This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
i think you are getting proper result & just printing it on screen in an incorrect way. just add a toString() method to your POJO class returning the username (or something you can identify) from it. you can also add LoggingInInterceptor & LoggingOutInterceptor to see what is going out & what is coming back to the client.