我正在学习Java
RMI，并且创建了一个非常简单的服务器来计算斐波那契数。服务器（FibonacciServer）创建一个负责计算序列的对象（Fibonacci），并且该对象实现接口（IFibonacci）：

FibonacciServer.java：

package myrmifibonacciserver;

import java.net.MalformedURLException;
import java.rmi.Naming;
import java.rmi.RemoteException;

public class FibonacciServer {
    public static void main(String args[]){
        try{
            Fibonacci fib = new Fibonacci();
            Naming.rebind("fibonacci", fib);
            System.out.println("Fibonacci Server ready.");
        }catch(RemoteException rex){
            System.err.println("Exception in Fibonacci.main " + rex);
        } catch (MalformedURLException ex) {
            System.err.println("MalformedURLException " + ex);
        }
    }
}

斐波那契

package myrmifibonacciserver;

import java.math.BigInteger;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;

public class Fibonacci extends UnicastRemoteObject implements IFibonacci{

    private static final long serialVersionUID = -4300545841720809981L;

    public Fibonacci() throws RemoteException{
        super();
    }

    @Override
    public BigInteger getFibonacci(int n) throws RemoteException {
        return getFibonacci(new BigInteger(Long.toString(n)));
    }

    @Override
    public BigInteger getFibonacci(BigInteger n) throws RemoteException {
        System.out.println("Calculating teh " + n + "th Fibonacci number");
        BigInteger zero = BigInteger.ZERO;
        BigInteger one = BigInteger.ONE;

        if(n.equals(zero) || n.equals(one)) 
            return one;

        BigInteger current = one;
        BigInteger low = one;
        BigInteger high = one;
        BigInteger temp;

        while(current.compareTo(n) == -1){
            temp = high;
            high = high.add(low);
            low = temp;
            current = current.add(one);
        }
        return high;
    }

}

IFibonacci：

package myrmifibonacciserver;

import java.math.BigInteger;
import java.rmi.Remote;
import java.rmi.RemoteException;

public interface IFibonacci extends Remote{
    public BigInteger getFibonacci(int n) throws RemoteException;
    public BigInteger getFibonacci(BigInteger n) throws RemoteException;
}

如您所见，这是一个非常基本的示例。我正在使用命令在Linux上启动RMI注册表rmiregistry &，它启动没有问题。

但是，当我单击运行按钮（在Eclipse或Netbeans中）运行我的小项目时，出现错误：

Exception in Fibonacci.main java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
    java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
    java.lang.ClassNotFoundException: myrmifibonacciserver.IFibonacci

而且我不知道为什么！起初我以为是因为存根，但是由于我使用的是Java 1.7，所以它们是自动创建的。我究竟做错了什么 ？