贝宝沙盒IPN返回无效 [英] Paypal sandbox IPN return INVALID

问题描述

我正在尝试使用servlet进行IPN回调.我使用的代码由paypal提供，用于验证ipn数据.但是每次我收到 INVALID 答复.

I am trying IPN callback, using servlet. The code I am using is provided by paypal for verifying the ipn data. But every time i getting a INVALID response.

这是代码:

Enumeration en = req.getParameterNames();
String str = "cmd=_notify-validate";

    while (en.hasMoreElements()) {        
        String paramName = (String) en.nextElement();
        String paramValue = req.getParameter(paramName);

//str = str + "&" + paramName + "=" + URLEncoder.encode(paramValue,"UTF-8"); // for UTF-8 i set the encode format in my account as UTF-8
//str = str + "&" + paramName + "=" + URLEncoder.encode(paramValue,"ISO-8859-1");// for ISO-8859-1 i set the encode format in my account as ISO-8859-1
str = str + "&" + paramName + "=" + URLEncoder.encode(paramValue); //default as provided by paypal

    }
    URL u = new URL("http://www.sandbox.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();

    if (res.equals("VERIFIED") || !res.equals("VERIFIED")) {
        //Update database...
    } else if (res.equals("INVALID")) {      
       //INVALID   
    }

我已经检查了贝宝提供的所有三种可能性，以防贝宝返回无效，如下所示:

I have checked all three possibilities provided by paypal in case paypal return INVALID as follow:

1)缺少参数-当我发送所有参数时，没有出现缺少参数的问题

1) Missing Parameters - As I am send all the parameters no issue of missing parameters

2)无效的URL. -我使用沙箱，因此网址为: http://www.sandbox.paypal.com /cgi-bin/webscr

2) Invalid URL. - I am using sandbox so URL is : http://www.sandbox.paypal.com/cgi-bin/webscr

3)字符编码. -尝试使用与Paypal帐户设置参数编码相同的字符编码.

3) Character encoding. - Tried with character encoding same as paypal account setting parameter encoding.

我使用以下参数发回贝宝的请求:

the request I am sending back to paypal using following parameters:

cmd = _notify-validate& last_name = User& test_ipn = 1& address_name = Test + User& txn_type = web_accept& receiver_email = sellr1_1252495907_biz％40gmail.com& residence_country = US& s_amp; s&date; city&date; = = 01％3A55％3A04 + Sep + 26％2C + 2009 + PDT& address_zip = 95131& payment_status =已完成&address_street = 1 + Main + St& first_name = Test& payer_email = buyer1_1252495751_per％40gmail.com& E-payion_idligibility = BXBKS22JQCUWL和放大器; verify_sign = AOMkeg7ofCL7FJfioyWA19uCxD4XAgZirsjiGh8cUy1fd2YAqBwOkkst和放大器; payment_type =即时和放大器;商业= sellr1_1252495907_biz％40gmail.com和放大器; address_country_code = US&放大器; mc_fee = 0.64安培; address_status =确认和放大器; transaction_subject =真+向上和数量= 1&安培; notify_version = 2.8安培; mc_currency = EUR&放; custom =& address_state = CA& pay_fee =& handling_amount = 0.00& payer_status = verified& shipping = 0.00& item_name = True + Up& tax = 0.00&用户名= hannonj& charset = windows-125 2& item_number = 567& mc_gross = 10.00& txn_id = 7F456350BS7942738& receiver_id = MASSU6BSR9SC2& address_country =美国+州

cmd=_notify-validate&last_name=User&test_ipn=1&address_name=Test+User&txn_type=web_accept&receiver_email=sellr1_1252495907_biz%40gmail.com&residence_country=US&address_city=San+Jose&payment_gross=&payment_date=01%3A55%3A04+Sep+26%2C+2009+PDT&address_zip=95131&payment_status=Completed&address_street=1+Main+St&first_name=Test&payer_email=buyer1_1252495751_per%40gmail.com&protection_eligibility=Eligible&payer_id=BXBKS22JQCUWL&verify_sign=AOMkeg7ofCL7FJfioyWA19uCxD4XAgZirsjiGh8cUy1fd2YAqBwOkkst&payment_type=instant&business=sellr1_1252495907_biz%40gmail.com&address_country_code=US&mc_fee=0.64&address_status=confirmed&transaction_subject=True+Up&quantity=1&notify_version=2.8&mc_currency=EUR&custom=&address_state=CA&payment_fee=&handling_amount=0.00&payer_status=verified&shipping=0.00&item_name=True+Up&tax=0.00&username=hannonj&charset=windows-1252&item_number=567&mc_gross=10.00&txn_id=7F456350BS7942738&receiver_id=MASSU6BSR9SC2&address_country=United+States

请，有人可以指引我去正确的方向吗?我没有得到错误的代码或URL或其他任何信息.我尝试了所有可能性.请帮助我.

Please , can any one direct me to proper direction? I am not getting what is wrong the code or the URL or anything else. I tried all the possibilities. Please help me.

推荐答案

感谢您的答复. 哦，我终于解决了.

Thank you guys for your reply. ohhh I solved it at last.

实际上，在通知URL中，我还添加了一个username参数. Paypal希望IPN的参数值与返回到servlet相同(您可以通过req.getParameterNames()获得它).因为我有多余的用户名参数，贝宝不知道.贝宝(Paypal)返回无效".

Actually in notify URL I also added a username parameter. Paypal want the parameter values for IPN same as it return to the servlet.(You can get it as req.getParameterNames()). As I have username parameter extra, which is not known to paypal. Paypal was returning INVALID.

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