我正在尝试实现sun教程rmi应用程序来计算pi。我有一些严重的问题，我找不到解决办法，即使我已经搜索了整个网络和几个熟练的javapeople。我希望你能结束我的沮丧。
疯狂的是，我可以从我的桌面电脑上的cmd运行应用程序。在我的笔记本电脑上的相同目录中使用完全相同的代码尝试完全相同的操作会产生以下错误。当我尝试将客户机连接到服务器时出现问题。
我不相信错误是由于我的策略文件，因为我可以在桌面上运行它。一定在别的地方。有没有人试过同样的方法，你能告诉我我的问题出在哪里吗？

POLICYFILE SERVER:
grant
{
    permission java.security.AllPermissions;
    permission java.net.SocketPermission"*", "connect, resolve";
};

POLICYFILE CLIENT:
grant
{
    permission java.security.AllPermissions;
    permission java.net.SocketPermission"*", "connect, resolve";

};
______________________________________________

SERVERSIDE ERRORS:
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\STUDENT>cd\

C:\>start rmiregistry

C:\>java -cp c:\java;c:\java\compute.jar -Djava.rmi.server.codebase=file:/c:/jav
a/compute.jar -Djava.rmi.server.hostname=localhost -Djava.security.policy=c:/jav
a/servertest.policy engine.ComputeEngine
ComputeEngine bound

Exception in thread "RMI TCP Connection(idle)" java.security.AccessControlExcept
ion: access denied (java.net.SocketPermission 127.0.0.1:1440 accept,resolve)
        at java.security.AccessControlContext.checkPermission(Unknown Source)
        at java.security.AccessController.checkPermission(Unknown Source)
        at java.lang.SecurityManager.checkPermission(Unknown Source)
        at java.lang.SecurityManager.checkAccept(Unknown Source)
        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.checkAcceptPermi
ssion(Unknown Source)
        at sun.rmi.transport.tcp.TCPTransport.checkAcceptPermission(Unknown Sour
ce)
        at sun.rmi.transport.Transport$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.rmi.transport.Transport.serviceCall(Unknown Source)
        at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Sou
rce)
        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Sour
ce)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source
)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)

_______________________________
CLIENTSIDE ERRORS:
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\STUDENT>cd\

C:\>java -cp c:\java;c:\java\compute.jar -Djava.rmi.server.codebase=file:\C:\jav
a\files\ -Djava.security.policy=c:/java/clienttest.policy client.ComputePi local
host 45

ComputePi exception:
java.rmi.UnmarshalException: Error unmarshaling return header; nested exception
is:
        java.io.EOFException
        at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)
        at sun.rmi.server.UnicastRef.invoke(Unknown Source)
        at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unkn
own Source)
        at java.rmi.server.RemoteObjectInvocationHandler.invoke(Unknown Source)
        at $Proxy0.executeTask(Unknown Source)
        at client.ComputePi.main(ComputePi.java:18)
Caused by: java.io.EOFException
        at java.io.DataInputStream.readByte(Unknown Source)
        ... 6 more

C:\>

提前谢谢佩里