柚子快報(bào)邀請(qǐng)碼778899分享：開發(fā)語言 Java UDP

http://yzkb.51969.com/

接收方

創(chuàng)建DatagramSocket實(shí)例并指定端口。創(chuàng)建DatagramPacket實(shí)例接收信息。調(diào)用DatagramSocket的receive()方法將接收信息并傳遞給DatagramPacket。通過DatagramPacket的getData()方法獲取信息內(nèi)容，getLength()方法獲取長(zhǎng)度。

package io.github.jast90.udp;

import java.net.DatagramPacket;

import java.net.DatagramSocket;

public class MyUdpRecv {

public static void main(String[] args) throws Exception {

DatagramSocket datagramSocket = new DatagramSocket(3000);

byte[] buf = new byte[1024];

DatagramPacket datagramPacket = new DatagramPacket(buf, 1024);

datagramSocket.receive(datagramPacket);

System.out.println(new String(datagramPacket.getData(),0,datagramPacket

.getLength()));

datagramSocket.close();

}

}

發(fā)送方

創(chuàng)建DatagramSocket實(shí)例。創(chuàng)建信息。創(chuàng)建DatagramPacket實(shí)例并指定信息、信息長(zhǎng)度、接收方ip地址及接收方端口。調(diào)用DatagramSocket的send()方法發(fā)送DatagramPacket。

package io.github.jast90.udp;

import java.net.DatagramPacket;

import java.net.DatagramSocket;

import java.net.InetAddress;

public class MyUdpSend {

public static void main(String[] args) throws Exception {

DatagramSocket datagramSocket = new DatagramSocket();

String msg = "hello world";

DatagramPacket datagramPacket = new DatagramPacket(msg.getBytes(), msg.length(),

InetAddress.getByName("127.0.0.1"), 3000);

datagramSocket.send(datagramPacket);

datagramSocket.close();

}

}

柚子快報(bào)邀請(qǐng)碼778899分享：開發(fā)語言 Java UDP

http://yzkb.51969.com/

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