Can anyone tell me whether the Constant Contact v2 API can be called from a WebLogic 11gR1 server? I am coding using Java 6.0. I've got code that deploys and runs if I use a GlassFish 5.0 or JBoss 7.1 server, but, unfortunately, we have to use WebLogic 11gR1 for at least the next several months. Deploying the same ear file in WebLogic fails to deploy with the error message "java.lang.NoClassDefFoundError: retrofit2/Callback".
Thank you for reaching out to the API Support team here at Constant Contact.
I don't know of any specific limitations using Constant Contact's API that would arise from using a WebLogic server. Though that error message would indicate that Retrofit2's class "callback" is not being found or that retrofit2 is not set as a dependency properly. I would recommend looking into how you are setting your Retrofit2 dependency and if it is being loaded correctly. It also may be that retrofit2 is not supported on a WebLogic server.