import java.io.*;import java.net.*;public class SocketClient { public static void main(String[] args) { try { // 创建Socket客户端并连接到服务器 Socket socket = new Socket("localhost", 9999); // 获取输出流并发送数据到服务器 OutputStream os = socket.getOutputStream(); OutputStreamWriter osw = new OutputStreamWriter(os); BufferedWriter bw = new BufferedWriter(osw); String message = "Hello from SocketClient!"; bw.write(message); bw.flush(); System.out.println("Message sent to the server: " + message); // 关闭连接 bw.close(); osw.close(); os.close(); socket.close(); } catch (Exception e) { e.printStackTrace(); } }} 这段代码对应的本地Socket服务器，用代码展示

以下是对应的本地Socket服务器代码示例：

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

public class SocketServer {
    public static void main(String[] args) {
        try {
            // 创建ServerSocket对象并监听9999端口
            ServerSocket serverSocket = new ServerSocket(9999);
            System.out.println("Waiting for client connection...");

            // 等待客户端连接
            Socket socket = serverSocket.accept();

            // 获取输入流并读取客户端发送的数据
            InputStream is = socket.getInputStream();
            InputStreamReader isr = new InputStreamReader(is);
            BufferedReader br = new BufferedReader(isr);
            char[] buf = new char[1024];
            int len = br.read(buf);
            String message = new String(buf, 0, len);
            System.out.println("Message received from the client: " + message);

            // 关闭连接
            br.close();
            isr.close();
            is.close();
            socket.close();
            serverSocket.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

该服务器代码会监听9999端口，等待客户端连接。一旦有客户端连接，就会获取客户端发送的数据并打印出来，然后关闭连接。