求救―在wls6.1中发布ejb碰到的问题

ahji 02-12-22

小弟初学ejb,做了一个cmp的小东东,打包没有问题。在weblogic6.1中发布时总报“java.lang.NullPointerException”错误,不知道问题出在哪儿,请各位大虾指教一二,不胜感激。具体出错信息为:
at weblogic.ejb20.deployer.CompositeMBeanDescriptor.getPersistenceUseTypeIdentifier(CompositeMBeanDescriptor.jav
a:1311)
at weblogic.ejb20.deployer.CMPInfoImpl.<init>(CMPInfoImpl.java:131)
at weblogic.ejb20.deployer.EntityBeanInfoImpl.<init>(EntityBeanInfoImpl.java:232)
at weblogic.ejb20.deployer.BeanInfoImpl.createBeanInfoImpl(BeanInfoImpl.java:333)
at weblogic.ejb20.deployer.MBeanDeploymentInfoImpl.initializeBeanInfos(MBeanDeploymentInfoImpl.java:395)
at weblogic.ejb20.deployer.MBeanDeploymentInfoImpl.<init>(MBeanDeploymentInfoImpl.java:126)
at weblogic.ejb20.ejbc.EJBCompiler.setupEJB(EJBCompiler.java:127)
at weblogic.ejb20.deployer.Deployer.runEJBC(Deployer.java:295)
at weblogic.ejb20.deployer.Deployer.compileEJB(Deployer.java:676)
at weblogic.ejb20.deployer.Deployer.deploy(Deployer.java:843)
at weblogic.j2ee.EJBComponent.deploy(EJBComponent.java:30)
at weblogic.j2ee.Application.addComponent(Application.java:160)
at weblogic.j2ee.J2EEService.addDeployment(J2EEService.java:117)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentTarget.java:329)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentTarget.java:144)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:608)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:592)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:352)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at weblogic.management.internal.ConfigurationMBeanImpl.updateConfigMBeans(ConfigurationMBeanImpl.java:484)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:354)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at weblogic.management.internal.DynamicMBeanImpl.addDeployment(DynamicMBeanImpl.java:945)
at weblogic.management.internal.DynamicMBeanImpl.addDeployment(DynamicMBeanImpl.java:932)
at weblogic.management.internal.DynamicMBeanImpl.add(DynamicMBeanImpl.java:917)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:620)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:592)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:352)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:449)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:190)
at $Proxy13.addTarget(Unknown Source)
at weblogic.management.mbeans.custom.ApplicationManager.autoDeploy(ApplicationManager.java:837)
at weblogic.management.mbeans.custom.ApplicationManager.addApplication(ApplicationManager.java:936)
at weblogic.management.mbeans.custom.ApplicationManager.addApplication(ApplicationManager.java:856)
at weblogic.management.mbeans.custom.ApplicationManager.poll(ApplicationManager.java:772)
at weblogic.management.mbeans.custom.ApplicationManager.poll(ApplicationManager.java:705)
at weblogic.management.mbeans.custom.ApplicationManager.update(ApplicationManager.java:200)
at weblogic.management.mbeans.custom.ApplicationManager$ApplicationPoller.run(ApplicationManager.java:1020)

at weblogic.ejb20.ejbc.EJBCompiler.setupEJB(EJBCompiler.java:130)
at weblogic.ejb20.deployer.Deployer.runEJBC(Deployer.java:295)
at weblogic.ejb20.deployer.Deployer.compileEJB(Deployer.java:676)
at weblogic.ejb20.deployer.Deployer.deploy(Deployer.java:843)
at weblogic.j2ee.EJBComponent.deploy(EJBComponent.java:30)
at weblogic.j2ee.Application.addComponent(Application.java:160)
at weblogic.j2ee.J2EEService.addDeployment(J2EEService.java:117)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentTarget.java:329)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentTarget.java:144)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:608)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:592)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:352)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at weblogic.management.internal.ConfigurationMBeanImpl.updateConfigMBeans(ConfigurationMBeanImpl.java:484)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:354)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at weblogic.management.internal.DynamicMBeanImpl.addDeployment(DynamicMBeanImpl.java:945)
at weblogic.management.internal.DynamicMBeanImpl.addDeployment(DynamicMBeanImpl.java:932)
at weblogic.management.internal.DynamicMBeanImpl.add(DynamicMBeanImpl.java:917)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:620)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:592)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:352)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:449)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:190)
at $Proxy13.addTarget(Unknown Source)
at weblogic.management.mbeans.custom.ApplicationManager.autoDeploy(ApplicationManager.java:837)
at weblogic.management.mbeans.custom.ApplicationManager.addApplication(ApplicationManager.java:936)
at weblogic.management.mbeans.custom.ApplicationManager.addApplication(ApplicationManager.java:856)
at weblogic.management.mbeans.custom.ApplicationManager.poll(ApplicationManager.java:772)
at weblogic.management.mbeans.custom.ApplicationManager.poll(ApplicationManager.java:705)
at weblogic.management.mbeans.custom.ApplicationManager.update(ApplicationManager.java:200)
at weblogic.management.mbeans.custom.ApplicationManager$ApplicationPoller.run(ApplicationManager.java:1020)