perfecttime.java

通过RMI实现远程调用一个JAVA小程序

import java.net.*;
import java.rmi.*;
import java.rmi.server.*;
import java.rmi.registry.*;
import java.net.*;

public class PerfectTime extends UnicastRemoteObject implements PerfectTimeI {

  //接口的实现
  // 返回服务器端的当前精确时间
  public long getPerfectTime() throws RemoteException {

    return System.currentTimeMillis();
  }

  // 必须实现构造函数以抛出RemoteException异常
  public PerfectTime() throws RemoteException {
  }

  // 向RMI注册服务,以便客户端查找
  public static void main(String[] args) throws Exception {
    // 创建提供注册服务的本地对象,参数为端口号
    // 也可以在Dos窗口下,执行start rmiregistry port启动此服务
    LocateRegistry.createRegistry(2005);
    PerfectTime pt = new PerfectTime();
    // 注册把PerfectTime注册到机器192.8.200.27,端口2005,名为PerfectTime
    Naming.bind("//192.8.200.27:2005/PerfectTime", pt);
    System.out.println("Ready to do time");
  }
}