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POPaypal IPN Spring MVC - Java
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  1. POPaypal IPN Spring MVC - Java
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    copied!<p>My notify url is not working even it is already activated in paypal. Is there something wrong with my code in the form? i have the same notify url in paypal account. By the way, I'm using heroku,spring mvc. Thanks. I hope you can help me.</p> <pre><code>&lt;form method="post" action="https://www.sandbox.paypal.com/cgi-bin/webscr"&gt; &lt;input type="hidden" name="cmd" value="_donations"/&gt; &lt;input type="hidden" name="business" value="1234businessaccount@gmail.com"/&gt; &lt;input type="hidden" name="item_name" value="${student.lastname }, ${student.firstname}"/&gt; &lt;input type="hidden" name="currency_code" value="PHP"/&gt; &lt;input type="hidden" name="lc" value="PH"/&gt; &lt;input type="hidden" name="rm" value="2"/&gt; &lt;input type="hidden" name="return" value="http://atriev.herokuapp.com/"/&gt; &lt;input type="hidden" name="cancel_return" value="http://atriev.herokuapp.com/atriev-index.html"/&gt; &lt;input type="hidden" name="notify_url" value="http://atriev.herokuapp.com/paypal.html"/&gt; </code></pre> <p>paypal.jsp</p> <pre><code>&lt;%@ page import="java.util.*" %&gt; &lt;%@ page import="java.net.*" %&gt; &lt;%@ page import="java.io.*" %&gt; &lt;% // 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 + "&amp;" + 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.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(); // 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"); 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 } %&gt; </code></pre>
 

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