Question

I cannot seem to inject a simple bean into my @WebService. With Spring on the classpath and javax.inject dependencies defined, I created a simple JAX-WS webservice with some underlying interface-driven DAOs etc:

@Named
@WebService(name = "NoteStorage", serviceName = "NoteStorageWS")
public class NoteStorageWS implements NoteStore {

    private static final Log l = LogFactory.getLog(NoteStorageWS.class);

    @Named("NoteDAO")
    @Inject
    private NoteDAO noteDAO;

    public NoteStorageWS() {
        super();
    }

    @Override
    @WebMethod
    public StorageState takeNote(String note) {
        try {
            l.info(format("Service received message: '%s'", note));

            Note n = new Note();
            n.setContent(note);
            noteDAO.store(n);

        } catch (Exception e) {
            l.error(e);
            return StorageState.FAILURE;
        }
        return StorageState.SUCCESS;
    }

    @WebMethod(exclude = true)
    public void setNoteDAO(NoteDAO noteDAO) {
        this.noteDAO = noteDAO;
    }
}

NoteDAOhas just implementation: FlatFileNoteDAO which is defined as follows:

@Named("NoteDAO")
public class FlatFileNoteDAO implements NoteDAO {

    private static final Log l = LogFactory.getLog(FlatFileNoteDAO.class);

    @Override
    public void store(Note n) {
        if (n == null) {
            throw new IllegalArgumentException("Note was null");
        }

        try {
            l.info(format("Storing note '%s'", n));
            FileWriter fileWriter = new FileWriter(new File("Note"));
            fileWriter.write(format("%s\n", n.getContent()));
            fileWriter.close();
        } catch (IOException e) {
            throw new DataAccessException(e);
        }

    }

}

My web.xml says:

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation=" http://java.sun.com/xml/ns/javaee
        http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
    </welcome-file-list>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/context.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <resource-env-ref>
        <description>Object factory for the CDI Bean Manager</description>
        <resource-env-ref-name>BeanManager</resource-env-ref-name>
        <resource-env-ref-type>javax.enterprise.inject.spi.BeanManager</resource-env-ref-type>
    </resource-env-ref>
</web-app>

I deploy the application to Glassfish by pointing it to the target/note-ws/ directory and execute the simple takeNote method via the ?Tester page.

Upon submission of the tester form I get a NullPointerException at the line noteDAO.store(n);, presumably because noteDAO wasn’t injected.

I can confirm that Spring has been invoked by the logs from glassfish on context initialisation (the Java EE context):

[#|2011-12-04T16:57:24.970+0000|INFO|glassfish3.1.1|org.springframework.context.annotation.ClassPathBeanDefinitionScanner|_ThreadID=256;_ThreadName=Thread-2;|JSR-330 'javax.inject.Named' annotation found and supported for component scanning|#]

    [#|2011-12-04T16:57:25.653+0000|INFO|glassfish3.1.1|org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor|_ThreadID=256;_ThreadName=Thread-2;|JSR-330 'javax.inject.Inject' annotation found and supported for autowiring|#]

    [#|2011-12-04T16:57:25.757+0000|INFO|glassfish3.1.1|org.springframework.beans.factory.support.DefaultListableBeanFactory|_ThreadID=256;_ThreadName=Thread-2;|Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@9e39146: defining beans [noteStorageWS,NoteDAO,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor]; root of factory hierarchy|#]

which says my beans are defined: noteStorageWS, NoteDAO and so-on.

Any ideas?

Edit
to clarify, I’m using Spring to provide JSR 330 — dependency injection — functionality.

Answer 1

I never got this solved, so I ended up removing the DI-features as the codebase was small and relied on manual dependency resolution – plain old new IFaceImpl(); for now.