发布：2016/12/20 0:39:20作者：管理员 来源：本站 浏览次数：1597
包括几个流行的网站开发环境的示范代码。尽管此代码已经过PayPal测试，但PayPal无法对其用途负责。
| ASP.Net/C# | Java/JSP |
| ASP.Net/VB | PERL |
| ASP/VBScript | PHP |
| ColdFusion |
ASP.Net/C#
using System;
using System.IO;
using System.Text;
using System.Net;
using System.Web;
public partial class csIPNexample :System.Web.UI.Page
{
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);
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
}
else if (strResponse == "INVALID")
{
// log for manual investigation
}
else
{
//log response/ipn data for manual investigation
}
}
}ASP.Net/VB
Imports System.Net
Imports System.IO
Partial Class vbIPNexample
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As
System.EventArgs) Handles Me.Load
'Post back to either sandbox or live
Dim strSandbox As String =
"https://www.sandbox.paypal.com/cgi-bin/webscr"
Dim strLive As String =
"https://www.paypal.com/cgi-bin/webscr"
Dim req As HttpWebRequest = CType(WebRequest.Create(strSandbox),
HttpWebRequest)
'Set values for the request back
req.Method = "POST"
req.ContentType = "application/x-www-form-urlencoded"
Dim Param() As Byte =
Request.BinaryRead(HttpContext.Current.Request.ContentLength)
Dim strRequest As String = Encoding.ASCII.GetString(Param)
strRequest = strRequest +
"&cmd=_notify-validate"
req.ContentLength = strRequest.Length
'for proxy
'Dim proxy As New WebProxy(New
System.Uri("http://url:port#"))
'req.Proxy = proxy
'Send the request to PayPal and get the response
Dim streamOut As StreamWriter = New
StreamWriter(req.GetRequestStream(), Encoding.ASCII)
streamOut.Write(strRequest)
streamOut.Close()
Dim streamIn As StreamReader = New
StreamReader(req.GetResponse().GetResponseStream())
Dim strResponse As String = streamIn.ReadToEnd()
streamIn.Close()
If strResponse = "VERIFIED" Then
'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
'处理付款
ElseIf strResponse = "INVALID" Then
'log for manual investigation
Else
'Response wasn't VERIFIED or INVALID, log for manual
investigation
End If
End Sub
End Class
ASP/VBScript
(requires MSXML)<%@LANGUAGE="VBScript"%>
<%
Dim Item_name, Item_number, Payment_status, Payment_amount
Dim Txn_id, Receiver_email, Payer_email
Dim objHttp, str
' read post from PayPal system and add 'cmd'
str = Request.Form &
"&cmd=_notify-validate"
' post back to PayPal system to validate
set objHttp = Server.CreateObject("Msxml2.ServerXMLHTTP")
' set objHttp =
Server.CreateObject("Msxml2.ServerXMLHTTP.4.0")
' set objHttp = Server.CreateObject("Microsoft.XMLHTTP")
objHttp.open "POST", "https://www.paypal.com/cgi-bin/webscr",
false
objHttp.setRequestHeader "Content-type",
"application/x-www-form-urlencoded"
objHttp.Send str
' assign posted variables to local variables
Item_name = Request.Form("item_name")
Item_number = Request.Form("item_number")
Payment_status = Request.Form("payment_status")
Payment_amount = Request.Form("mc_gross")
Payment_currency = Request.Form("mc_currency")
Txn_id = Request.Form("txn_id")
Receiver_email = Request.Form("receiver_email")
Payer_email = Request.Form("payer_email")
' Check notification validation
if (objHttp.status <> 200 )
then
' HTTP error handling
elseif (objHttp.responseText = "VERIFIED") then
' check that Payment_status=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
elseif (objHttp.responseText = "INVALID") then
' log for manual investigation
else
' error
end if
set objHttp = nothing
%>ColdFusion
<!-- read post from PayPal system and add 'cmd'
-->
<CFSET
str="cmd=_notify-validate">
<CFLOOP INDEX="TheField"
list="#Form.FieldNames#">
<CFSET str = str &
"&#LCase(TheField)#=#URLEncodedFormat(Form[TheField])#">
</CFLOOP>
<CFIF
IsDefined("FORM.payment_date")>
<CFSET str = str &
"&payment_date=#URLEncodedFormat(Form.payment_date)#">
</CFIF>
<CFIF
IsDefined("FORM.subscr_date")>
<CFSET str = str &
"&subscr_date=#URLEncodedFormat(Form.subscr_date)#">
</CFIF>
<CFIF
IsDefined("FORM.auction_closing_date")>
<CFSET str = str &
"&subscr_date=#URLEncodedFormat(Form.auction_closing_date)#">
</CFIF>
<!-- post back to PayPal system to validate
-->
<CFHTTP
URL="https://www.paypal.com/cgi-bin/webscr?#str#" METHOD="GET"
RESOLVEURL="false">
</CFHTTP>
<!-- assign posted variables to local variables
-->
<CFSET
item_name=FORM.item_name>
<CFSET
payment_status=FORM.payment_status>
<CFSET
payment_amount=FORM.mc_gross>
<CFSET
payment_currency=FORM.mc_currency>
<CFSET txn_id=FORM.txn_id>
<CFSET
receiver_email=FORM.receiver_email>
<CFSET
payer_email=FORM.payer_email>
<CFIF
IsDefined("FORM.item_number")>
<CFSET
item_number=FORM.item_number>
</CFIF>
<!-- check notification validation
-->
<CFIF #CFHTTP.FileContent# is
"VERIFIED">
<!-- check that payment_status=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 -->
<CFELSEIF #CFHTTP.FileContent# is
"INVALID">
<!-- log for investigation -->
<CFELSE>
<!-- error -->
</CFIF>Java/JSP
<%@ page import="java.util.*"
%>
<%@ page import="java.net.*" %>
<%@ page import="java.io.*" %>
<%
// read post from PayPal system and add 'cmd'
Enumeration en = request.getParameterNames();
String str = "cmd=_notify-validate";
while(en.hasMoreElements()){
String paramName = (String)en.nextElement();
String paramValue = request.getParameter(paramName);
str = str + "&" + paramName + "=" +
URLEncoder.encode(paramValue);
}
// post back to PayPal system to validate
// NOTE: change http: to https: in the following URL to verify
using SSL (for increased security).
// using HTTPS requires either Java 1.4 or greater, or Java Secure
Socket Extension (JSSE)
// and configured for older versions.
URL u = new URL("https://www.paypal.com/cgi-bin/webscr");
URLConnection uc = u.openConnection();
uc.setDoOutput(true);
uc.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
PrintWriter pw = new PrintWriter(uc.getOutputStream());
pw.println(str);
pw.close();
BufferedReader in = new BufferedReader(
new InputStreamReader(uc.getInputStream()));
String res = in.readLine();
in.close();
// assign posted variables to local variables
String itemName = request.getParameter("item_name");
String itemNumber = request.getParameter("item_number");
String paymentStatus =
request.getParameter("payment_status");
String paymentAmount = request.getParameter("mc_gross");
String paymentCurrency = request.getParameter("mc_currency");
String txnId = request.getParameter("txn_id");
String receiverEmail =
request.getParameter("receiver_email");
String payerEmail = request.getParameter("payer_email");
check notification validation
if(res.equals("VERIFIED")) {
// check that paymentStatus=Completed
// check that txnId has not been previously processed
// check that receiverEmail is your Primary PayPal email
// check that paymentAmount/paymentCurrency are correct
// process payment
}
else if(res.equals("INVALID")) {
// log for investigation
}
else {
// error
}
%>PERL
(requires LWP::UserAgent)
#!/usr/bin/perl
# read post from PayPal system and add 'cmd'
read (STDIN, $query, $ENV{'CONTENT_LENGTH'});
$query .= '&cmd=_notify-validate';
# post back to PayPal system to validate
use LWP::UserAgent;
$ua = new LWP::UserAgent;
$req = new HTTP::Request
'POST','https://www.paypal.com/cgi-bin/webscr';
$req->content_type('application/x-www-form-urlencoded');
$req->content($query);
$res = $ua->request($req);
# split posted variables into pairs
@pairs = split(/&/, $query);
$count = 0;
foreach $pair (@pairs) {
($name, $value) = split(/=/, $pair);
$value =~ tr/+/ /;
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
$variable{$name} = $value;
$count++;
}
# assign posted variables to local variables
$item_name = $variable{'item_name'};
$item_number = $variable{'item_number'};
$payment_status = $variable{'payment_status'};
$payment_amount = $variable{'mc_gross'};
$payment_currency = $variable{'mc_currency'};
$txn_id = $variable{'txn_id'};
$receiver_email = $variable{'receiver_email'};
$payer_email = $variable{'payer_email'};
if ($res->is_error) {
# HTTP error
}
elsif ($res->content eq 'VERIFIED') {
# check the $payment_status=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
}
elsif ($res->content eq 'INVALID') {
# log for manual investigation
}
else {
# error
}
print "content-type: text/plain\n\n";PHP 4.1
// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-validate';
foreach ($_POST as $key => $value) {
$value = urlencode(stripslashes($value));
$req .= "&$key=$value";
}
// post back to PayPal system to validate
$header .= "POST /cgi-bin/webscr HTTP/1.0\r\n";
$header .= "Content-Type:
application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
$fp = fsockopen ('ssl://www.paypal.com', 443, $errno, $errstr,
30);
// assign posted variables to local variables
$item_name = $_POST['item_name'];
$item_number = $_POST['item_number'];
$payment_status = $_POST['payment_status'];
$payment_amount = $_POST['mc_gross'];
$payment_currency = $_POST['mc_currency'];
$txn_id = $_POST['txn_id'];
$receiver_email = $_POST['receiver_email'];
$payer_email = $_POST['payer_email'];
if (!$fp) {
// HTTP ERROR
else {
fputs ($fp, $header . $req);
while (!feof($fp)) {
$res = fgets ($fp, 1024);
if (strcmp ($res, "VERIFIED") == 0) {
// check the payment_status is Completed
// check that txn_id has not been previously processed
// check that receiver_email is your Primary PayPal email
// check that payment_amount/payment_currency are correct
// process payment
}
else if (strcmp ($res, "INVALID") == 0) {
// log for manual investigation
}
}
fclose ($fp);
}
?>
https://cms.paypal.com/cgi-bin/marketingweb?cmd=_render-content&content_ID=developer/library_code_ipn_code_samples
