Authenticate Spring Security 4 Java API with Azure Active Directory using Auth0

import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@Component
public class SecuredPingController {
  @RequestMapping(value = "/secured/ping")
  @ResponseBody
  public String securedPing() {
    return "All good. You only get this message if you're authenticated";
  }
}