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我正在为 RMI 苦苦挣扎。我对此完全陌生，并尝试了本教程

我所有的类和接口都编译得很好，但是当我尝试运行 Server 类时，我得到了一些异常（如下所列），项目的构建如下：

-pakage hello
            --interface Hello.java
            --class Server.java
            --class Client.java

我做过 Somme 研究，他们总是建议更改安全策略文件。所以我在 java.policy 中添加了以下策略：

grant 
{  
     permission java.security.AllPermission "", "";  
};

第二个“问题”：我运行 Linux mint，所以我开始明白我不需要运行 rmiregistry，这是正确的还是我也需要启动它，我该怎么做。

列出的例外情况：

Server exception: java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
    java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
    java.lang.ClassNotFoundException: hello.Hello
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
    java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
    java.lang.ClassNotFoundException: hello.Hello
    at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:419)
    at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
    at sun.rmi.transport.Transport$1.run(Transport.java:177)
    at sun.rmi.transport.Transport$1.run(Transport.java:174)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:556)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:811)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:670)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
    at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:275)
    at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:252)
    at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:378)
    at sun.rmi.registry.RegistryImpl_Stub.bind(Unknown Source)
    at hello.Server.main(Server.java:23)

有谁能帮助我吗？

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1 回答 1

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错误清楚地表明没有找到 hello.Hello 类。请确保它在类路径中。您在提供的链接中拥有所有内容- 部分Start the Java RMI registry, server, and client

于 2013-10-30T11:57:03.097 回答