Java UDP网络编程 - 最简单示例-白红宇

Java UDP网络编程 - 最简单示例

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发布时间：2019-06-09

本文共 1969 字，大约阅读时间需要 6 分钟。

/**     *UDPServer     *@author Winty wintys@gmail.com     *@version 2008-12-15     */    import java.io.*;    import java.net.*;    class UDPServer{        public static void main(String[] args)throws IOException{            DatagramSocket  server = new DatagramSocket(5050);            byte[] recvBuf = new byte[100];            DatagramPacket recvPacket                 = new DatagramPacket(recvBuf , recvBuf.length);            server.receive(recvPacket);            String recvStr = new String(recvPacket.getData() , 0 , recvPacket.getLength());            System.out.println("Hello World!" + recvStr);            int port = recvPacket.getPort();            InetAddress addr = recvPacket.getAddress();            String sendStr = "Hello ! I'm Server";            byte[] sendBuf;            sendBuf = sendStr.getBytes();            DatagramPacket sendPacket                 = new DatagramPacket(sendBuf , sendBuf.length , addr , port );            server.send(sendPacket);            server.close();        }    }

/** *UDPClient *@author Winty wintys@gmail.com *@version 2008-12-15 */import java.io.*;import java.net.*;class UDPClient{    public static void main(String[] args)throws IOException{        DatagramSocket client = new DatagramSocket();                String sendStr = "Hello! I'm Client";        byte[] sendBuf;        sendBuf = sendStr.getBytes();        InetAddress addr = InetAddress.getByName("127.0.0.1");        int port = 5050;        DatagramPacket sendPacket             = new DatagramPacket(sendBuf ,sendBuf.length , addr , port);        client.send(sendPacket);        byte[] recvBuf = new byte[100];        DatagramPacket recvPacket            = new DatagramPacket(recvBuf , recvBuf.length);        client.receive(recvPacket);        String recvStr = new String(recvPacket.getData() , 0 ,recvPacket.getLength());        System.out.println("收到:" + recvStr);        client.close();    }}

转载于:https://www.cnblogs.com/GaiDynasty/p/3364383.html

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