远程唤醒实现开机

全栈程序员-站长 • 2022年5月6日上午9:04 • 未分类 • 阅读 36

大家好，又见面了，我是你们的朋友全栈君。

package com.lh.openOS;

import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;

public class TestOpenOS
{
	private int port = 10000;
	private String mac = "8C-89-A5-19-82-9A";
	private String ipAddress = "255.255.255.255";

	public TestOpenOS()
	{
		// TODO Auto-generated constructor stub
	}
	
	private void setMac(String mac)
	{
		this.mac = mac;
	}
	
	public TestOpenOS(int port, String mac, String ipAddress)
	{
		this.port = port;
		this.mac = mac;
		this.ipAddress = ipAddress;
	}

	public void sendOpenOS()
	{
		InetAddress destHost = null;
		DatagramSocket ds = null;
		try
		{
			destHost = InetAddress.getByName(ipAddress);
			byte[] destMac = getMacBytes(mac);
			byte[] magicBytes = new byte[102];

			// 将数据包的前六位放入0xFF即“FF”的二进制
			// 发一个BroadCast包，包的内容包括以下数据就可以了。
			// FF FF FF FF FF FF，6个FF是数据的开始，
			// 紧跟着16次MAC地址就可以了。
			for (int i = 0; i < 16; i++)
			{
				for (int j = 0; j < destMac.length; j++)
				{
					magicBytes[6 + destMac.length * i + j] = destMac[j];
					magicBytes[j] = (byte) 0xFF;
				}
			}

			// --------------------查看数据报发出的数据---------------------
			for (int i = 1; i <= 102; i++)
			{
				if (((i - 1) % 6) == 0)
				{
					System.out.println();
				}
				System.out.print(magicBytes[i - 1] + "===");
			}

//			System.out.println("port =" + port + ", destHost=" + destHost + ",magicBytes.length = " + magicBytes.length);
			
			
			DatagramPacket dp = null;
			try
			{
				dp = new DatagramPacket(magicBytes, magicBytes.length, destHost, port);
				ds = new DatagramSocket();
				ds.send(dp);
			}
			catch (Exception e)
			{
				// TODO: handle exception
				e.printStackTrace();
			}
		}
		catch (Exception e)
		{
			// TODO: handle exception
			e.printStackTrace();
		}
		finally
		{
			if (null != ds)
			{
				//关闭数据报流
				ds.close();
			}
		}
	}

	// 远程关机
	public void sendCloseOS()
	{

	}
	
	/**
	 *  将16进制的mac地址转换为二进制 
	 * @param macStr
	 * @return 
	 * @throws IllegalArgumentException
	 */
	private static byte[] getMacBytes(String macStr) throws IllegalArgumentException
	{
		byte[] bytes = new byte[6];
		String[] hex = macStr.split("(\\:|\\-)");
		if (hex.length != 6)
		{
			throw new IllegalArgumentException("mac 地址有问题，你看看对不对？Invalid MAC address.");
		}
		try
		{
			for (int i = 0; i < 6; i++)
			{
				bytes[i] = (byte) Integer.parseInt(hex[i], 16);
			}
		}
		catch (NumberFormatException e)
		{
			throw new IllegalArgumentException("Invalid hex digit in MAC address.");
		}
		return bytes;
	}

	public static void main(String[] args)
	{
		TestOpenOS w = new TestOpenOS();
		w.sendOpenOS();
		
		w.setMac("8C-89-A5-19-80-3D");
		w.sendOpenOS();
	}
}

发布者：全栈程序员-站长，转载请注明出处：https://javaforall.net/137927.html原文链接：https://javaforall.net