Webservice not exposed in Weblogic10.3.3

I have created simple CXF Webservice using Java1.6, CXF2.2.7 and deploying in Weblogic10.3.3. While doing this facing lot of problems finally struck up in one exception.

First deployed as a war file with `weblogic.xml` having entries like,

<prefer-application-packages>
    <package-name>javax.xml.ws.*</package-name>
    <package-name>com.sun.xml.ws</package-name>
 </prefer-application-packages>

got below exception,

Caused By: java.lang.NoClassDefFoundError: Could not initialize class weblogic.wsee.jaxws.spi.WLSProvider

After that wrapped up into ear file with Weblogic.xml having entries like <prefer-web-inf-classes>true</prefer-web-inf-classes> and weblogic-application.xml having entries like

<prefer-application-packages>
    <package-name>javax.jws.*</package-name>
    <package-name>javax.xml.ws.*</package-name>
    <package-name>com.sun.xml.ws</package-name>
</prefer-application-packages>

While deploying like this there is no exception, Webservice is listing but not exposed in `Deployement->Testing` in weblogic console, i.e, WSDL is not loading. In comment getting message like `This Web Service is not currently available.` Same war file deployed and working fine in JBoss4.2 and Tomcat7.What is missing ?? or what need to be done to make it work with Weblogic10.3.3 ???

Thank You.