there is a problem that "a java.lang.NullPointerException" always happen 
when i used spring-dm in my webApp project. unless deleted the code 

        
       contextClass                                                             
           
      
org.springframework.osgi.web.context.support.OsgiBundleXmlWebApplicationContext 
  
        
     
        
                org.springframework.web.context.ContextLoaderListener           
            
        

in my web.xml..

who can help me....
i have spent three day...



exception
Could not start the servlet context for http context
[org.ops4j.pax.web.extender.war.internal.WebAppWebContainerContext@cb5d35]
java.lang.NullPointerException
at
org.ops4j.pax.web.service.jetty.internal.JettyServerWrapper.addContext(JettyServerWrapper.java:209)[86:org.ops4j.pax.web.pax-web-jetty:1.0.1]
        at
org.ops4j.pax.web.service.jetty.internal.JettyServerWrapper.getOrCreateContext(JettyServerWrapper.java:112)[86:org.ops4j.pax.web.pax-web-jetty:1.0.1]
        at
org.ops4j.pax.web.service.jetty.internal.JettyServerImpl.addServlet(JettyServerImpl.java:137)[86:org.ops4j.pax.web.pax-web-jetty:1.0.1]
        at
org.ops4j.pax.web.service.jetty.internal.ServerControllerImpl$Started.addServlet(ServerControllerImpl.java:266)[86:org.ops4j.pax.web.pax-web-jetty:1.0.1]
        at
org.ops4j.pax.web.service.jetty.internal.ServerControllerImpl.addServlet(ServerControllerImpl.java:107)[86:org.ops4j.pax.web.pax-web-jetty:1.0.1]
        at
org.ops4j.pax.web.service.internal.HttpServiceStarted.registerResources(HttpServiceStarted.java:180)[85:org.ops4j.pax.web.pax-web-runtime:1.0.1]
        at
org.ops4j.pax.web.service.internal.HttpServiceProxy.registerResources(HttpServiceProxy.java:66)[85:org.ops4j.pax.web.pax-web-runtime:1.0.1]
        at
org.ops4j.pax.web.extender.war.internal.RegisterWebAppVisitorWC.visit(RegisterWebAppVisitorWC.java:138)[89:org.ops4j.pax.web.pax-web-extender-war:1.0.1]
        at
org.ops4j.pax.web.extender.war.internal.model.WebApp.accept(WebApp.java:558)[89:org.ops4j.pax.web.pax-web-extender-war:1.0.1]
        at
org.ops4j.pax.web.extender.war.internal.WebAppPublisher$HttpServiceListener.register(WebAppPublisher.java:170)[89:org.ops4j.pax.web.pax-web-extender-war:1.0.1]






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