5 Replies Latest reply: Sep 4, 2013 2:55 AM by Tang Yong RSS

    Problem with Classloading Isolation in JBoss 7.0.1

    gnu Newbie

      Hi all,

       

      I have created an (Java EE 6) EAR project with two WAR projects within my Eclipse Indigo. Each web module contains only one simple bean with the same name and the @Named annotation attached. Each web module has an empty beans.xml, too.

       

      (Hot-)deploying this EAR to my local JBoss 7.0.1 default instance causes the following error indicating that the classloader isolation in JBoss 7 does not work correctly.

       

      10:59:54,723 INFO  [org.jboss.weld] (MSC service thread 1-1) Processing CDI deployment: multimodule-ear.ear

      10:59:54,785 INFO  [org.jboss.weld] (MSC service thread 1-7) Processing CDI deployment: multimodule-war2.war

      10:59:54,785 INFO  [org.jboss.weld] (MSC service thread 1-10) Processing CDI deployment: multimodule-war1.war

      10:59:54,801 INFO  [org.jboss.weld] (MSC service thread 1-9) Starting Services for CDI deployment: multimodule-ear.ear

      10:59:54,864 INFO  [org.jboss.weld.Version] (MSC service thread 1-9) WELD-000900 1.1.2 (Final)

      10:59:54,879 INFO  [org.jboss.weld] (MSC service thread 1-7) Starting weld service

      10:59:56,192 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-7) MSC00001: Failed to start service jboss.deployment.unit."multimodule-ear.ear".WeldService: org.jboss.msc.service.StartException in service jboss.deployment.unit."multimodule-ear.ear".WeldService: org.jboss.weld.exceptions.DeploymentException: WELD-001414 Bean name is ambiguous. Name demoBean resolves to beans [Managed Bean [class demo1.DemoBean] with qualifiers [@Any @Default @Named], Managed Bean [class demo2.DemoBean] with qualifiers [@Any @Default @Named]]

          at org.jboss.as.weld.services.WeldService.start(WeldService.java:96)

          at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1765)

          at org.jboss.msc.service.ServiceControllerImpl$ClearTCCLTask.run(ServiceControllerImpl.java:2291)

          at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_24]

          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_24]

          at java.lang.Thread.run(Thread.java:662) [:1.6.0_24]

      Caused by: org.jboss.weld.exceptions.DeploymentException: WELD-001414 Bean name is ambiguous. Name demoBean resolves to beans [Managed Bean [class demo1.DemoBean] with qualifiers [@Any @Default @Named], Managed Bean [class demo2.DemoBean] with qualifiers [@Any @Default @Named]]

          at org.jboss.weld.bootstrap.Validator.validateBeanNames(Validator.java:456)

          at org.jboss.weld.bootstrap.Validator.validateDeployment(Validator.java:342)

          at org.jboss.weld.bootstrap.WeldBootstrap.validateBeans(WeldBootstrap.java:404)

          at org.jboss.as.weld.WeldContainer.start(WeldContainer.java:82)

          at org.jboss.as.weld.services.WeldService.start(WeldService.java:89)

          ... 5 more

       

      10:59:56,192 ERROR [org.jboss.as] (MSC service thread 1-12) JBoss AS 7.0.1.Final "Zap" started (with errors) in 19547ms - Started 155 of 256 services (40 services failed or missing dependencies, 61 services are passive or on-demand)

      10:59:56,410 INFO  [org.jboss.as.server.controller] (DeploymentScanner-threads - 2) Deployment of "multimodule-ear.ear" was rolled back with failure message {"Failed services" => {"jboss.deployment.unit.\"multimodule-ear.ear\".WeldService" => "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"multimodule-ear.ear\".WeldService: org.jboss.weld.exceptions.DeploymentException: WELD-001414 Bean name is ambiguous. Name demoBean resolves to beans [Managed Bean [class demo1.DemoBean] with qualifiers [@Any @Default @Named], Managed Bean [class demo2.DemoBean] with qualifiers [@Any @Default @Named]]"}}

      10:59:56,442 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-3) Stopped deployment multimodule-war2.war in 38ms

      10:59:56,442 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-8) Stopped deployment multimodule-war1.war in 38ms

      10:59:56,442 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-5) Stopped deployment multimodule-ear.ear in 40ms

      10:59:56,442 ERROR [org.jboss.as.deployment] (DeploymentScanner-threads - 1) {"Composite operation failed and was rolled back. Steps that failed:" => {"Operation step-2" => {"Failed services" => {"jboss.deployment.unit.\"multimodule-ear.ear\".WeldService" => "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"multimodule-ear.ear\".WeldService: org.jboss.weld.exceptions.DeploymentException: WELD-001414 Bean name is ambiguous. Name demoBean resolves to beans [Managed Bean [class demo1.DemoBean] with qualifiers [@Any @Default @Named], Managed Bean [class demo2.DemoBean] with qualifiers [@Any @Default @Named]]"}}}}

       

       

      As per the JBoss 7 specification the classloaders of war-modules should be isolated per default, and therefore the two beans should not be visible to each other at all. Can you tell me, why this error then occurs and how I can prevent from it?

       

      Thanks for your reply in advance.

      Gnu

       

      The multi-module sample is attached as a ZIP