java - 带有 2 台计算机的 java 聊天客户端服务器

Question

这是客户端的代码

import java.io.*;
import java.net.*;
import java.util.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class SimpleChatClient {
    JTextArea incoming;
    JTextField outgoing;
    BufferedReader reader;
    PrintWriter writer;
    Socket sock;
    public static void main(String[] args) {
        SimpleChatClient client = new SimpleChatClient();
        client.go();
    }
    public void go() {
        JFrame frame = new JFrame("Ludicrously Simple Chat Client");
        JPanel mainPanel = new JPanel();
        incoming = new JTextArea(15,50);
        incoming.setLineWrap(true);
        incoming.setWrapStyleWord(true);
        incoming.setEditable(false);
        JScrollPane qScroller = new JScrollPane(incoming);
        qScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
        qScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
        outgoing = new JTextField(20);
        JButton sendButton = new JButton("Send");
        sendButton.addActionListener(new SendButtonListener());
        mainPanel.add(qScroller);
        mainPanel.add(outgoing);
        mainPanel.add(sendButton);
        setUpNetworking();
        Thread readerThread = new Thread(new IncomingReader());
        readerThread.start();
        frame.getContentPane().add(BorderLayout.CENTER, mainPanel);
        frame.setSize(400,500);
        frame.setVisible(true);
    }
    private void setUpNetworking() {
        try {
            sock = new Socket("127.0.0.1", 5000);
            InputStreamReader streamReader = new InputStreamReader(sock.getInputStream());
            reader = new BufferedReader(streamReader);
            writer = new PrintWriter(sock.getOutputStream());
            System.out.println("networking established");
        } catch(IOException ex) {
            ex.printStackTrace();
        }
    } // close setUpNetworking
    public class SendButtonListener implements ActionListener {
        public void actionPerformed(ActionEvent ev) {
            try {
                writer.println(outgoing.getText());
                writer.flush();
            } catch(Exception ex) {
                ex.printStackTrace();
            }
            outgoing.setText("");
            outgoing.requestFocus();
        }
    } // close inner class
    public class IncomingReader implements Runnable {
        public void run() {
            String message;
            try {
                while ((message = reader.readLine()) != null) {
                    System.out.println("read " + message);
                    incoming.append(message + "\n");
                } // close while
} catch(Exception ex) {ex.printStackTrace();}
        } // close run
    } // close inner class
}

这是服务器的代码

import java.io.*;
import java.net.*;
import java.util.*;
public class VerySimpleChatServer {
    ArrayList clientOutputStreams;
    public class ClientHandler implements Runnable {
        BufferedReader reader;
        Socket sock;
        public ClientHandler(Socket clientSocket) {
            try {
                sock = clientSocket;
                InputStreamReader isReader = new InputStreamReader(sock.getInputStream());
                reader = new BufferedReader(isReader);
} catch(Exception ex) {ex.printStackTrace();}
        } // close constructor
        public void run() {
            String message;
            try {
                while ((message = reader.readLine()) != null) {
                    System.out.println("read " + message);
                    tellEveryone(message);
                } // close while
} catch(Exception ex) {ex.printStackTrace();}
        } // close run
    } // close inner class
    public static void main (String[] args) {
        new VerySimpleChatServer().go();
    }
    public void go() {
        clientOutputStreams = new ArrayList();
        try {
            ServerSocket serverSock = new ServerSocket(5000);
            while(true) {
                Socket clientSocket = serverSock.accept();
                PrintWriter writer = new PrintWriter(clientSocket.getOutputStream());
                clientOutputStreams.add(writer);
                Thread t = new Thread(new ClientHandler(clientSocket));
                t.start();
                System.out.println("got a connection");
            }
        } catch(Exception ex) {
            ex.printStackTrace();
        }
    } // close go
    public void tellEveryone(String message) {
        Iterator it = clientOutputStreams.iterator();
        while(it.hasNext()) {
            try {
                PrintWriter writer = (PrintWriter) it.next();
                writer.println(message);
                writer.flush();
            } catch(Exception ex) {
                ex.printStackTrace();
            }
        } // end while
    } // close tellEveryone
} // close class

当我在一台计算机上运行服务器并在另一台计算机上使用服务器计算机的 IP 地址而不是 127.0.0.1 运行客户端时，我得到连接重置异常，对此有什么帮助吗？

这是我得到的例外

networking established
java.net.SocketException: Connection reset
        at java.net.SocketInputStream.read(Unkno
        at java.net.SocketInputStream.read(Unkno
        at sun.nio.cs.StreamDecoder.readBytes(Un
        at sun.nio.cs.StreamDecoder.implRead(Unk
        at sun.nio.cs.StreamDecoder.read(Unknown
        at java.io.InputStreamReader.read(Unknow
        at java.io.BufferedReader.fill(Unknown S
        at java.io.BufferedReader.readLine(Unkno
        at java.io.BufferedReader.readLine(Unkno
        at SimpleChatClient$IncomingReader.run(S
        at java.lang.Thread.run(Unknown Source)

我应该补充一点，如果我在自己的计算机上同时运行服务器和客户端并输入我自己的 IP 地址而不是 127.0.0.1，它就可以工作