Business Logic & Braintree integration - NoClassDefFoundError

Server Code
1

Hello,
I’m experimenting with adding a Braintree integration into the Business Logic. So I wrote a simple ApiService:

public class PaymentService implements IBackendlessService {
 
 public String getClientToken() {
 BraintreeGateway gateway = new BraintreeGateway(
 Environment.SANDBOX,
 "<merchantId>",
 "<publicKey>",
 "<privateKey>"
 );
 return gateway.clientToken().generate();
 }
 public String getTestException() {
 return new BraintreeException("Exception").getMessage();
 }
}

Creating service from uploaded .jar file went without any errors.
However executing GET /ClientToken returns an error:
400 - Type:“java.lang.NoClassDefFoundError”, Description:“Could not initialize class sun.security.ssl.SSLContextImpl$DefaultSSLContext”, ExceptionClass:“ServiceException” {Msg:“none”, Cause:“none”}
Executing GET /TestException works fine.
I’ve tried this service in both - Backendles v3 and v4 - non of them worked.
Can you please suggest what can I do to fix this issue? Is this because there can be some network requests to Braintree API?
Regards,
Matt

2

Hi Matt,

The calls in 3.x and 4.0 fail for different reasons.

In 3.x you need to add the host which the library communicates with per the instructions at:
https://backendless.com/documentation/business-logic/java/bl_external_hosts.htm

In 4.0 there is currently a problem related to SSL initialization with CodeRunners running on our servers (it should work in the debug mode though).

Regards,
Mark