RMI部署，客户端运行出错

Question

我在部署RMI的时候~
start rmiregistry
java -Djava.rmi.server.codebase=http://localhost:8080/server/ ProductServer
这两部都成功了
但是在启动客户端程序
java -Djava.security.policy=client.policy ProductClient
的时候却报错了~好像是连接不上服务器~我想了好久都找不出原因啊 
希望您能给我帮助PS：我电脑上的服务器是tomcat，服务器端文件放在tomcat根目录的server目录下
        client.policy， ProductClient两个文件在同一个目录下
       client.policy的内容是
        grant   { 
permission   java.security.AllPermission; 
}; 再贴上ProductClient的代码import java.rmi.*;
import java.rmi.server.*;
import javax.naming.*;
import java.util.Scanner; 
public class ProductClient 
{ /**
 * @param args
 */

public static void main(String[] args) 
{
// TODO Auto-generated method stub
System.setProperty("java.security.policy", "client.policy");
System.setSecurityManager(new RMISecurityManager());
//System.setProperty("java.rmi.server.codebase", "http://localhost:8080/server/");

String url="rmi://localhost/";
Scanner yn=new Scanner(System.in);
String choice;
try
{
Context namingContext=new InitialContext();
Product c1=(Product)namingContext.lookup(url+"toaster");
Product c2=(Product)namingContext.lookup(url+"microwave");

System.out.println(c1.getDescription());
System.out.println(c2.getDescription());
choice=yn.nextLine();
}
catch(Exception e)
{
e.printStackTrace();
} }}

Answer 1

下面是错误代码
C:\Users\zhujianhui>java -Djava.security.policy=client.policy ProductClient
javax.naming.CommunicationException [Root exception is java.rmi.ConnectIOExcepti
on: error during JRMP connection establishment; nested exception is:
        java.io.EOFException]
        at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java
:101)
        at com.sun.jndi.toolkit.url.GenericURLContext.lookup(GenericURLContext.j
ava:185)
        at javax.naming.InitialContext.lookup(InitialContext.java:392)
        at ProductClient.main(ProductClient.java:27)
Caused by: java.rmi.ConnectIOException: error during JRMP connection establishme
nt; nested exception is:
        java.io.EOFException
        at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:286
)
        at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:184)
        at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:322)
        at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
        at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java
:97)
        ... 3 more
Caused by: java.io.EOFException
        at java.io.DataInputStream.readByte(DataInputStream.java:250)
        at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:228
)
        ... 7 moreC:\Users\zhujianhui>java -Djava.security.policy=client.policy ProductClientd
Exception in thread "main" java.lang.NoClassDefFoundError: ProductClientd
Caused by: java.lang.ClassNotFoundException: ProductClientd
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: ProductClientd.  Program will exit.

Answer 2

client.policy ProductClient是那个包里的？放到class path里面了吗？