用JAVA基于SOCKET的局域网实现一对一通信

好的，下面是一个基于 SOCKET 的局域网一对一通信的 JAVA 代码示例：

服务端代码：

import java.io.*;
import java.net.*;

public class Server {
    public static void main(String[] args) {
        try {
            ServerSocket serverSocket = new ServerSocket(9999);
            System.out.println("服务端已启动，等待客户端连接...");
            Socket socket = serverSocket.accept();
            System.out.println("客户端已连接：" + socket.getInetAddress().getHostAddress());

            BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            PrintWriter writer = new PrintWriter(socket.getOutputStream(), true);

            while (true) {
                String message = reader.readLine();
                if (message == null) {
                    break;
                }
                System.out.println("客户端说：" + message);
                writer.println("服务端已收到消息：" + message);
            }

            reader.close();
            writer.close();
            socket.close();
            serverSocket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

客户端代码：

import java.io.*;
import java.net.*;

public class Client {
    public static void main(String[] args) {
        try {
            Socket socket = new Socket("localhost", 9999);

            BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            PrintWriter writer = new PrintWriter(socket.getOutputStream(), true);

            BufferedReader consoleReader = new BufferedReader(new InputStreamReader(System.in));

            while (true) {
                System.out.print("请输入消息：");
                String message = consoleReader.readLine();
                writer.println(message);
                String response = reader.readLine();
                System.out.println("服务端说：" + response);
            }

            //reader.close();
            //writer.close();
            //socket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

以上是一个简单的基于 SOCKET 的局域网一对一通信的 JAVA 代码示例。在实际开发过程中，还需要考虑异常处理、线程安全、协议设计等问题，并根据具体需求进行功能扩展。