HeadFirst设计模式之RMI介绍

一、使用步骤

1.generate stubs and skeletons：Run rmic on the remote implementation class

如：D:WorkspacesMyEclipse10HeadFirstDesignPatternin>rmic headfirst.designpatterns.rmi.MyRemoteImpl

2.Bring up a terminal and start the rmiregistry

例如：D:WorkspacesMyEclipse10HeadFirstDesignPatternin>rmiregistry

3.start the service：Bring up another terminal and start your service

在MyEclipse中执行service的main方法

4.执行client的main方法

 

二、代码实现

1.

package headfirst.designpatterns.rmi;

import java.rmi.*;
public interface MyRemote extends Remote {
    public String sayHello() throws RemoteException;
}

2.

package headfirst.designpatterns.rmi;

import java.rmi.*;
import java.rmi.server.*;

//Extending UnicastRemoteObject is the
public class MyRemoteImpl extends UnicastRemoteObject implements MyRemote {
    //Be sure arguments and return values are primitives or Serializable
    public String sayHello() {
        return "Server says, ‘Hey’";
    }

    public MyRemoteImpl() throws RemoteException {}

    public static void main(String[] args) {
        try {
            MyRemote service = new MyRemoteImpl();
            Naming.rebind("RemoteHello", service);
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

3.

package headfirst.designpatterns.rmi;

import java.rmi.*;

public class MyRemoteClient {
    public static void main(String[] args) {
        new MyRemoteClient().go();
    }

    public void go() {
        try {
            MyRemote service = (MyRemote) Naming.lookup("rmi://127.0.0.1/RemoteHello");
            String s = service.sayHello(); System.out.println(s);
        }catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

三、结果