Put The Simplest PayPal Button / "Website Payments Standard Integration Guide"?
Jan 12, 2010
I am completing a website on which a single object is sold. I want to put the simplest PayPal button. I created the code of the button using the instructions on pp19 to 21 of "Website Payments Standard Integration Guide".
The code that was created was :
<code>
<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_s-xclick">
<input type="hidden" name="hosted_button_id" value="123456789">
<input type="image" src="https://www.paypal.com/en_US/GB/i/btn/btn_buynowCC_LG.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online.">
<img alt="" border="0" src="https://www.paypal.com/en_GB/i/scr/pixel.gif" width="1" height="1">
</form>
</code>
(I have altered the value value just for this post)
The HTML of the payment page is :
<code>
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Page05.aspx.vb" Inherits="Page05" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Page05</title>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" /><link href="Eng05.css" type="text/css" rel="Stylesheet" />
</head>
<body>
<form id="Form5" method="post" runat="server">
<a id="ankera-p5"></a>
<div id="container">
<div id="inner_container">
<p>THE "ANY SMALL AD" WEB SITE</p>
<p>How to pay</p>
xxxxxxxx
<p><a href="Page11.aspx#ankera-p11" >Back to Services page</a></p>
<p><a href="Default.aspx#ankera-p1" >Back to home page</a></p>
<p></p>
</div> <!-- End of inner container -->
</div> <!-- End of container -->
</form>
</body>
</html>
</code>
I pasted in the button code where I have put "xxxxx", but it's all a mess and I can't seem to get the button to appear.
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I'm trying to get PayPal's ExpressCheckout working with Recurring Payments. I've got the first two stages (the calls to SetExpressCheckout and GetExpressCheckoutDetails) but CreateRecurringPaymentsProfile fails with the error below. I'm using a modified version of Paypal's sample code, but I suspect I'm (not) setting an encoder value. Anyone used this before? The error:
// TIMESTAMP: 2010-10-27T09:57:47Z
// CORRELATIONID: ad2b2da33c672
// ACK: Failure
// VERSION: 51.0
// BUILD: 1553277
// L_ERRORCODE0: 11502
// L_SHORTMESSAGE0: Invalid Token
// L_LONGMESSAGE0: The token is invalid
// L_SEVERITYCODE0: Error
The code I'm using is:
/// This returns true
public bool SetExpressCheckout(string amt, ref string token, ref string retMsg)
{
string host = "www.paypal.com";
if (bSandbox) {
pendpointurl = "https://api-3t.sandbox.paypal.com/nvp";
host = "www.sandbox.paypal.com";
}
string baseUrl = "http://" + HttpContext.Current.Request.Url.Authority;
string[] returnUrlParts = WebConfigurationManager.AppSettings["PaypalReturnUrl"].Split('?'),
cancelUrlParts = WebConfigurationManager.AppSettings["PaypalCancelUrl"].Split('?');
string returnURL = baseUrl + VirtualPathUtility.ToAbsolute(returnUrlParts[0]) + (returnUrlParts.Length > 1 ? '?' + returnUrlParts.Skip(1).Aggregate((itms, itm) => itms + itm) : string.Empty),
cancelURL = baseUrl + VirtualPathUtility.ToAbsolute(cancelUrlParts[0]) + (cancelUrlParts.Length > 1 ? '?' + cancelUrlParts.Skip(1).Aggregate((itms, itm) => itms + itm) : string.Empty);
NVPCodec encoder = new NVPCodec();
encoder["METHOD"] = "SetExpressCheckout";
encoder["RETURNURL"] = returnURL;
encoder["CANCELURL"] = cancelURL;
encoder["AMT"] = amt;
//encoder["PAYMENTACTION"] = "SALE";
encoder["CURRENCYCODE"] = "GBP";
encoder["NOSHIPPING"] = "1";
encoder["L_BILLINGTYPE0"] = "RecurringPayments";
encoder["L_BILLINGAGREEMENTDESCRIPTION0"] = "Subscription for MySite";
string pStrrequestforNvp = encoder.Encode();
string pStresponsenvp = HttpCall(pStrrequestforNvp);
NVPCodec decoder = new NVPCodec();
decoder.Decode(pStresponsenvp);
string strAck = decoder["ACK"].ToLower();
if (strAck != null && (strAck == "success" || strAck == "successwithwarning")) {
token = decoder["TOKEN"];
string ECURL = "https://" + host + "/cgi-bin/webscr?cmd=_express-checkout" + "&token=" + token;
retMsg = ECURL;
return true;
} else {
retMsg = "ErrorCode=" + decoder["L_ERRORCODE0"] + "&" +
"Desc=" + decoder["L_SHORTMESSAGE0"] + "&" +
"Desc2=" + decoder["L_LONGMESSAGE0"];
return false;
}
}
/// This returns true
public bool GetExpressCheckoutDetails(string token, ref string PayerId, ref string retMsg)
{
if (bSandbox) {
pendpointurl = "https://api-3t.sandbox.paypal.com/nvp";
}
NVPCodec encoder = new NVPCodec();
encoder["METHOD"] = "GetExpressCheckoutDetails";
encoder["TOKEN"] = token;
string pStrrequestforNvp = encoder.Encode();
string pStresponsenvp = HttpCall(pStrrequestforNvp);
NVPCodec decoder = new NVPCodec();
decoder.Decode(pStresponsenvp);
string strAck = decoder["ACK"].ToLower();
if (strAck != null && (strAck == "success" || strAck == "successwithwarning")) {
return true;
} else {
retMsg = "ErrorCode=" + decoder["L_ERRORCODE0"] + "&" +
"Desc=" + decoder["L_SHORTMESSAGE0"] + "&" +
"Desc2=" + decoder["L_LONGMESSAGE0"];
return false;
}
}
// This fails and returns false with the following in the decoder result
// TIMESTAMP: 2010-10-27T09:57:47Z
// CORRELATIONID: ad2b2da33c672
// ACK: Failure
// VERSION: 51.0
// BUILD: 1553277
// L_ERRORCODE0: 11502
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// L_LONGMESSAGE0: The token is invalid
// L_SEVERITYCODE0: Error
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{
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profile.APIUsername = this.APIUsername;
profile.APIPassword = this.APIPassword;
profile.APISignature = this.APISignature;
profile.Environment = "sandbox";
caller.APIProfile = profile;
string host = "www.paypal.com";
if (bSandbox) {
pendpointurl = "https://api-3t.sandbox.paypal.com/nvp";
host = "www.sandbox.paypal.com";
}
NVPCodec encoder = new NVPCodec();
encoder["VERSION"] = "51.0";
// Add request-specific fields to the request.
encoder["METHOD"] = "CreateRecurringPaymentsProfile";
encoder["TOKEN"] = token;
encoder["AMT"] = amount;
encoder["PROFILESTARTDATE"] = profileDate; //Date format from server expects Ex: 2006-9-6T0:0:0
encoder["BILLINGPERIOD"] = billingPeriod;
encoder["BILLINGFREQUENCY"] = billingFrequency;
encoder["L_BILLINGTYPE0"] = "RecurringPayments";
encoder["DESC"] = "Subscription for MySite";
// Execute the API operation and obtain the response.
string pStrrequestforNvp = encoder.Encode();
string pStresponsenvp = caller.Call(pStrrequestforNvp);
NVPCodec decoder = new NVPCodec();
decoder.Decode(pStresponsenvp);
//return decoder["ACK"];
string strAck = decoder["ACK"];
bool success = false;
if (strAck != null && (strAck == "Success" || strAck == "SuccessWithWarning")) {
success = true; // check decoder["result"]
} else {
success = false;
}
StringBuilder buffer = new StringBuilder();
for (int i = 0; i < decoder.Keys.Count; i++) {
buffer.AppendFormat("{0}: {1}", decoder.Keys[i], decoder.GetValues(i).Aggregate((vals, val) => vals + "----" + val));
}
retMsg = buffer.ToString();
return success;// returns false
}
If it helps, the code which is calling it is :
NVPAPICaller ppapi = new NVPAPICaller();
NVPCodec decoder = new NVPCodec();
string retMsg = string.Empty,
token = Convert.ToString(Session["token"]),
finalPaymentAmount = "15",
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payerId = Session["payerId"].ToString();
btnConfirm.Enabled = false;
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// but paymentSuccess is false
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Source Error:
[Code]....
Line 32: End If
Line 33: Catch ex As Exception
Line 34: Throw ex
Line 35:
Line 36: Finally
Source
File: D:whbSites29519Webexpresscheckout.aspx.vb Line: 34
Stack Trace:
[Code]....
[WebException: The operation has timed out]
expresscheckout.expresscheckout_Load(Object sender, EventArgs e) in D:whbSites29519Webexpresscheckout.aspx.vb:34
System.Web.UI.Control.OnLoad(EventArgs e) +99
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[Code]....
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[Code]....
[Code]....
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