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------解决方案--------------------
支付接口谁能给啊 比如要用支付宝接口，你就得去他公司申请的
------解决方案--------------------
1.到https://developer.paypal.com注册一个开发帐号，好了之后再进入Sandbox建立测试用的Paypal虚拟帐号（至少应该建立一个Business的和一个Personal的），信息可以是假的,注意:这里的至少两个测试帐号是在你所建立的开发帐号里面建立的,不要注册错了；
2.测试是很麻烦,但是是必不可少的,因为如果客户买过一次出错之后,就不会来第二次了,所以花半天时间做测试是很重要的；
3.代码帖出来给大家参考一下,我做的是不很细,支付成功后返回的结果我就没有做,因为我在测试的时候已经没有问题了,所以没有做,改天有空会完善的；
ASP.Net/C#
- C# code
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
}
}
}