网络编程：JavaSocket和ServerSocket在通信中的应用案例-蒲公英云

网络编程：JavaSocket和ServerSocket在通信中的应用案例

原创 - 日理万妓 2024-12-13 02:30 75阅读 0赞

Java Socket和ServerSocket在网络编程中扮演着重要的角色，主要应用于客户端与服务器之间的数据交互。以下是一个简单的应用案例：

客户端（使用Socket）

import java.io.*;
import java.net.*;
public class Client {
    public static void main(String[] args) {
        try {
            // 创建Socket对象
            Socket socket = new Socket("localhost", 1234); // "localhost" 是服务器的IP地址
            // 获取数据输出流
            DataOutputStream out = new DataOutputStream(socket.getOutputStream());
            // 发送字符串数据
            String message = "Hello, Server!";
            byte[] bytes = message.getBytes();
            out.write(bytes);
            // 关闭流和Socket
            out.close();
            socket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

服务器（使用ServerSocket）

import java.io.*;
import java.net.*;
public class Server {
    public static void main(String[] args) throws IOException {
        // 创建ServerSocket对象，绑定到特定端口
        ServerSocket server = new ServerSocket(1234); // "localhost" 的1234端口
        System.out.println("Server is listening on port 1234...");
        // 等待客户端连接请求
        Socket client = server.accept();
        System.out.println("Client connected from IP: " + client.getInetAddress().getHostAddress());
        DataInputStream in = new DataInputStream(client.getInputStream()));
        DataOutputStream out = new DataOutputStream(client.getOutputStream()));
        // 读取并打印客户端发送的数据
        byte[] messageBytes = new byte[1024];
        int bytesRead = in.read(messageBytes);
        if (bytesRead > 0) {
            String receivedMessage = new String(messageBytes, 0, bytesRead));
            System.out.println("Received message from client: " + receivedMessage);
            // 向客户端发送确认信息
            out.writeBoolean(true);
            out.writeUTF("Server acknowledged your message!");
        } else {
            System.out.println("No data received from client.");
        }
        // 关闭输入流、输出流和Socket连接
        in.close();
        out.close();
        client.close();
    }
}