1：文件Service.java ServiceImpl.java ServiceServer.java ServiceClient.java? client.policy

結構
?src
??? net.loocky.rmi/ *.java
??? client.policy

文件如下：
Service.java是個interface
package net.loocky.rmi;

import java.rmi.Remote;
import java.rmi.RemoteException;

public interface Service extends Remote {

?public String getName() throws RemoteException;

?public void setName(String name) throws RemoteException;

}
ServiceImpl.java Service的實現
package net.loocky.rmi;

import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;

public class ServiceImpl extends UnicastRemoteObject implements Service {
?private static final long serialVersionUID = 1L;

?private String name;

?public ServiceImpl(String name) throws RemoteException {
??this.name = name;
?}

?public String getName() throws RemoteException {
??return name;
?}

?public void setName(String name) throws RemoteException {
??this.name = name;

?}

}

ServiceServer
package net.loocky.rmi;

import java.rmi.Naming;

public class ServiceServer {

?/**
? * @param args
? */
?public static void main(String[] args) {
??try {

???ServiceImpl s1 = new ServiceImpl("my name is john");
???ServiceImpl s2 = new ServiceImpl("my name is loocky");
???Naming.rebind("john", s1);
???Naming.rebind("loocky", s2);
???System.out.println("waiting for clients...");
??} catch (Exception e) {
???e.printStackTrace();
??}

?}

}
ServiceClient
package net.loocky.rmi;

import java.rmi.Naming;
import java.rmi.RMISecurityManager;

public class ServiceClient {

?/**
? * @param args
? */
?public static void main(String[] args) {
??System.setSecurityManager(new RMISecurityManager());
??String url = "rmi://127.0.0.1:1099/";
??try {
???Service s1 = (Service) Naming.lookup(url + "john");
???Service s2 = (Service) Naming.lookup(url + "loocky");
???System.out.println(s1.getName());
???s2.setName("my name is not loocky");
???System.out.println(s2.getName());

??} catch (Exception e) {
???e.printStackTrace();
??}
?}

}
client.policy
grant
{
? permission java.security.AllPermission;
//　permission java.net.SocketPermission　"127.0.0.1:1099","connect";
//　permission java.net.SocketPermission　"127.0.0.1:80","connect";
};

有了這些文件下面要做的事情是

1:進入bin/? rmic net.loocky.rmi.ServiceImpl 生成STUB
2：dos下面 rmiregistry
3：java net.loocky.rmi.ServiceServer
4: java -Djava.security.policy=client.policy net.loocky.rmi.ServiceClient
5:查看控制臺的結果吧！