robert walker [https://community.jboss.org/people/robertwalker] created the discussion "moving from 7.0.1 to 7.1final , getting NoClassDefFoundError" To view the discussion, visit: https://community.jboss.org/message/719981#719981 -------------------------------------------------------------- hi all, i am trying to move to the new 7.1.0 from the 7.0.1 release. I have no errors in 7.0.1 I only have 1 deployed webapp, and apparently something is not being found. I do indeed have a 7.1.0.Final/modules/org/apache/log4j/main/log4j-1.2.16.jar so unsure why is is stating   NoClassDefFoundError: org/apache/log4j/Priority maybe it is not really not found but more of a conflict error, but not sure where to begin thanks all .... and BTW, great app server!   we are using  jee 6 type structure/technologies with stateless session beans and richfaces 4, great stuff!!!! 13:26:02,751 INFO  [org.jboss.weld.ClassLoading] (MSC service thread 1-1) catching: org.jboss.weld.resources.spi.ResourceLoadingException: Error loading class org.jboss.logging.Log4jLogger         at org.jboss.weld.resources.ClassTransformer.loadClass(ClassTransformer.java:152) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.bootstrap.BeanDeployer.addClass(BeanDeployer.java:86) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.bootstrap.BeanDeployer.addClasses(BeanDeployer.java:115) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.bootstrap.BeanDeployment.createBeans(BeanDeployment.java:171) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.bootstrap.WeldBootstrap.deployBeans(WeldBootstrap.java:336) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.as.weld.WeldContainer.start(WeldContainer.java:82) [jboss-as-weld-7.1.0.Final.jar:7.1.0.Final]         at org.jboss.as.weld.services.WeldService.start(WeldService.java:76) [jboss-as-weld-7.1.0.Final.jar:7.1.0.Final]         at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811)         at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746)         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0.10]         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0.10]         at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0.10] Caused by: java.lang.NoClassDefFoundError: org/apache/log4j/Priority         at java.lang.Class.getDeclaredFields0(Native Method) [rt.jar:1.6.0.10]         at java.lang.Class.privateGetDeclaredFields(Class.java:2318) [rt.jar:1.6.0.10]         at java.lang.Class.getDeclaredFields(Class.java:1747) [rt.jar:1.6.0.10]         at org.jboss.weld.util.reflection.SecureReflections$4.work(SecureReflections.java:102) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.util.reflection.SecureReflections$4.work(SecureReflections.java:99) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.util.reflection.SecureReflectionAccess.run(SecureReflectionAccess.java:52) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.util.reflection.SecureReflectionAccess.runAndWrap(SecureReflectionAccess.java:63) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.util.reflection.SecureReflections.getDeclaredFields(SecureReflections.java:99) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.introspector.jlr.WeldClassImpl.<init>(WeldClassImpl.java:153) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.introspector.jlr.WeldClassImpl.of(WeldClassImpl.java:118) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.resources.ClassTransformer$TransformTypeToWeldClass.apply(ClassTransformer.java:49) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.resources.ClassTransformer$TransformTypeToWeldClass.apply(ClassTransformer.java:40) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at com.google.common.collect.ComputingConcurrentHashMap$ComputingValueReference.compute(ComputingConcurrentHashMap.java:355)         at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.compute(ComputingConcurrentHashMap.java:184) [guava-r08.jar:]         at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.getOrCompute(ComputingConcurrentHashMap.java:153) [guava-r08.jar:]         at com.google.common.collect.ComputingConcurrentHashMap.getOrCompute(ComputingConcurrentHashMap.java:69) [guava-r08.jar:]         at com.google.common.collect.ComputingConcurrentHashMap$ComputingMapAdapter.get(ComputingConcurrentHashMap.java:393)         at org.jboss.weld.resources.ClassTransformer.loadClass(ClassTransformer.java:149) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         ... 11 more Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Priority from [Module "org.jboss.logging:main" from local module loader @b01d43 (roots: /opt/app/jboss-as-7.1.0.Final/modules)]         at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)         at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)         at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)         at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:423)         at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)         at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)         ... 29 more 13:26:02,913 INFO  [org.jboss.seam.solder.core.CoreExtension] (MSC service thread 1-1) Preventing class org.jboss.seam.solder.resourceLoader.ResourceProvider from being installed as bean due to @Veto annotat ion 13:26:02,991 INFO  [org.jboss.weld.ClassLoading] (MSC service thread 1-1) WELD-000119 Not generating any bean definitions from org.jboss.logging.Slf4jLogger because of underlying class loading error 13:26:02,993 INFO  [org.jboss.weld.ClassLoading] (MSC service thread 1-1) catching: org.jboss.weld.resources.spi.ResourceLoadingException: Error loading class org.jboss.logging.Slf4jLogger         at org.jboss.weld.resources.ClassTransformer.loadClass(ClassTransformer.java:152) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.bootstrap.BeanDeployer.addClass(BeanDeployer.java:86) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.bootstrap.BeanDeployer.addClasses(BeanDeployer.java:115) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31] at org.jboss.weld.bootstrap.WeldBootstrap.deployBeans(WeldBootstrap.java:336) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.as.weld.WeldContainer.start(WeldContainer.java:82) [jboss-as-weld-7.1.0.Final.jar:7.1.0.Final]         at org.jboss.as.weld.services.WeldService.start(WeldService.java:76) [jboss-as-weld-7.1.0.Final.jar:7.1.0.Final]         at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811)         at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746)         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0.10]         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0.10]         at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0.10] Caused by: java.lang.NoClassDefFoundError: Lorg/slf4j/Logger;         at java.lang.Class.getDeclaredFields0(Native Method) [rt.jar:1.6.0.10]         at java.lang.Class.privateGetDeclaredFields(Class.java:2318) [rt.jar:1.6.0.10]         at java.lang.Class.getDeclaredFields(Class.java:1747) [rt.jar:1.6.0.10]         at org.jboss.weld.util.reflection.SecureReflections$4.work(SecureReflections.java:102) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.util.reflection.SecureReflections$4.work(SecureReflections.java:99) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.util.reflection.SecureReflectionAccess.run(SecureReflectionAccess.java:52) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.util.reflection.SecureReflectionAccess.runAndWrap(SecureReflectionAccess.java:63) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.util.reflection.SecureReflections.getDeclaredFields(SecureReflections.java:99) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.introspector.jlr.WeldClassImpl.<init>(WeldClassImpl.java:153) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.introspector.jlr.WeldClassImpl.of(WeldClassImpl.java:118) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.resources.ClassTransformer$TransformTypeToWeldClass.apply(ClassTransformer.java:49) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.resources.ClassTransformer$TransformTypeToWeldClass.apply(ClassTransformer.java:40) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at com.google.common.collect.ComputingConcurrentHashMap$ComputingValueReference.compute(ComputingConcurrentHashMap.java:355)         at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.compute(ComputingConcurrentHashMap.java:184) [guava-r08.jar:]         at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.getOrCompute(ComputingConcurrentHashMap.java:153) [guava-r08.jar:]         at com.google.common.collect.ComputingConcurrentHashMap.getOrCompute(ComputingConcurrentHashMap.java:69) [guava-r08.jar:]         at com.google.common.collect.ComputingConcurrentHashMap$ComputingMapAdapter.get(ComputingConcurrentHashMap.java:393)         at org.jboss.weld.resources.ClassTransformer.loadClass(ClassTransformer.java:149) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         ... 11 more Caused by: java.lang.ClassNotFoundException: org.slf4j.Logger from [Module "org.jboss.logging:main" from local module loader @b01d43 (roots: /opt/app/jboss-as-7.1.0.Final/modules)]         at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)         at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)         at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)         at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:423)         at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)         at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)         ... 29 more 13:26:03,028 INFO  [org.jboss.weld.ClassLoading] (MSC service thread 1-1) WELD-000119 Not generating any bean definitions from org.jboss.logging.Slf4jLocationAwareLogger because of underlying class loading e rror 13:26:03,030 INFO  [org.jboss.weld.ClassLoading] (MSC service thread 1-1) catching: org.jboss.weld.resources.spi.ResourceLoadingException: Error loading class org.jboss.logging.Slf4jLocationAwareLogger         at org.jboss.weld.resources.ClassTransformer.loadClass(ClassTransformer.java:152) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.bootstrap.BeanDeployer.addClass(BeanDeployer.java:86) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.bootstrap.BeanDeployer.addClasses(BeanDeployer.java:115) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.bootstrap.BeanDeployment.createBeans(BeanDeployment.java:171) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.weld.bootstrap.WeldBootstrap.deployBeans(WeldBootstrap.java:336) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]         at org.jboss.as.weld.WeldContainer.start(WeldContainer.java:82) [jboss-as-weld-7.1.0.Final.jar:7.1.0.Final]         at org.jboss.as.weld.services.WeldService.start(WeldService.java:76) [jboss-as-weld-7.1.0.Final.jar:7.1.0.Final] -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/719981#719981] Start a new discussion in JBoss AS 7 Development at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]