java socket编程例子

下面是一个简单的 Java Socket 编程例子：

服务端代码：

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

public class Server {
    public static void main(String[] args) throws IOException {
        ServerSocket serverSocket = new ServerSocket(8888);
        System.out.println("服务器已启动，等待客户端连接...");

        Socket socket = serverSocket.accept();
        System.out.println("客户端已连接，客户端地址：" + socket.getInetAddress().getHostAddress());

        BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        String line;
        while ((line = reader.readLine()) != null) {
            System.out.println("客户端说：" + line);
        }

        reader.close();
        socket.close();
        serverSocket.close();
    }
}

客户端代码：

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

public class Client {
    public static void main(String[] args) throws IOException {
        Socket socket = new Socket("localhost", 8888);
        System.out.println("已连接服务器，服务器地址：" + socket.getInetAddress().getHostAddress());

        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()), true);

        String line;
        while ((line = reader.readLine()) != null) {
            writer.println(line);
        }

        writer.close();
        reader.close();
        socket.close();
    }
}