Socket優(yōu)化

// 發(fā)送方
public class Demo1_SendSocket {
    public static void main(String[] args) throws IOException {
        Scanner sc = new Scanner(System.in); // 獲取鍵盤輸入流
        DatagramSocket socket = new DatagramSocket(); // 創(chuàng)建socket對象
    
        while (true) {
            String line = sc.nextLine(); // 獲取鍵盤錄入
            if ("quit".equals(line)) { // 如果輸入quit則退出連接
                break;
            }
            DatagramPacket packet = // 創(chuàng)建數(shù)據(jù)包對象
                    new DatagramPacket(line.getBytes(), line.getBytes().length, InetAddress.getByName("127.0.0.1"),
                            6666);
            socket.send(packet); // 發(fā)送數(shù)據(jù)包
        }
        socket.close(); // 關(guān)閉socket對象
    }
}

// 接收方
public class Demo2_ReceiveSocket {
    public static void main(String[] args) throws Exception {
        DatagramSocket socket = new DatagramSocket(6666); // 創(chuàng)建socket連接
        DatagramPacket packet = new DatagramPacket(new byte[1024], 1024);
    
        while (true) {
            socket.receive(packet); // 接收消息
    
            byte[] arr = packet.getData(); // 提取數(shù)據(jù)
            int len = packet.getLength(); // 獲取有效字節(jié)個數(shù)
            String ip = packet.getAddress().getHostAddress(); // 獲取IP地址
            int port = packet.getPort(); // 獲取端口號
            System.out.println(ip + ":" + port + ":" + new String(arr, 0, len));
        }
    }
}