获得主机名和MAC地址

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使用getCanonicalHostName方法获得主机名

Java获取本机MAC地址

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;

/*
 * 物理地址是48位，别和ipv6搞错了
 */
public class LOCALMAC {
	/**
	 * @param args
	 * @throws UnknownHostException
	 * @throws SocketException
	 */
	public static void main(String[] args) throws UnknownHostException,
			SocketException {
		// TODO Auto-generated method stub

		// 得到IP，输出PC-201309011313/122.206.73.83
		InetAddress ia = InetAddress.getLocalHost();
		System.out.println(ia);
		getLocalMac(ia);
	}

	private static void getLocalMac(InetAddress ia) throws SocketException {
		// TODO Auto-generated method stub
		// 获取网卡，获取地址
		byte[] mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress();
		System.out.println("mac数组长度：" + mac.length);
		StringBuffer sb = new StringBuffer("");
		for (int i = 0; i < mac.length; i++) {
			if (i != 0) {
				sb.append("-");
			}
			// 字节转换为整数
			int temp = mac[i] & 0xff;
			String str = Integer.toHexString(temp);
			System.out.println("每8位:" + str);
			if (str.length() == 1) {
				sb.append("0" + str);
			} else {
				sb.append(str);
			}
		}
		System.out.println("本机MAC地址:" + sb.toString().toUpperCase());
	}
}

java 获取MAC地址

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;


/**
* @title: MacAddressUtil 
* @description：获取MAC地址
* @author：liming
* @date： 2013-5-5 下午04:42:50
*/
public class MacAddressUtil{
	
	/**
	* @MethodName: getOSName 
	* @description : 获取当前操作系统名称. return 操作系统名称 例如:windows,Linux,Unix等
	* @author：liming
	* @date： 2013-5-5 下午04:43:36
	* @return String
	*/
	public static String getOSName() {
		return System.getProperty("os.name").toLowerCase();
	}
	
	/**
	* @MethodName: getWindowXPMACAddress 
	* @description : 获取widnowXp网卡的mac地址
	* @author：liming
	* @date： 2013-5-5 下午04:45:12
	* @param execStr
	* @return String
	*/
	public static String getWindowXPMACAddress(String execStr) {
		String mac = null;
		BufferedReader bufferedReader = null;
		Process process = null;
		try {
			// windows下的命令，显示信息中包含有mac地址信息
			process = Runtime.getRuntime().exec(execStr);
			bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
			String line = null;
			int index = -1;
			while ((line = bufferedReader.readLine()) != null) {
				if(line.indexOf("本地连接") != -1)     //排除有虚拟网卡的情况
					continue;
				
				// 寻找标示字符串[physical address]
				index = line.toLowerCase().indexOf("physical address");
				if (index != -1) {
					index = line.indexOf(":");
					if (index != -1) {
						//取出mac地址并去除2边空格
						mac = line.substring(index + 1).trim();
					}
					break;
				}	
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (bufferedReader != null) {
					bufferedReader.close();
				}
			} catch (IOException e1) {
				e1.printStackTrace();
			}
			bufferedReader = null;
			process = null;
		}
		return mac;
	}
	
	/**
	* @MethodName: getWindow7MACAddress 
	* @description : 获取widnow7网卡的mac地址
	* @author：liming
	* @date： 2013-5-5 下午04:46:56
	* @param execStr
	* @return String
	*/
	public static String getWindow7MACAddress() {
		//获取本地IP对象
		InetAddress ia = null;
		try {
			ia = InetAddress.getLocalHost();
		} catch (UnknownHostException e) {
			e.printStackTrace();
		}
		//获得网络接口对象（即网卡），并得到mac地址，mac地址存在于一个byte数组中。
        byte[] mac = null;
		try {
			mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress();
		} catch (SocketException e) {
			e.printStackTrace();
		}
        //下面代码是把mac地址拼装成String
        StringBuffer sb = new StringBuffer(); 
        for(int i=0;i -1) {
					result =  line.substring(line.indexOf(envName)
							+ envName.length() + 1);
					return result;
				}
			}
		} catch (Exception e) {
			System.out.println("获取系统命令路径 error: " + cmd + ":" + e);
		}
		return null;
	}
	

}