Java web application Paypal IPN

Question

I created my own website with Java Servlet and JSP.

I integrated Paypal payments with the normal buttons. I want to do some actions on a database when a user completes the payment.

I think I have to create the IPN listener servlet , but I can't find anything useful.

Answer 1

I solved my problem. I created a servlet IPN using an example for a maven project. ( https://github.com/paypal/merchant-sdk-java ) Simply I added this dependency:

    <dependency>
        <groupId>com.paypal.sdk</groupId>
        <artifactId>paypal-core</artifactId>
        <version>1.7.0</version>
    </dependency>

And then I created the servlet ipn with this code in doPost

    Map<String,String> configMap = new HashMap<String,String>();
    configMap.put("mode", "sandbox");
    IPNMessage ipnlistener = new IPNMessage(request,configMap);

    boolean isIpnVerified = ipnlistener.validate();
    String transactionType = ipnlistener.getTransactionType();
    Map<String,String> map = ipnlistener.getIpnMap();