Java实现socket编程入门

最新推荐文章于 2021-06-04 12:54:24 发布

原创最新推荐文章于 2021-06-04 12:54:24 发布 · 1.8k 阅读

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这个博客展示了如何使用Java的Bio包创建一个简单的TCP服务器和客户端。服务器监听9999端口，接收客户端连接并读取输入，然后回显接收到的数据。客户端则连接到服务器，发送用户输入并打印服务器的响应。这是一个基础的网络通信示例。

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package bio;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;

public class TCPserver {
    public static void main(String[] args) throws IOException {
        ServerSocket ss = new ServerSocket(9999);
        while(true){
            Socket socket = ss.accept();
            InputStream in = socket.getInputStream();
            byte[] bytes = new byte[1024];
            in.read(bytes);

            String cip = socket.getInetAddress().getHostAddress();
            System.out.println(cip + " say: " + new String(bytes).trim());

            OutputStream out = socket.getOutputStream();
            Scanner sc = new Scanner(System.in);
            System.out.print("请输入：");
            out.write(sc.nextLine().getBytes());
            socket.close();
        }
    }
}

package bio;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.util.Scanner;

public class TcpClient {
    public static void main(String[] args) throws IOException {
        while (true){
            Socket socket = new Socket("127.0.0.1",9999);
            OutputStream out = socket.getOutputStream();
            System.out.print("请输入：");
            Scanner sc = new Scanner(System.in);
            out.write(sc.nextLine().getBytes());
            InputStream in = socket.getInputStream();
            byte[] bytes = new byte[1024];
            in.read(bytes);
            System.out.println(socket.getInetAddress().getHostAddress() + " : " + new String(bytes).trim());
            socket.close();

        }
    }
}