我们的项目基于Servlet-EJB，我们已经在weblogic 12.2.1.3（latest）中部署了该项目。我们已经将项目所需的所有外部jar粘贴到了base_domain文件夹的lib文件夹中。我们使用的是jdk 1.8。
在Windows操作系统中，同样效果很好。但是在solaris os上，我们的托管服务器出现以下异常（管理服务器运行正常）。 com.lowagie.text.Element类在itextpdf.jar中可用，而base_domain文件夹的lib文件夹中也可用。请帮忙。
weblogic.application.ModuleException: java.lang.ClassNotFoundException: com.lowagie.text.Element
at weblogic.application.internal.ExtensibleModuleWrapper.prepare(ExtensibleModuleWrapper.java:114)
at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:100)
at weblogic.application.internal.flow.ModuleStateDriver$1.next(ModuleStateDriver.java:192)
at weblogic.application.internal.flow.ModuleStateDriver$1.next(ModuleStateDriver.java:187)
at weblogic.application.utils.StateMachineDriver$ParallelChange.run(StateMachineDriver.java:83)
at weblogic.application.utils.StateMachineDriver.nextStateInParallel(StateMachineDriver.java:144)
at weblogic.application.internal.flow.ModuleStateDriver.parallelPrepare(ModuleStateDriver.java:46)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:75)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:55)
at weblogic.application.internal.BaseDeployment$1.next(BaseDeployment.java:729)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
at weblogic.application.internal.BaseDeployment.prepare(BaseDeployment.java:241)
at weblogic.application.internal.EarDeployment.prepare(EarDeployment.java:66)
at weblogic.application.internal.DeploymentStateChecker.prepare(DeploymentStateChecker.java:158)
at weblogic.deploy.internal.targetserver.AppContainerInvoker.prepare(AppContainerInvoker.java:65)
at weblogic.deploy.internal.targetserver.AppDeployment.prepare(AppDeployment.java:166)
at weblogic.management.deploy.internal.DeploymentAdapter$1.doPrepare(DeploymentAdapter.java:41)
at weblogic.management.deploy.internal.DeploymentAdapter.prepare(DeploymentAdapter.java:193)
at weblogic.management.deploy.internal.AppTransition$1.transitionApp(AppTransition.java:31)
at weblogic.management.deploy.internal.ConfiguredDeployments$2.doItem(ConfiguredDeployments.java:741)
at weblogic.management.deploy.internal.parallel.BucketInvoker.invoke(BucketInvoker.java:138)
at weblogic.management.deploy.internal.ConfiguredDeployments.transitionAppsParallel(ConfiguredDeployments.java:749)
at weblogic.management.deploy.internal.ConfiguredDeployments.prepare(ConfiguredDeployments.java:363)
at weblogic.management.deploy.internal.ConfiguredDeployments.deploy(ConfiguredDeployments.java:232)
at weblogic.management.deploy.internal.DeploymentServerService.resume(DeploymentServerService.java:219)
at weblogic.management.deploy.internal.DeploymentServerService.start(DeploymentServerService.java:133)
at weblogic.server.AbstractServerService.postConstruct(AbstractServerService.java:76)
at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.glassfish.hk2.utilities.reflection.ReflectionHelper.invoke(ReflectionHelper.java:1287)
at org.jvnet.hk2.internal.ClazzCreator.postConstructMe(ClazzCreator.java:333)
at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:375)
at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:487)
at org.glassfish.hk2.runlevel.internal.AsyncRunLevelContext.findOrCreate(AsyncRunLevelContext.java:305)
at org.glassfish.hk2.runlevel.RunLevelContext.findOrCreate(RunLevelContext.java:85)
at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2126)
at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:116)
at org.jvnet.hk2.internal.ServiceLocatorImpl.getService(ServiceLocatorImpl.java:698)
at org.jvnet.hk2.internal.ThreeThirtyResolver.resolve(ThreeThirtyResolver.java:78)
at org.jvnet.hk2.internal.ClazzCreator.resolve(ClazzCreator.java:212)
at org.jvnet.hk2.internal.ClazzCreator.resolveAllDependencies(ClazzCreator.java:235)
at org.jvnet.hk2.internal.ClazzCreator.create(ClazzCreator.java:358)
at org.jvnet.hk2.internal.SystemDescriptor.create(SystemDescriptor.java:487)
at org.glassfish.hk2.runlevel.internal.AsyncRunLevelContext.findOrCreate(AsyncRunLevelContext.java:305)
at org.glassfish.hk2.runlevel.RunLevelContext.findOrCreate(RunLevelContext.java:85)
at org.jvnet.hk2.internal.Utilities.createService(Utilities.java:2126)
at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:116)
at org.jvnet.hk2.internal.ServiceHandleImpl.getService(ServiceHandleImpl.java:90)
at org.glassfish.hk2.runlevel.internal.CurrentTaskFuture$QueueRunner.oneJob(CurrentTaskFuture.java:1237)
at org.glassfish.hk2.runlevel.internal.CurrentTaskFuture$QueueRunner.run(CurrentTaskFuture.java:1168)
at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:670)
at weblogic.invocation.ComponentInvocationContextManager._runAs(ComponentInvocationContextManager.java:352)
at weblogic.invocation.ComponentInvocationContextManager.runAs(ComponentInvocationContextManager.java:337)
at weblogic.work.LivePartitionUtility.doRunWorkUnderContext(LivePartitionUtility.java:57)
at weblogic.work.PartitionUtility.runWorkUnderContext(PartitionUtility.java:41)
at weblogic.work.SelfTuningWorkManagerImpl.runWorkUnderContext(SelfTuningWorkManagerImpl.java:644)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:415)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:355)
Caused by: java.lang.ClassNotFoundException: com.lowagie.text.Element
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:1029)
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:990)
at weblogic.utils.classloaders.ChangeAwareClassLoader.findClass(ChangeAwareClassLoader.java:104)
at weblogic.utils.classloaders.GenericClassLoader.doFindClass(GenericClassLoader.java:611)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:543)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClassLoader.java:496)
at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:72)
at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAwareClassLoader.java:53)
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Class.java:2583)
at java.lang.Class.getDeclaredFields(Class.java:1916)
at weblogic.j2ee.dd.xml.BaseJ2eeAnnotationProcessor.getFields(BaseJ2eeAnnotationProcessor.java:1047)
at weblogic.j2ee.dd.xml.BaseJ2eeAnnotationProcessor.getFields(BaseJ2eeAnnotationProcessor.java:1041)
at weblogic.j2ee.dd.xml.BaseJ2eeAnnotationProcessor.processJ2eeAnnotations(BaseJ2eeAnnotationProcessor.java:145)
at weblogic.j2ee.dd.xml.J2eeAnnotationProcessor.processJ2eeAnnotations(J2eeAnnotationProcessor.java:47)
at weblogic.servlet.internal.WebAnnotationProcessor.processJ2eeAnnotations(WebAnnotationProcessor.java:707)
at weblogic.servlet.internal.WebAnnotationProcessor.processServlet(WebAnnotationProcessor.java:475)
at weblogic.servlet.internal.AnnotationProcessingManager.processServlets(AnnotationProcessingManager.java:242)
at weblogic.servlet.internal.AnnotationProcessingManager.processAnnotationsInWebXml(AnnotationProcessingManager.java:228)
at weblogic.servlet.internal.AnnotationProcessingManager.processAnnotations(AnnotationProcessingManager.java:131)
at weblogic.servlet.internal.AnnotationProcessingManager.processAnnotations(AnnotationProcessingManager.java:105)
at weblogic.servlet.internal.WebAppModule.processAnnotations(WebAppModule.java:1995)
at weblogic.servlet.internal.WebAppModule.processAnnotations(WebAppModule.java:1957)
at weblogic.servlet.internal.WebAppModule.prepare(WebAppModule.java:802)
at weblogic.application.internal.ExtensibleModuleWrapper$PrepareStateChange.next(ExtensibleModuleWrapper.java:295)
at weblogic.application.internal.ExtensibleModuleWrapper$PrepareStateChange.next(ExtensibleModuleWrapper.java:285)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
at weblogic.application.internal.ExtensibleModuleWrapper.prepare(ExtensibleModuleWrapper.java:109)
... 58 more
at weblogic.application.utils.StateMachineDriver.nextStateInParallel(StateMachineDriver.java:183)
at weblogic.application.internal.flow.ModuleStateDriver.parallelPrepare(ModuleStateDriver.java:46)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:75)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:55)
at weblogic.application.internal.BaseDeployment$1.next(BaseDeployment.java:729)
Truncated. see log file for complete stacktrace
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