TCP one-to-one chat

Language 2023-12-16 18:17:53 views: null

client

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;

import javax.swing.JButton;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class ClientSocketFrame extends JFrame {
    private PrintWriter writer; // 声明PrintWriter类对象
    private BufferedReader reader; // 声明BufferedReader对象
    private Socket socket; // 声明Socket对象
    private JTextArea ta_info; // 创建JtextArea对象
    private JTextField tf_send; // 创建JtextField对象
    private void connect() { // 连接套接字方法
        ta_info.append("尝试连接......\n"); // 文本域中信息信息
        try { // 捕捉异常
            socket = new Socket("127.0.0.1", 1978); // 实例化Socket对象
            while (true) {
                writer = new PrintWriter(socket.getOutputStream(), true);
                reader = new BufferedReader(new InputStreamReader(socket
                        .getInputStream())); // 实例化BufferedReader对象
                ta_info.append("完成连接。\n"); // 文本域中提示信息
                getServerInfo();
            }
        } catch (Exception e) {
            e.printStackTrace(); // 输出异常信息
        }
    }
    
    public static void main(String[] args) { // 主方法
        ClientSocketFrame clien = new ClientSocketFrame(); // 创建本例对象
        clien.setVisible(true); // 将窗体显示
        clien.connect(); // 调用连接方法
    }
    
    private void getServerInfo() {
        try {
            while (true) {
                if (reader != null) {
                    String line = reader.readLine();// 读取服务器发送的信息
                    if (line != null)
                        ta_info.append("接收到服务器发送的信息：" + line + "\n"); // 显示服务器端发送的信息
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (reader != null) {
                    reader.close();// 关闭流
                }
                if (socket != null) {
                    socket.close(); // 关闭套接字
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    
    /**
     * Create the frame
     */
    public ClientSocketFrame() {
        super();
        setTitle("客户端程序");
        setBounds(100, 100, 361, 257);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        final JPanel panel = new JPanel();
        getContentPane().add(panel, BorderLayout.NORTH);

        final JLabel label = new JLabel();
        label.setForeground(new Color(0, 0, 255));
        label.setFont(new Font("", Font.BOLD, 22));
        label.setText("一对一通信——客户端程序");
        panel.add(label);

        final JPanel panel_1 = new JPanel();
        getContentPane().add(panel_1, BorderLayout.SOUTH);

        final JLabel label_1 = new JLabel();
        label_1.setText("客户端发送的信息：");
        panel_1.add(label_1);

        tf_send = new JTextField();
        tf_send.setPreferredSize(new Dimension(140, 25));
        panel_1.add(tf_send);

        final JButton button = new JButton();
        button.addActionListener(new ActionListener() {
            public void actionPerformed(final ActionEvent e) {
                writer.println(tf_send.getText()); // 将文本框中信息写入流
                ta_info.append("客户端发送的信息是：" + tf_send.getText()
                        + "\n"); // 将文本框中信息显示在文本域中
                tf_send.setText(""); // 将文本框清空
            }
        });
        button.setText("发  送");
        panel_1.add(button);

        final JScrollPane scrollPane = new JScrollPane();
        getContentPane().add(scrollPane, BorderLayout.CENTER);

        ta_info = new JTextArea();
        scrollPane.setViewportView(ta_info);
        //
    }
    
}

Server 

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.net.*;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class ServerSocketFrame extends JFrame {
    private JTextField tf_send;
    private JTextArea ta_info;
    private PrintWriter writer; // 声明PrintWriter类对象
    private BufferedReader reader; // 声明BufferedReader对象
    private ServerSocket server; // 声明ServerSocket对象
    private Socket socket; // 声明Socket对象socket
    
    public void getServer() {
        try {
            server = new ServerSocket(1978); // 实例化Socket对象
            ta_info.append("服务器套接字已经创建成功\n"); // 输出信息
            while (true) { // 如果套接字是连接状态
                ta_info.append("等待客户机的连接......\n"); // 输出信息
                socket = server.accept(); // 实例化Socket对象
                reader = new BufferedReader(new InputStreamReader(socket
                        .getInputStream())); // 实例化BufferedReader对象
                writer = new PrintWriter(socket.getOutputStream(), true);
                getClientInfo(); // 调用getClientInfo()方法
            }
        } catch (Exception e) {
            e.printStackTrace(); // 输出异常信息
        }
    }
    
    private void getClientInfo() {
        try {
            while (true) {
                String line = reader.readLine();// 读取客户端发送的信息
                if (line != null)
                    ta_info.append("接收到客户机发送的信息：" + line + "\n"); // 显示客户端发送的信息
            }
        } catch (Exception e) {
            ta_info.append("客户端已退出。\n"); // 输出异常信息
        } finally {
            try {
                if (reader != null) {
                    reader.close();// 关闭流
                }
                if (socket != null) {
                    socket.close(); // 关闭套接字
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    
    public static void main(String[] args) { // 主方法
        ServerSocketFrame frame = new ServerSocketFrame(); // 创建本类对象
        frame.setVisible(true);
        frame.getServer(); // 调用方法
    }
    
    public ServerSocketFrame() {
        super();
        setTitle("服务器端程序");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 379, 260);
        
        final JScrollPane scrollPane = new JScrollPane();
        getContentPane().add(scrollPane, BorderLayout.CENTER);
        
        ta_info = new JTextArea();
        scrollPane.setViewportView(ta_info);
        
        final JPanel panel = new JPanel();
        getContentPane().add(panel, BorderLayout.SOUTH);
        
        final JLabel label = new JLabel();
        label.setText("服务器发送的信息：");
        panel.add(label);
        
        tf_send = new JTextField();
        tf_send.setPreferredSize(new Dimension(150, 25));
        panel.add(tf_send);

        final JButton button = new JButton();
        button.addActionListener(new ActionListener() {
            public void actionPerformed(final ActionEvent e) {
                writer.println(tf_send.getText()); // 将文本框中信息写入流
                ta_info.append("服务器发送的信息是：" + tf_send.getText() + "\n"); // 将文本框中信息显示在文本域中
                tf_send.setText(""); // 将文本框清空
            }
        });
        button.setText("发  送");
        panel.add(button);

        final JPanel panel_1 = new JPanel();
        getContentPane().add(panel_1, BorderLayout.NORTH);

        final JLabel label_1 = new JLabel();
        label_1.setForeground(new Color(0, 0, 255));
        label_1.setFont(new Font("", Font.BOLD, 22));
        label_1.setText("一对一通信——服务器端程序");
        panel_1.add(label_1);
    }
}

Results display

 The second type

client

 
 
import java.io.*;
import java.net.Socket;
import java.util.Scanner;
 
/**
 * Socket客户端
 **/
public class SocketClient {
    public static void main(String[] args) {
        Socket s = null;
        try {
            // 与ip为127.0.0.1、端口为12345的服务端建立连接
            s = new Socket("127.0.0.1", 12345);
 
            // 创建输入流接收服务端发送的消息（字节流）
            InputStream is = s.getInputStream();
            // 将服务端返回的字节流转化为字符流
            InputStreamReader isr = new InputStreamReader(is);
            // 创建字符流读取缓冲区，方便每行读取
            BufferedReader br = new BufferedReader(isr);
 
            // 创建输出流返回消息
            OutputStream os = s.getOutputStream();
            // 创建输出流缓冲
            PrintWriter pw = new PrintWriter(os);
 
            // 创建发送消息的线程
            Runnable rOut = () -> {
                boolean flag = true;
                while (flag) {
                    try {
                        // 接收控制台输入
                        Scanner scan = new Scanner(System.in);
                        String msg = scan.nextLine();
                        // 将输入写入缓冲
                        pw.println(msg);
                        // 将缓冲内的数据推送至服务端并清空缓冲区
                        pw.flush();
                    } catch (Exception e) {
                        flag = false;
                        e.printStackTrace();
                    }
                }
            };
 
            // 创建接收消息的线程
            Runnable rIn = () -> {
                boolean flag = true;
                while (flag) {
                    try {
                        // 逐行读取服务端返回的消息并打印
                        String str = br.readLine();
                        System.out.println("服务端的消息：" + str);
                    } catch (IOException e) {
                        flag = false;
                        e.printStackTrace();
                    }
                }
            };
 
            // 启动两个线程
            Thread tOut = new Thread(rOut);
            Thread tIn = new Thread(rIn);
            tOut.start();
            tIn.start();
        }catch (IOException e) {
            try {
                // 释放资源
                s.close();
            } catch (Exception exception) {
                exception.printStackTrace();
            }
            e.printStackTrace();
        }
    }
}

Server

 
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;
 
/**
 * Socket服务端
 **/
public class SocketServer {
    public static void main(String[] args) {
        ServerSocket ss = null;
        Socket s = null;
        try {
            // 创建监听端口为12345的Socket服务端
            ss = new ServerSocket(12345);
            System.out.println("服务端Socket服务已建立，等待客户端连接...");
            // 通过ss.accept()开始持续监听12345端口，当有连接时获取收到的包装成Socket的客户端对象
            s = ss.accept();
            // 获取客户端的IP地址和端口号
            String ip = s.getInetAddress().getHostAddress();
            int port = s.getPort();
            System.out.println("服务端与 " + ip + ":" + port + " 已建立连接");
 
            // 创建输入流接收客户端发送的消息（字节流）
            InputStream is = s.getInputStream();
            // 将客户端发送的字节流转化为字符流
            InputStreamReader isr = new InputStreamReader(is);
            // 创建字符流读取缓冲区，方便每行读取
            BufferedReader br = new BufferedReader(isr);
 
            // 创建输出流返回消息
            OutputStream os = s.getOutputStream();
            // 创建输出流缓冲
            PrintWriter pw = new PrintWriter(os);
 
            // 创建接受信息的线程
            Runnable rIn = () -> {
                boolean flag = true;
                while (flag) {
                    try {
                        // 逐行读取客户端发送的消息并打印
                        String str = br.readLine();
                        System.out.println("客户端的消息：" + str);
                    } catch (IOException e) {
                        flag = false;
                        e.printStackTrace();
                    }
                }
            };
 
            // 创建发送消息的线程
            Runnable rOut = () -> {
                boolean flag = true;
                while (flag) {
                    try {
                        // 接收控制台输入
                        Scanner scan = new Scanner(System.in);
                        String msg = scan.nextLine();
                        // 将输入写入缓冲
                        pw.println(msg);
                        // 将缓冲内的数据推送至客户端并清空缓冲区
                        pw.flush();
                    } catch (Exception e) {
                        flag = false;
                        e.printStackTrace();
                    }
                }
            };
 
            // 开启两个线程
            Thread tIn = new Thread(rIn);
            Thread tOut = new Thread(rOut);
            tIn.start();
            tOut.start();
        } catch (IOException e) {
            try {
                // 释放资源
                ss.close();
                s.close();
            } catch (Exception exception) {
                exception.printStackTrace();
            }
            e.printStackTrace();
        }
    }
}

result

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Origin blog.csdn.net/Leonie1/article/details/134873758
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