No resource classes found on a cxf Servlet

Hello,

I have created a very simple cxf non-spring based Servlet which loads a javax.ws.rs.Application type.

Here is the web.xml:

<?xml version="1.0" encoding="UTF-8"?>

<web-app 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_2_5.xsd"
    version="2.5">

  <servlet>
        <servlet-name>CXFServlet</servlet-name>
        <servlet-class>
            org.apache.cxf.jaxrs.servlet.CXFNonSpringJaxrsServlet
        </servlet-class>
        <init-param>
            <param-name>javax.ws.rs.Application</param-name>
            <param-value>
                com.mycomp.cxf.TestApplication
            </param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>CXFServlet</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>

</web-app>

And here is the application:

public class TestApplication extends Application
{
    private final Set<Class<?>> classes = new HashSet<Class<?>>();
    private final Set<Object> singletons = new HashSet<Object>();

    public TestApplication() throws ServletException 
    {

    }

    @Override
    public Set<Class<?>> getClasses() 
    {
        return classes;
    }

    @Override
    public Set<Object> getSingletons() 
    {
        return singletons;
    }
}

The Servlet is failing to load due to: "No resource classes found" and i'm not sure why as it should be ok to have an empty set of classes in Application.

Here is the full stacktrace:

org.apache.cxf.jaxrs.AbstractJAXRSFactoryBean - No resource classes found org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/test] - StandardWrapper.Throwable org.apache.cxf.service.factory.ServiceConstructionException at org.apache.cxf.jaxrs.JAXRSServerFactoryBean.create(JAXRSServerFactoryBean.java:122) at org.apache.cxf.jaxrs.servlet.CXFNonSpringJaxrsServlet.createServerFromApplication(CXFNonSpringJaxrsServlet.java:304) at org.apache.cxf.jaxrs.servlet.CXFNonSpringJaxrsServlet.loadBus(CXFNonSpringJaxrsServlet.java:72) at org.apache.cxf.transport.servlet.AbstractCXFServlet.init(AbstractCXFServlet.java:78) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1172) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:992) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4058) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4371) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) at com.springsource.osgi.webcontainer.tomcat.TomcatServletContainer.startWebApplication(TomcatServletContainer.java:120) at com.springsource.osgi.webcontainer.internal.StandardWebContainer$StandardWebApplication.start(StandardWebContainer.java:100) at com.springsource.osgi.webcontainer.extender.WebContainerBundleCustomizer.addingBundle(WebContainerBundleCustomizer.java:25) at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:440) at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:261) at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:233) at org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:413) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:919) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:227) at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:149) at org.eclipse.osgi.framework.internal.core.Framework.publishBundleEventPrivileged(Framework.java:1349) at org.eclipse.osgi.framework.internal.core.Framework.publishBundleEvent(Framework.java:1300) at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:380) at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:284) at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:276) at com.sap.core.js.deployer.watchservice.WARDeployer.deploy(WARDeployer.java:142) at com.sap.core.js.deployer.watchservice.FileSystemEventsListener.onChange(FileSystemEventsListener.java:26) at com.springsource.util.io.FileSystemChecker.notifyListeners(FileSystemChecker.java:182) at com.springsource.util.io.FileSystemChecker.check(FileSystemChecker.java:145) at com.sap.core.js.deployer.watchservice.WatchTask.run(WatchTask.java:29) at java.lang.Thread.run(Thread.java:679) Caused by: javax.ws.rs.WebApplicationException at org.apache.cxf.jaxrs.AbstractJAXRSFactoryBean.checkResources(AbstractJAXRSFactoryBean.java:238) at org.apache.cxf.jaxrs.JAXRSServerFactoryBean.create(JAXRSServerFactoryBean.java:85) ... 31 more 10:41:54,580 [ERROR] org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/test] - Servlet /test threw load() exception javax.ws.rs.WebApplicationException at org.apache.cxf.jaxrs.AbstractJAXRSFactoryBean.checkResources(AbstractJAXRSFactoryBean.java:238) at org.apache.cxf.jaxrs.JAXRSServerFactoryBean.create(JAXRSServerFactoryBean.java:85) at org.apache.cxf.jaxrs.servlet.CXFNonSpringJaxrsServlet.createServerFromApplication(CXFNonSpringJaxrsServlet.java:304) at org.apache.cxf.jaxrs.servlet.CXFNonSpringJaxrsServlet.loadBus(CXFNonSpringJaxrsServlet.java:72) at org.apache.cxf.transport.servlet.AbstractCXFServlet.init(AbstractCXFServlet.java:78) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1172) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:992) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4058) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4371) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) at com.springsource.osgi.webcontainer.tomcat.TomcatServletContainer.startWebApplication(TomcatServletContainer.java:120) at com.springsource.osgi.webcontainer.internal.StandardWebContainer$StandardWebApplication.start(StandardWebContainer.java:100) at com.springsource.osgi.webcontainer.extender.WebContainerBundleCustomizer.addingBundle(WebContainerBundleCustomizer.java:25) at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:440) at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:261) at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:233) at org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:413) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:919) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:227) at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:149) at org.eclipse.osgi.framework.internal.core.Framework.publishBundleEventPrivileged(Framework.java:1349) at org.eclipse.osgi.framework.internal.core.Framework.publishBundleEvent(Framework.java:1300) at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:380) at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:284) at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:276) at com.sap.core.js.deployer.watchservice.WARDeployer.deploy(WARDeployer.java:142) at com.sap.core.js.deployer.watchservice.FileSystemEventsListener.onChange(FileSystemEventsListener.java:26) at com.springsource.util.io.FileSystemChecker.notifyListeners(FileSystemChecker.java:182) at com.springsource.util.io.FileSystemChecker.check(FileSystemChecker.java:145) at com.sap.core.js.deployer.watchservice.WatchTask.run(WatchTask.java:29) at java.lang.Thread.run(Thread.java:679)