java 远程方法调用

1.编写远程方法接口

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

public interface MyRemote extends Remote{
       public String sayHello(int year) throws RemoteException;

}

2.编写实现类

import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
import com.XXX.RemoteInterface.MyRemote;

/*java version "1.7.0_80"
 *Java(TM) SE Runtime Environment (build 1.7.0_80-b15)
 *Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)
 *远程服务实现
 */
@SuppressWarnings("serial")

public class MyRemoteImpl extends UnicastRemoteObject implements MyRemote{

public String sayHello(int year) throws RemoteException {
return "I invoking this Method names sayHello() in "+year;
}
//此处为空的构造方法
public MyRemoteImpl() throws RemoteException { }

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

}

3.编写客户端调用方法

import java.rmi.Naming;
import com.XXX.RemoteInterface.MyRemote;

/*
 * 调用远程服务
 */
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/MyRemote/RemoteHello");
      String s = service.sayHello(2018);
      System.out.println(s);
  } catch (Exception e) {
      e.printStackTrace();
  }
     }

}

3.1 打开cmd . cd 定位到项目classes 目录运行 rmic com.XXX.Remote.MyRemoteImpl 生成 MyRemoteImpl_Stub.class
3.2 cmd 里在 classes目录下 执行 rmiregistry命令

3.3 启动 MyRemoteImpl 的 main()方法;

3.4 启动MyRemoteClient  的 main()方法;

控制台打印:“I invoking this Method names sayHello() in 2018”

远程方法调用成功