1 2 Previous Next 17 Replies Latest reply: Apr 18, 2012 4:39 AM by Steve Hostettler RSS

    Producer Method and java.io.NotSerializableException

    Steve Hostettler Newbie

      Hello,

       

      There is something that I can really understand in my project. I get a java.io.NotSerializableException exception when Tomcat shuts down.

       

       

      WARNING: Cannot serialize session attribute org.jboss.weld.context.ConversationContext.1#org.jboss.weld.bean-flat-ManagedBean-class ch.demo.web.ManageStudentRegistration for session 91DA3D803BD3BC86DCF7C5FF6BF6F942
      java.io.NotSerializableException: java.util.logging.Logger
                at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1164)
                at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
                at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:{1483)
      

       

       

      My managed bean has a logger field which is transient:

       

       

      @Named
      @ConversationScoped
      public class ManageStudentRegistration implements Serializable {
      
       private static final long serialVersionUID = 2123342218792192804L; 
       @Inject
       private transient Logger mLogger;
      ...
      

       

       

       

      The producer for the logger looks like:

       

       

      public class LoggerProducer  implements Serializable {
      
          private static final long serialVersionUID = -7352371086416154400L;
      
          @Produces
          public Logger getLogger(final InjectionPoint injectionPoint) {
              return LoggerFactory.getLogger(injectionPoint.getBean().getBeanClass());
          }
      
      }
      

       

       

       

      I do not understand what field it tries to serializable as the mLogger is transient.

       

      In debug mode I get the following output from ObjectOutputStream.writeObject:

       

      Bean: Producer Method [Logger] with qualifiers [@Any @Default] declared as [[method] @Produces public ch.demo.helpers.LoggerProducer.getLogger(InjectionPoint)]; Instance: org.slf4j.impl.JDK14LoggerAdapter(ch.demo.web.ManageStudentRegistration); CreationalContext: org.jboss.weld.context.CreationalContextImpl@17e34309
      

       

       

      Obviously the problem is in the producer not in the member field mLogger.

       

      Did I miss something obvious?

       

      Many thanks in advance for your help

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