Java代码如何判断linux系统windows系统

package Commom;
 
public class osSelect {
 
    public static boolean isLinux() {
        return System.getProperty("os.name").toLowerCase().contains("linux");
    }
 
    public static boolean isWindows() {
        return System.getProperty("os.name").toLowerCase().contains("windows");
    }
 
}

import java.io.BufferedReader;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
 
public class DmcUtils {
 
 
	
	public static String getOSName() {
		return System.getProperty("os.name").toLowerCase();
	}
 
	// 主板序列号 windows
	public static String getMainBordId_windows() {
		String result = "";
		try {
			File file = File.createTempFile("realhowto", ".vbs");
			file.deleteOnExit();
			FileWriter fw = new java.io.FileWriter(file);
 
			String vbs = "Set objWMIService = GetObject(\"winmgmts:\\\\.\\root\\cimv2\")\n"
					+ "Set colItems = objWMIService.ExecQuery _ \n" + "   (\"Select * from Win32_BaseBoard\") \n"
					+ "For Each objItem in colItems \n" + "    Wscript.Echo objItem.SerialNumber \n"
					+ "    exit for  ' do the first cpu only! \n" + "Next \n";
 
			fw.write(vbs);
			fw.close();
			Process p = Runtime.getRuntime().exec("cscript //NoLoGo " + file.getPath());
			BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));
			String line;
			while ((line = input.readLine()) != null) {
				result += line;
			}
			input.close();
		} catch (Exception e) {
			System.out.print("获取主板信息错误");
			 
		}
		return result.trim();
	}
 
	// 主板序列号 linux
	public static String getMainBordId_linux() {
 
		String result = "";
		String maniBord_cmd = "dmidecode | grep 'Serial Number' | awk '{print $3}' | tail -1";
		Process p;
		try {
			p = Runtime.getRuntime().exec(new String[] { "sh", "-c", maniBord_cmd });// 管道
			BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
			String line;
			while ((line = br.readLine()) != null) {
				result += line;
				break;
			}
			br.close();
		} catch (IOException e) {
			System.out.print("获取主板信息错误");
		}
		return result;
	}
 
	
	public static String getMAC_linux() {
		String mac = null;
		BufferedReader bufferedReader = null;
		Process process = null;
		try {
			// linux下的命令，一般取eth0作为本地主网卡
			process = Runtime.getRuntime().exec("ifconfig eth0");
			// 显示信息中包含有mac地址信息
			bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
			String line = null;
			int index = -1;
			while ((line = bufferedReader.readLine()) != null) {
				// 寻找标示字符串[hwaddr]
				index = line.toLowerCase().indexOf("hwaddr");
				if (index >= 0) {// 找到了
					// 取出mac地址并去除2边空格
					mac = line.substring(index + "hwaddr".length() + 1).trim();
					break;
				}
			}
		} catch (IOException e) {
			System.out.print("获取mac信息错误");
		 
		} finally {
			try {
				if (bufferedReader != null) {
					bufferedReader.close();
				}
			} catch (IOException e1) {
				System.out.print("获取mac信息错误");
			}
			bufferedReader = null;
			process = null;
		}
		return mac;
	}
 
        
        public static String getMAC_linuxs() {
		
		String mac = null;
		BufferedReader bufferedReader = null;
		Process process = null;
		try {
			// linux下的命令，一般取eth0作为本地主网卡
			process = Runtime.getRuntime().exec("ifconfig");
			// 显示信息中包含有mac地址信息
			bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
			String line = null;
			int index = -1;
			 while ((line = bufferedReader.readLine()) != null) 
			 {
				 Pattern pat = Pattern.compile("\\b\\w+:\\w+:\\w+:\\w+:\\w+:\\w+\\b");
				 Matcher mat= pat.matcher(line);
				 if(mat.find())
				 {
					 mac=mat.group(0);
				 }
			 }
 
		} catch (IOException e) {
			System.out.print("获取mac信息错误");
			 
		} finally {
			try {
				if (bufferedReader != null) {
					bufferedReader.close();
				}
			} catch (IOException e1) {
				System.out.print("获取mac信息错误");
				 
			}
			bufferedReader = null;
			process = null;
		}
		return mac;
	}
 
 
	
	public static String getMAC_windows() {
		InetAddress ip = null;
		NetworkInterface ni = null;
		List<String> macList = new ArrayList<String>();
		try {
			Enumeration<NetworkInterface> netInterfaces = (Enumeration<NetworkInterface>) NetworkInterface
					.getNetworkInterfaces();
			while (netInterfaces.hasMoreElements()) {
				ni = (NetworkInterface) netInterfaces.nextElement();
				// ----------特定情况，可以考虑用ni.getName判断
				// 遍历所有ip
				Enumeration<InetAddress> ips = ni.getInetAddresses();
				while (ips.hasMoreElements()) {
					ip = (InetAddress) ips.nextElement();
					if (!ip.isLoopbackAddress() // 非127.0.0.1
							&& ip.getHostAddress().matches("(\\d{1,3}\\.){3}\\d{1,3}")) {
						macList.add(getMacFromBytes(ni.getHardwareAddress()));
					}
				}
			}
		} catch (Exception e) {
			System.out.print("获取mac信息错误");
			 
		}
		if (macList.size() > 0) {
			return macList.get(0);
		} else {
			return "";
		}
 
	}
 
	private static String getMacFromBytes(byte[] bytes) {
		StringBuffer mac = new StringBuffer();
		byte currentByte;
		boolean first = false;
		for (byte b : bytes) {
			if (first) {
				mac.append("-");
			}
			currentByte = (byte) ((b & 240) >> 4);
			mac.append(Integer.toHexString(currentByte));
			currentByte = (byte) (b & 15);
			mac.append(Integer.toHexString(currentByte));
			first = true;
		}
		return mac.toString().toUpperCase();
	}
 
	
	public static String getcpUID_Windows() {
		String result = "";
		try {
			File file = File.createTempFile("tmp", ".vbs");
			file.deleteOnExit();
			FileWriter fw = new java.io.FileWriter(file);
			String vbs = "Set objWMIService = GetObject(\"winmgmts:\\\\.\\root\\cimv2\")\n"
					+ "Set colItems = objWMIService.ExecQuery _ \n" + "   (\"Select * from Win32_Processor\") \n"
					+ "For Each objItem in colItems \n" + "    Wscript.Echo objItem.ProcessorId \n"
					+ "    exit for  ' do the first cpu only! \n" + "Next \n";
 
			fw.write(vbs);
			fw.close();
			Process p = Runtime.getRuntime().exec("cscript //NoLogo " + file.getPath());
			BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));
			String line;
			while ((line = input.readLine()) != null) {
				result += line;
			}
			input.close();
			file.delete();
		} catch (Exception e) {
			System.out.print("获取mac信息错误");
		}
		return result.trim();
	}
 
	
	public static String getCPUID_linux() throws InterruptedException {
		String result = "";
		String CPU_ID_CMD = "dmidecode";
		BufferedReader bufferedReader = null;
		Process p = null;
		try {
			p = Runtime.getRuntime().exec(new String[] { "sh", "-c", CPU_ID_CMD });// 管道
			bufferedReader = new BufferedReader(new InputStreamReader(p.getInputStream()));
			String line = null;
			int index = -1;
			while ((line = bufferedReader.readLine()) != null) {
				// 寻找标示字符串[hwaddr]
				index = line.toLowerCase().indexOf("uuid");
				if (index >= 0) {// 找到了
					// 取出mac地址并去除2边空格
					result = line.substring(index + "uuid".length() + 1).trim();
					break;
				}
			}
 
		} catch (IOException e) {
			System.out.print("获取mac信息错误");
		}
		return result.trim();
	}
	
	public static void main(String [] args) throws Exception {
		System.out.println("开始获取！");
		String cpuId=getCPUID_linux();
		System.out.println("linux cpuId:"+cpuId);
		//String cpuId=  getCPUID_Windows();
		//System.out.println("Windows cpuId:"+cpuId);
		String bordId= getMainBordId_linux();
		System.out.println("linux bordId:"+bordId);
		//String bordId=  getMainBordId_windows();
		//System.out.println("Windows bordId:"+bordId);
		System.out.println("获取结束！");
	}
 
}