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:\Workspaces\MyEclipse10\HeadFirstDesignPattern\bin>rmic headfirst.designpatterns.rmi.MyRemoteImpl

2.Bring up a terminal and start the rmiregistry

例如：D:\Workspaces\MyEclipse10\HeadFirstDesignPattern\bin>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