我正在从 wso2 应用服务器 5.1.0 中获取其中一个 jar 的 class not found 异常。我在这里复制了堆栈跟踪，如下所示：
[2013-09-16 14:04:17,562] INFO {org.apache.axis2.deployment.AxisConfigBuilder} - org.wso2.carbon.core.deployment.DeploymentInterceptor
[2013-09-16 14:04:17,578] FATAL {org.wso2.carbon.core.init.CarbonServerManager} - WSO2 Carbon initialization Failed
org.apache.axis2.AxisFault: Exception occured while loading the Axis configuration from C:\WSO2AS\WSO2AS~1.0\bin\../repository/conf/axis2/axis2.xml
at org.wso2.carbon.core.CarbonAxisConfigurator.getAxisConfiguration(CarbonAxisConfigurator.java:190)
at org.apache.axis2.context.ConfigurationContextFactory.createConfigurationContext(ConfigurationContextFactory.java:64)
at org.wso2.carbon.core.CarbonConfigurationContextFactory.createNewConfigurationContext(CarbonConfigurationContextFactory.java:65)
at org.wso2.carbon.core.init.CarbonServerManager.initializeCarbon(CarbonServerManager.java:398)
at org.wso2.carbon.core.init.CarbonServerManager.start(CarbonServerManager.java:219)
at org.wso2.carbon.core.internal.CarbonCoreServiceComponent.activate(CarbonCoreServiceComponent.java:69)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.eclipse.equinox.internal.ds.model.ServiceComponent.activate(ServiceComponent.java:260)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.activate(ServiceComponentProp.java:146)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:347)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
at org.eclipse.equinox.internal.ds.Resolver.getEligible(Resolver.java:343)
at org.eclipse.equinox.internal.ds.SCRManager.serviceChanged(SCRManager.java:222)
at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:107)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:861)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:819)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:771)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:130)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:214)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService(BundleContextImpl.java:433)
at org.eclipse.equinox.http.servlet.internal.Activator.registerHttpService(Activator.java:81)
at org.eclipse.equinox.http.servlet.internal.Activator.addProxyServlet(Activator.java:60)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.init(ProxyServlet.java:40)
at org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.init(DelegationServlet.java:38)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1267)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1186)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1081)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5027)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5314)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: org.apache.axis2.deployment.DeploymentException: org.wso2.carbon.core.multitenancy.MultitenantAddressingBasedDispatcher
at org.apache.axis2.deployment.util.Utils.loadHandler(Utils.java:149)
at org.apache.axis2.deployment.AxisConfigBuilder.processPhaseList(AxisConfigBuilder.java:549)
at org.apache.axis2.deployment.AxisConfigBuilder.processPhaseOrders(AxisConfigBuilder.java:580)
at org.apache.axis2.deployment.AxisConfigBuilder.populateConfig(AxisConfigBuilder.java:150)
at org.wso2.carbon.core.CarbonAxisConfigurator.populateAxisConfiguration(CarbonAxisConfigurator.java:308)
at org.wso2.carbon.core.CarbonAxisConfigurator.getAxisConfiguration(CarbonAxisConfigurator.java:188)
... 42 more
Caused by: java.lang.ClassNotFoundException: org.wso2.carbon.core.multitenancy.MultitenantAddressingBasedDispatcher
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:190)
at org.apache.axis2.util.Loader.loadClass(Loader.java:261)
at org.apache.axis2.util.Loader.loadClass(Loader.java:229)
at org.apache.axis2.deployment.util.Utils.loadHandler(Utils.java:116)
... 47 more
由于上述异常，Application Server 的 UI 无法出现。捆绑包状态信息如下：
227 ACTIVE org.wso2.carbon.caching.stub_4.1.0
228 ACTIVE org.wso2.carbon.caching.ui_4.1.0
229 ACTIVE org.wso2.carbon.captcha.mgt_4.1.0
230 ACTIVE org.wso2.carbon.cluster.mgt.core_4.1.0
231 ACTIVE org.wso2.carbon.coordination.common_4.1.0
232 ACTIVE org.wso2.carbon.coordination.core_4.1.0
233 ACTIVE org.wso2.carbon.core_4.1.0
234 ACTIVE org.wso2.carbon.core.bootup.validator_4.1.0
235 ACTIVE org.wso2.carbon.core.common_4.1.0
236 ACTIVE org.wso2.carbon.core.commons.stub_4.1.0
237 ACTIVE org.wso2.carbon.core.services_4.1.0
经过一番搜索，我发现org.wso2.carbon.core_4.1.0包含类 org.wso2.carbon.core.multitenancy.MultitenantAddressingBasedDispatcher。即使它的捆绑包是活动的，我仍然不清楚该类对类加载器的可见性..
任何有关这方面的指导都会非常有帮助。谢谢和问候，Parimal