求助EJB部署问题

Question

不知道什么原因一个简单的例子在WebLogic8.1上部署总出错，哪位老鸟帮忙解决以下，小弟先谢谢了！
报错如下：
Exception:weblogic.management.ApplicationException: prepare failed for myfirstejb_hello Module: myfirstejb_hello Error: Exception preparing module: EJBModule(myfirstejb_hello,status=NEW) Unable to deploy EJB: MyFirstEJB from myfirstejb_hello.jar: java.lang.AssertionError: Unable to find expected methods. Please check your classpath for stale versions of your ejb classes and re-run weblogic.ejbc at MyFirstEJB_impt5j_HomeImpl.<clinit>(MyFirstEJB_impt5j_HomeImpl.java:55) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:274) at java.lang.Class.newInstance0(Class.java:306) at java.lang.Class.newInstance(Class.java:259) at weblogic.ejb20.deployer.ClientDrivenBeanInfoImpl.prepare(ClientDrivenBeanInfoImpl.java:974) at weblogic.ejb20.deployer.EJBDeployer.setupBeanInfos(EJBDeployer.java:983) at weblogic.ejb20.deployer.EJBDeployer.prepare(EJBDeployer.java:1283) at weblogic.ejb20.deployer.EJBModule.prepare(EJBModule.java:477) at weblogic.j2ee.J2EEApplicationContainer.prepareModule(J2EEApplicationContainer.java:2962) at weblogic.j2ee.J2EEApplicationContainer.prepareModules(J2EEApplicationContainer.java:1534) at weblogic.j2ee.J2EEApplicationContainer.prepare(J2EEApplicationContainer.java:118 at weblogic.j2ee.J2EEApplicationContainer.prepare(J2EEApplicationContainer.java:1031) at weblogic.management.deploy.slave.SlaveDeployer$ComponentActivateTask.prepareContainer(SlaveDeployer.java:2602) at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.createContainer(SlaveDeployer.java:2552) at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.prepare(SlaveDeployer.java:2474) at weblogic.management.deploy.slave.SlaveDeployer.processPrepareTask(SlaveDeployer.java:79 at weblogic.management.deploy.slave.SlaveDeployer.prepareDelta(SlaveDeployer.java:507) at weblogic.management.deploy.slave.SlaveDeployer.prepareUpdate(SlaveDeployer.java:465) at weblogic.drs.internal.SlaveCallbackHandler$1.execute(SlaveCallbackHandler.java:25) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)

[Deployer:149033]preparing application myfirstejb_hello on myserver
[Deployer:149033]failed application myfirstejb_hello on myserver
[Deployer:149034]An exception occurred for task [Deployer:149026]Deploy application myfirstejb_hello on myserver.: Exception:weblogic.management.ApplicationException: prepare failed for myfirstejb_hello Module: myfirstejb_hello Error: Exception preparing module: EJBModule(myfirstejb_hello,status=NEW) Unable to deploy EJB: MyFirstEJB from myfirstejb_hello.jar: java.lang.AssertionError: Unable to find expected methods. Please check your classpath for stale versions of your ejb classes and re-run weblogic.ejbc at MyFirstEJB_impt5j_HomeImpl.<clinit>(MyFirstEJB_impt5j_HomeImpl.java:55) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:274) at java.lang.Class.newInstance0(Class.java:306) at java.lang.Class.newInstance(Class.java:259) at weblogic.ejb20.deployer.ClientDrivenBeanInfoImpl.prepare(ClientDrivenBeanInfoImpl.java:974) at weblogic.ejb20.deployer.EJBDeployer.setupBeanInfos(EJBDeployer.java:983) at weblogic.ejb20.deployer.EJBDeployer.prepare(EJBDeployer.java:1283) at weblogic.ejb20.deployer.EJBModule.prepare(EJBModule.java:477) at weblogic.j2ee.J2EEApplicationContainer.prepareModule(J2EEApplicationContainer.java:2962) at weblogic.j2ee.J2EEApplicationContainer.prepareModules(J2EEApplicationContainer.java:1534) at weblogic.j2ee.J2EEApplicationContainer.prepare(J2EEApplicationContainer.java:118 at weblogic.j2ee.J2EEApplicationContainer.prepare(J2EEApplicationContainer.java:1031) at weblogic.management.deploy.slave.SlaveDeployer$ComponentActivateTask.prepareContainer(SlaveDeployer.java:2602) at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.createContainer(SlaveDeployer.java:2552) at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.prepare(SlaveDeployer.java:2474) at weblogic.management.deploy.slave.SlaveDeployer.processPrepareTask(SlaveDeployer.java:79 at weblogic.management.deploy.slave.SlaveDeployer.prepareDelta(SlaveDeployer.java:507) at weblogic.management.deploy.slave.SlaveDeployer.prepareUpdate(SlaveDeployer.java:465) at weblogic.drs.internal.SlaveCallbackHandler$1.execute(SlaveCallbackHandler.java:25) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170) .

Answer 1

从字面上看，是你的class 没找到，可能程序里指定的class路径不对
我对编成不是非常熟悉，也就只能看看log ，大概判断下错误