Java RMI

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Java RMI 远程过程调用，客户端和服务器端的实现

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package syh.com.rmi.test;

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

public interface RmiSample extends Remote {
    public int sum(int a, int b) throws RemoteException;

    public String say() throws RemoteException;
}

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package syh.com.rmi.test;
import java.rmi.Naming;
import java.rmi.RemoteException;
//import com.robin.demo.rmi.interf.RmiSample;

public class RmiSampleClient {
    /**
     * @param args
     */
    public static void main(String[] args) {
        try {
           String url = "//localhost:8809/SAMPLE-SERVER";
            RmiSample RmiObject = (RmiSample) Naming.lookup(url);
           while(true){
                System.out.println(" 1 + 2 = " + RmiObject.sum(1, 2));
                System.out.println(RmiObject.say());
           }
        } catch (RemoteException rex) {
            System.out.println("Error in lookup: " + rex.toString());
        } catch (java.net.MalformedURLException me) {
            System.out.println("Malformed URL: " + me.toString());
        } catch (java.rmi.NotBoundException ne) {
            System.out.println("NotBound: " + ne.toString());
        }
    }
}

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package syh.com.rmi.test;

import java.net.MalformedURLException;
import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
//import com.robin.demo.rmi.impl.RmiSampleImpl;

public class RmiSampleServer {

    /**
     * @param args
     */
    public static void main(String[] args) {
        try{
            LocateRegistry.createRegistry(8809);
            RmiSampleImpl server= new RmiSampleImpl("Hello,Shi Yan Hua!!!");
            Naming.rebind("//localhost:8809/SAMPLE-SERVER" , server);
            System.out.println("Hello Server is ready.");
        }catch (MalformedURLException me){
            System.out.println("Malformed URL: " + me.toString());
            //System.out.println("Hello Server failed: " + e);
        }catch(RemoteException re){
            System.out.println("Remote Exception: "+re.toString());
        }
    }
}
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package syh.com.rmi.test;

import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
//import com.robin.demo.rmi.interf.RmiSample;

public class RmiSampleImpl extends UnicastRemoteObject implements RmiSample {
    /**
     *
     */
    private static final long serialVersionUID = 2742977636753958461L;
    public RmiSampleImpl(String mes) throws RemoteException {
        message = mes;
    }

    public int sum(int a, int b) throws RemoteException {
        return a + b;
    }

    public String say() throws RemoteException {
       System.out.println("Called by HelloClient");
        return message;
    }

    private String message;
}

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