ejb entity 問題

谁有人遇上这个问题, 单机客户端测试:
client ->SessionBean->Entity 就会错误
client ->SeesiionBean 没有问题
CustomerBean.javapublic Customer getCustomer(String id) {
        Query query = entityManager.createNamedQuery("Customer.findByCustid");
        query.setParameter("custid", id);        return (Customer) query.getSingleResult();
    }    public String getMessage() {
        return "Helloworld";
    }
单机周用EJB        Properties props = new Properties();
        props.load(new FileInputStream("jndi.properties"));
        InitialContext ctx = new InitialContext(props);
        CustomerRemote testEJB = (CustomerRemote) ctx.lookup("stateless.CustomerRemote");
        
        System.out.println(testEJB.getMessage()); // no error
        
        System.out.println(testEJB.getCustomer("1").getName()); // more error 请看下面的错误
2009年7月15日 下午05:07:58 com.sun.corba.ee.impl.encoding.CDRInputStream_1_0 readRMIIIOPValueType
警告: "IOP00810211: (MARSHAL) Exception from readValue on ValueHandler in CDRInputStream"
org.omg.CORBA.MARSHAL:   vmcid: SUN  minor code: 211 completed: Maybe
        at com.sun.corba.ee.impl.logging.ORBUtilSystemException.valuehandlerReadException(ORBUtilSystemException.java:8423)
        at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.readRMIIIOPValueType(CDRInputStream_1_0.java:973)
        at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_value(CDRInputStream_1_0.java:1052)
        at com.sun.corba.ee.impl.encoding.CDRInputStream.read_value(CDRInputStream.java:475)
        at com.sun.corba.ee.impl.io.IIOPInputStream.inputObjectField(IIOPInputStream.java:1983)
        at com.sun.corba.ee.impl.io.IIOPInputStream.inputClassFields(IIOPInputStream.java:2208)
        at com.sun.corba.ee.impl.io.IIOPInputStream.inputObject(IIOPInputStream.java:1220)
        at com.sun.corba.ee.impl.io.IIOPInputStream.simpleReadObject(IIOPInputStream.java:422)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl.readValueInternal(ValueHandlerImpl.java:362)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl.readValue(ValueHandlerImpl.java:328)
        at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.readRMIIIOPValueType(CDRInputStream_1_0.java:966)
        at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.read_value(CDRInputStream_1_0.java:1052)
        at com.sun.corba.ee.impl.encoding.CDRInputStream.read_value(CDRInputStream.java:475)
        at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl$14.read(DynamicMethodMarshallerImpl.java:368)
        at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl.readResult(DynamicMethodMarshallerImpl.java:466)
        at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.privateInvoke(StubInvocationHandlerImpl.java:195)
        at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:152)
        at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(BCELStubBase.java:225)
        at statless.__CustomerRemote_Remote_DynamicStub.getCustomer(stateless/__CustomerRemote_Remote_DynamicStub.java)
        at statless._CustomerRemote_Wrapper.getCustomer(statless/_CustomerRemote_Wrapper.java)Caused by: java.io.IOException: Mismatched serialization UIDs : Source (Rep. IDRMI:oracle.toplink.essentials.indirection.IndirectList:C736541957C385C5:7070E88CAC21B40B) = 7070E88CAC21B40B whereas Target (Rep. ID RMI:oracle.toplink.essentials.indirection.IndirectList:C736541957C385C5:8CE233D0CA77EED4) = 8CE233D0CA77EED4
        at com.sun.corba.ee.impl.util.RepositoryId.useFullValueDescription(RepositoryId.java:650)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl.useFullValueDescription(ValueHandlerImpl.java:420)
        at com.sun.corba.ee.impl.io.IIOPInputStream.simpleReadObject(IIOPInputStream.java:419)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl.readValueInternal(ValueHandlerImpl.java:362)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl.readValue(ValueHandlerImpl.java:328)
        at com.sun.corba.ee.impl.encoding.CDRInputStream_1_0.readRMIIIOPValueType(CDRInputStream_1_0.java:966)
        ... 44 more
Exception in thread "AWT-EventQueue-0" javax.ejb.EJBException: nested exception is: java.rmi.MarshalException: CORBA MARSHAL 1398079699 Maybe; nested exception is: 
        org.omg.CORBA.MARSHAL:   vmcid: SUN  minor code: 211 completed: Maybe
java.rmi.MarshalException: CORBA MARSHAL 1398079699 Maybe; nested exception is: 
        org.omg.CORBA.MARSHAL:   vmcid: SUN  minor code: 211 completed: Maybe
        at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.mapSystemException(Util.java:279)
        at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.privateInvoke(StubInvocationHandlerImpl.java:205)
        at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:152)
        at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(BCELStubBase.java:225)