Question

运行客户端时，控制台上会显示以下错误。

我正在关注以下链接中的示例 - ＆gt; http://www.oracle.com/technetwork/articles/javase/rmi-corba-136641.html

有没有人遇到过simillar问题。请帮忙。

客户端控制台：

FileClient Error: ----------BEGIN server-side stack trace----------
org.omg.CORBA.UNKNOWN:   vmcid: SUN  minor code: 202 completed: Maybe
    at com.sun.corba.se.impl.logging.ORBUtilSystemException.runtimeexception(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.convertThrowableToSystemException(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleThrowableDuringServerDispatch(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleThrowableDuringServerDispatch(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleRequest(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleInput(Unknown Source)
    at com.sun.corba.se.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleRequest(Unknown Source)
    at com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl.dispatch(Unknown Source)
    at com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl.doWork(Unknown Source)
    at com.sun.corba.se.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.performWork(Unknown Source)
    at com.sun.corba.se.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(Unknown Source)
Caused by: java.lang.ClassCastException: FileTransferObj cannot be cast to org.omg.CORBA.portable.InvokeHandler
    at com.sun.corba.se.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(Unknown Source)
    ... 10 more

----------END server-side stack trace----------
org.omg.CORBA.UNKNOWN: ----------BEGIN server-side stack trace----------
org.omg.CORBA.UNKNOWN:   vmcid: SUN  minor code: 202 completed: Maybe
    at com.sun.corba.se.impl.logging.ORBUtilSystemException.runtimeexception(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.convertThrowableToSystemException(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleThrowableDuringServerDispatch(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleThrowableDuringServerDispatch(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleRequest(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleInput(Unknown Source)
    at com.sun.corba.se.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.handleRequest(Unknown Source)
    at com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl.dispatch(Unknown Source)
    at com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl.doWork(Unknown Source)
    at com.sun.corba.se.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.performWork(Unknown Source)
    at com.sun.corba.se.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(Unknown Source)
Caused by: java.lang.ClassCastException: FileTransferObj cannot be cast to org.omg.CORBA.portable.InvokeHandler
    at com.sun.corba.se.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(Unknown Source)
    ... 10 more

----------END server-side stack trace----------  vmcid: SUN  minor code: 202 completed: Maybe
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.sun.corba.se.impl.protocol.giopmsgheaders.MessageBase.getSystemException(Unknown Source)
    at com.sun.corba.se.impl.protocol.giopmsgheaders.ReplyMessage_1_2.getSystemException(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaMessageMediatorImpl.getSystemExceptionReply(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaClientRequestDispatcherImpl.processResponse(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaClientRequestDispatcherImpl.marshalingComplete(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaClientDelegateImpl.invoke(Unknown Source)
    at org.omg.CORBA.portable.ObjectImpl._invoke(Unknown Source)
    at FileTransferApp._FileInterfaceStub.downloadFile(_FileInterfaceStub.java:20)
    at StartClient.main(StartClient.java:29)

Answer 1

所以遇到这个问题的人都是。当然必须遵循http://www.oracle.com/technetwork/articles/javase/rmi-corba-136641.html中给出的示例。

请该程序的作者在旧版本的JDK中运行该程序。所以这就是我遇到这些错误的原因。

所以请跟进CORBA example uses a different JDK中的解决方案。

这将有助于并且还注意到在类中我们实现该方法的位置。我使用extends FileInterfacePOA代替extends _FileInterfaceImplBase

在CORBA中实现分布式对象编程以下载文件

1 个答案: