调用jboss下的ejb出错,怪错误

只是调用ejb下的一个方法,有时出错,有时正常.
java.lang.IllegalStateException: Failed to find method for hash:-2219554015197726321

at org.jboss.invocation.MarshalledInvocation.getMethod(MarshalledInvocation.java:261)

at org.jboss.ejb.Container.invoke(Container.java:699)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:324)

at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)

at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)

at org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:367)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:324)

at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)

at sun.rmi.transport.Transport$1.run(Transport.java:148)

at java.security.AccessController.doPrivileged(Native Method)

at sun.rmi.transport.Transport.serviceCall(Transport.java:144)

at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)

at java.lang.Thread.run(Thread.java:536)

at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:247)

at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:223)

at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:133)

at org.jboss.invocation.jrmp.server.JRMPInvoker_Stub.invoke(Unknown Source)

at org.jboss.invocation.jrmp.interfaces.JRMPInvokerProxy.invoke(JRMPInvokerProxy.java:135)

at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:96)

at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:46)

at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:45)

at org.jboss.proxy.ejb.StatelessSessionInterceptor.invoke(StatelessSessionInterceptor.java:100)

at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:85)

at $Proxy1.deletePermission(Unknown Source)

at test.common.aop.authorization.AuthorizationEJBTestClient.main(AuthorizationEJBTestClient.java:23)

Exception in thread "main"

方法中包含的对象可能没有序列化。建议继承java.io.seriXX接口

我想不是序列化的问题,可能是我刚开始没有说明白,在jboss运行的情况下
我在jbuilder中为ejb增加了一个方法,然后编译生成重新发布,这时才出现这种情况,要求发布后,重新起动jboss.再用新建的方法是正常的.我用的jboss3.2和3.3后在jboss3.08中用就没有这个问题.请帮助.