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当我得到这段代码时，我正在阅读 Head First Design Patterns 书：

import java.rmi.*;
import java.rmi.*;

public class GumballMachineTestDrive {

    public static void main(String[] args) {
        GumballMachine gumballMachine = null;
        int count = 0;

        try {
            count = Integer.parseInt(args[1]);
            gumballMachine = new GumballMachine(args[0], count);
            Naming.rebind("//" + args[0] + "/gumballmachine", gumballMachine);
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

正如他们在我运行这段代码之前在书中所说的那样，我确保我有 rmiregisty 运行后台，但是当我写这个时

C:\Users\Vision\Downloads\Desktop\New folder\StateAndProxy\build\classes>java 
gumball.GumballMachineTestDrive santafe.mightygumball.com 100

在命令提示符下我有这个错误

java.rmi.ConnectException: Connection refused to host: santafe.mightygumball.com; nested 
    exception is:
    java.net.ConnectException: Connection timed out: connect
    at java.rmi/sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:623)
    at java.rmi/sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:209)
    at java.rmi/sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:196)
    at java.rmi/sun.rmi.server.UnicastRef.newCall(UnicastRef.java:343)
    at java.rmi/sun.rmi.registry.RegistryImpl_Stub.rebind(RegistryImpl_Stub.java:150)
    at java.rmi/java.rmi.Naming.rebind(Naming.java:177)
    at gumball.GumballMachineTestDrive.main(GumballMachineTestDrive.java:17)
    Caused by: java.net.ConnectException: Connection timed out: connect
    at java.base/sun.nio.ch.Net.connect0(Native Method)
    at java.base/sun.nio.ch.Net.connect(Net.java:493)
    at java.base/sun.nio.ch.Net.connect(Net.java:482)
    at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588)
    at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:339)
    at java.base/java.net.Socket.connect(Socket.java:603)
    at java.base/java.net.Socket.connect(Socket.java:552)
    at java.base/java.net.Socket.<init>(Socket.java:475)
    at java.base/java.net.Socket.<init>(Socket.java:249)
    at 
    java.rmi/sun.rmi.transport.tcp.TCPDirectSocketFactory.createSocket
    (TCPDirectSocketFactory.java:40)
    at java.rmi/sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:617)
    ... 6 more

任何想法有什么问题？

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