请问北向接口中的EmsSession_I的问题

jakieyoung

我可以用一个 EmsSessionFactory_I 获取到 一个 EmsSession_I 对象
通过 EmsSessionFactory_I.getEmsSession(user, password, client_nms, emsSession_IHolder)

服务器端是把一个实现了EmsSession_I的类的实例放在emsSession_IHolder中
代码如下

1. 
   
2. EmsSession_I_Impl emsSession = new EmsSession_I_Impl();
   
3. 
   
4. // setup the EmsSession_I object
   
5. emsSession.setUsername(username);
   
6. emsSession.setEventChannel(eventChannel);
   
7. emsSession.setSupportedManagers(supportedManagers);
   
8. 
   
9. // send the EmsSession_I object to the client side
   
10. emsSessionInterface.value = emsSession;
    

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可是获取了EmsSession_I之后,不论对它做什么操作，都会产生ClassCastException

请做过的帮忙一下，感激不尽

出错信息如下

1. 
   
2. org.omg.CORBA.UNKNOWN: ----------BEGIN server-side stack trace----------
   
3. org.omg.CORBA.UNKNOWN:   vmcid: SUN  minor code: 202 completed: Maybe
   
4.         at com.sun.corba.se.impl.logging.ORBUtilSystemException.runtimeexception(Unknown Source)
   
5.         at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.convertThrowableToSystemException(Unknown Source)
   
6.         at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleThrowableDuringServerDispatch(Unknown Source)
   
7.         at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleThrowableDuringServerDispatch(Unknown Source)
   
8.         at com.sun.corba.se.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(Unknown Source)
   
9.         at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(Unknown Source)
   
10.         at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleRequest(Unknown Source)
    
11.         at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleInput(Unknown Source)
    
12.         at com.sun.corba.se.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(Unknown Source)
    
13.         at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleRequest(Unknown Source)
    
14.         at com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl.dispatch(Unknown Source)
    
15.         at com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl.doWork(Unknown Source)
    
16.         at com.sun.corba.se.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(Unknown Source)
    
17. Caused by: java.lang.ClassCastException: com.mycompany.nbi.emsSession.EmsSession_I_Impl
    
18.         at com.sun.corba.se.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(Unknown Source)
    
19.         ... 9 more
    
20. 
    
21. ----------END server-side stack trace----------
    

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