SpringBeanAutowiringSupport in developing POJO endpoints using SimpleJaxWsServiceExporter does not seem to work

Solution Unverified - Updated -

Environment

  • JBoss Enterprise Application Platform (EAP)
    • 5.x
    • 6.0.0
    • 6.0.1
  • JBossWS-CXF

Issue

  • Deployed a @WebService-annotated class to JBoss EAP 5.x, and configured a dependency injection in the endpoint classes.
  • To achieve and check proper injection that is performed, configured the SpringBeanAutoWiringSupport, but that does not seem to work.
  • Used Spring's SimpleJaxWsServiceExporter to publish the endpoints.
  • Invoking the underlying service with the client code results in NullPointerException on the Object(s) that are injected with the @Autowired annotation.

  • The sample application code looks like the following,

  • Service Interface:

package ws;
import org.springframework.stereotype.Service;

@Service("greetingService")
public interface GreetingService {
    public String sayHello();
}
  • Service Bean
package ws;
import org.springframework.stereotype.Component;

@Component
public class Greetings {

    public String getGreeting() {
        return "Welcome to MedCloudDataStore!!!";
    }
}
  • Service Endpoint
package ws;

import javax.jws.WebMethod;
import javax.jws.WebService;

import org.springframework.web.context.support.SpringBeanAutowiringSupport;

@WebService(serviceName = "GreetingService")
public class GreetingServiceEndpoint extends SpringBeanAutowiringSupport implements GreetingService {

    @Autowired
    private Greetings greetings;

    @WebMethod
    public String sayHello() {
        return greetings.getGreeting();
    }
}

Resolution

Disable your SimpleJaxWsServiceExporter and add the following code to your endpoint class(es):

import javax.annotation.PostConstruct;
import org.springframework.web.context.support.SpringBeanAutowiringSupport;

@PostConstruct
public void init() {
  SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);
}

Root Cause

The SimpleJaxWsServiceExporter does not work as it expects in JBoss EAP. This class uses javax.xml.ws.Endpoint.publish() to create its endpoints, but this is not intended to be used inside an EE container; it should only be used in standalone environments. The recommended method of deploying endpoints is to allow JBossWS deploy the endpoints.

What is really going on is that JBossWS is deploying the endpoint, and SimpleJaxWsServiceExporter is failing silently. The error messages will likely be revealed in the logs if you add the system property -Dorg.jboss.as.logging.per-deployment=false. The NullPointerException is coming from the endpoint initialized by JBossWS, thus Spring's injection does not take place.

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