RMIServiceExporter 不工作，无法连接到端口 1099 的 RMI 本地主机

Answer 1

我认为如果您删除

registryHost

属性，它将在 1099 上动态创建一个主机，因为还没有一个主机。

<bean class="org.springframework.remoting.rmi.RmiServiceExporter">
    <property name="serviceName" value="spitterService"/>
    <property name="service" ref="spitterService"/>
    <property name="serviceInterface" value="com.spitter.service.SpitterService"/>
    <property name="registryPort" value="1099"/>
</bean>

要么在 1099 上启动 RmiRegistry。

Answer 2

您必须创建

myRmiExporter

并扩展

RMIServiceExporter

然后用这个body来实现这个方法

protected Registry getRegistry(String registryHost, int registryPort,
                                   RMIClientSocketFactory clientSocketFactory, RMIServerSocketFactory serverSocketFactory)
            throws RemoteException
    {

        if (registryHost != null)
        {
            // Host explictly specified: only lookup possible.
            if (logger.isInfoEnabled())
            {
                logger.info("Looking for RMI registry at port '" + registryPort + "' of host [" + registryHost + "]");
            }
            try
            {
                Registry reg = LocateRegistry.getRegistry(registryHost, registryPort, clientSocketFactory);
                testRegistry(reg);
                return reg;
            }
            catch (RemoteException ex)
            {
                logger.debug("RMI registry access threw exception", ex);
                logger.warn("Could not detect RMI registry - creating new one");
                // Assume no registry found -> create new one.
                LocateRegistry.createRegistry(registryPort);
                Registry reg = LocateRegistry.getRegistry(registryHost, registryPort, clientSocketFactory);
                testRegistry(reg);
                return reg;
            }
        }

        else
        {
            return getRegistry(registryPort, clientSocketFactory, serverSocketFactory);
        }
    }

成功了

Answer 3

import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.server.UnicastRemoteObject;
import java.util.Random;
public class GuessingGameServer extends UnicastRemoteObject implements GuessingGameInterface {
    private int num;
    public GuessingGameServer() throws RemoteException {
        super();
        num = new Random().nextInt(100) + 1;
        System.out.println("[Server] Generated number to guess: " + num);
    }
    public String guessNumber(int guess) throws RemoteException {
        System.out.println("[Server] Client guessed: " + guess);
        if (guess == num) {
            return "Correct!";
        } else if (guess < num) {
            return "Too Low!";
        } else {
            return "Too High!";
        }
    }
    public static void main(String[] args) {
        try {
            LocateRegistry.createRegistry(1099);
            System.out.println("[Server] RMI Registry started on port 1099");
            GuessingGameServer game = new GuessingGameServer();
            Naming.rebind("rmi://localhost/GuessingGameService", game);
            System.out.println("[Server] Guessing Game Server is running...");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}