java RMI helloworld

首先Spring中整合了RMI：
http://blog.youkuaiyun.com/partner4java/article/details/7285055


然后，我们单独写个helloworld，分为几步
1、接口定义，需要实现Remote
2、实现
3、注册开启
4、调用

具体使用可查看jdk文档

package com.partner4java.demo.rmi;

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

/**
 * 首先定义一个接口<br/>
 * 要实现Remote
 * 
 * @author partner4java
 * 
 */
public interface Hello extends Remote {
	public String sayHello(String name) throws RemoteException;
}


package com.partner4java.demo.rmi;

import java.rmi.AlreadyBoundException;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;

/**
 * 对外提供的服务<br/>
 * 主要有三步：createRegistry、exportObject、bind
 * 
 * @author partner4java
 * 
 */
public class HelloService implements Hello {

	public String sayHello(String name) throws RemoteException {
		System.out.println("hello" + name);
		return "hello" + name;
	}

	public void start() throws RemoteException, AlreadyBoundException {
		// 使用提供的特定端口导出远程对象，以便能够接收传入的调用。
		Hello hello = (Hello) UnicastRemoteObject.exportObject(this, 9001);

		// 返回本地主机在指定 port 上对远程对象 Registry 的引用。
		Registry registry = LocateRegistry.createRegistry(9000);
		registry.bind("Hello", hello);
	}

	public static void main(String[] args) throws RemoteException,
			AlreadyBoundException {
		new HelloService().start();
	}
}


package com.partner4java.demo.rmi;

import java.rmi.NotBoundException;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;

/**
 * 调用
 * 
 * @author partner4java
 * 
 */
public class HelloClient {

	public static void main(String[] args) throws RemoteException,
			NotBoundException {
		Registry registry = LocateRegistry.getRegistry("127.0.0.1", 9000);
		Hello hello = (Hello) registry.lookup("Hello");
		System.out.println(hello.sayHello(" world"));
	}
}