐户。
然后创建两个测试帐户，一个用于客户，另一个用于企业（商家）。
在 web.config 文件中声明这些值。
<appSettings>
<!--these keys are for Paypal-->
<add key="paypalURL" value="https://www.sandbox.paypal.com" />
<add key="paypalAccount" value="arshad_Mer_biz@gmail.com" />
<add key="websiteUrl" value="http://www.yourstie.com" />
</appSettings>
现在你必须相应地设置paypal html变量，详情Paypal variables
在 button_click 事件中编写以下代码
string redirectUrl = ConfigurationManager.AppSettings["paypalURL"]+"/cgi-bin/webscr?cmd=_xclick";
string sellersEmail = "&business=";
string buyersEmail = "&email=";
string productName = "&item_name=";
string amount = "&amount=";
string shippingOption = "&no_shipping=";
string noteOpton = "&no_note=";
string returnUrl = "&return=";
string cancelUrl = "&cancel_return=";
string rmOption = "&rm=";
string notifyUrl = "¬ify_url=";
string custom = "&custom=";
// Merchant account
sellersEmail += ConfigurationManager.AppSettings["paypalAccount"];
//calling a method that will return current user email id.
buyersEmail += GeneralClass.GetUserEmail();
//optional value if you want to carry
custom += GeneralClass.GetUseriD();
productName += lblProdeutName.Text;
amount +=lblAmount.Text ;
shippingOption += "1"; //1 means no shipping option;
noteOpton += "1"; //1 means no note option;
rmOption += "1";
returnUrl +=ConfigurationManager.AppSettings["websiteUrl"]+"/PaypalThankYou.aspx";
cancelUrl +=ConfigurationManager.AppSettings["websiteUrl"] + "/PaypalCancel.aspx";
notifyUrl += ConfigurationManager.AppSettings["websiteUrl"] + "/PaypalNotifyUrl.aspx";
redirectUrl += sellersEmail + buyersEmail + productName + amount + shippingOption + noteOpton + returnUrl + cancelUrl + notifyUrl + rmOption + custom;
Response.Redirect(redirectUrl);
取消页面：- 如果用户从 paypal 取消交易。它也适用于本地主机。 感谢页面：付款后，paypal会跳转到页面。 通知网址：有时称为 IPN（即时付款通知）。这是您将从贝宝获得价值的地方。它仅适用于托管页面。 它在本地主机上不起作用
Notifyurl 页面的代码
添加这些namespaces:
using System.Net;
using System.IO;
using System.Text;
using System.Collections.Specialized;
在page_load:
protected void Page_Load(object sender, EventArgs e)
if (!IsPostBack)
//Post back to either sandbox or live
string strURL =ConfigurationManager.AppSettings["paypalURL"]+ "/cgi-bin/webscr";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(strURL);
//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 strResponse_copy = strRequest; //Save a copy of the initial info sent by PayPal
strRequest += "&cmd=_notify-validate";
req.ContentLength = strRequest.Length;
//for proxy
//WebProxy proxy = new WebProxy(new Uri("http://url:port#"));
//req.Proxy = proxy;
//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();
if (strResponse == "VERIFIED")
//check the payment_status is Completed
//check that txn_id has not been previously processed
//check that receiver_email is your Primary PayPal email
//check that payment_amount/payment_currency are correct
//process payment
// pull the values passed on the initial message from PayPal
NameValueCollection these_argies = HttpUtility.ParseQueryString(strResponse_copy);
string pay_stat = these_argies["payment_status"];
//.
//. more args as needed look at the list from paypal IPN doc
//.
if (pay_stat.Equals("Completed"))
//inserting the database
int intUserID;
int.TryParse(these_argies["custom"],out intUserID);
objUserEntity.UserID=intUserID;
objPapalPayment.strTransactionID = these_argies["txn_id"];
objPapalPayment.dblPaymentAmount = Convert.ToDouble(these_argies["payment_gross"]);
objPapalPayment.strBuyerMail = these_argies["payer_email"];
objPapalPayment.dtmDateAppliedOn = DateTime.Now;
objPapalPayment.blnIsGlobalAdvertisement = true;
objSubscription.blnIsPaid = false;
objSubscription.blnSubscriptionWithHeld = true;
objUserFunction.AddPaypalPayment(objUserEntity, objPapalPayment, objSubscription, enmSubscriptionType.Global);
// more checks needed here specially your account number and related stuff
else if (strResponse == "INVALID")
//log for manual investigation
else
//log response/ipn data for manual investigation
那你将如何在 localhost 上调试呢？ 使用rm value =2;并将相同的代码粘贴到感谢页面的 page_load 事件中。它会起作用的。
更多详情： http://www.codeproject.com/Articles/42894/Introduction-to-PayPal-for-C-ASP-NET-developersPaypal variables and its usage 希望对你有帮助。
【讨论】：
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