sendpack.java

此段JAVA程序的功能是利用SOCKET编程实现两太计算机之间的通信

package com.an;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.util.Timer;
import java.util.TimerTask;

public class SendPack extends TimerTask {
	private int count = 0;
		/**
	 * 发送数据包
	 * 
	 * @throws IOException
	 */

	public void send() throws IOException {
		if(count>=10){
			count=1;
		}else{
		count++;
		}
		// 从9999端口发送数据报
		DatagramSocket ds = new DatagramSocket(9999);
		
		// 要发送的数据
		String packetStr = "";
		packetStr = GetPacket1.getPacket(new Integer(count));
		
		// 将数据转换成Byte类型
		byte[] buf = packetStr.getBytes();
		// 得到目标机器的地址实例
		InetAddress address = InetAddress.getByName("192.168.0.98");
		// 将BUF缓冲区中的数据打包

		DatagramPacket sendPacket = new DatagramPacket(buf, buf.length,
				address, 7102);
		// 发送数据
		ds.send(sendPacket);
		
		// 关闭连接
		ds.close();

	}

	@Override
	public void run() {

		try {
			send();
		} catch (IOException e) {
			System.out.println("发送数据包失败!");
			e.printStackTrace();
		}

	}

}