CPU序列號：

1. package test;  
2. import java.io.IOException;  
3. import java.util.Scanner;  
4. publicclass CPUTest {  
5.     /** 
6.      * @param args 
7.      * @throws IOException  
8.      */
9.     publicstaticvoid main(String[] args) throws IOException {  
10.         // TODO Auto-generated method stub
11.         long start = System.currentTimeMillis();  
12.         Process process = Runtime.getRuntime().exec(  
13.                 new String[] { "wmic", "cpu", "get", "ProcessorId" });  
14.         process.getOutputStream().close();  
15.         Scanner sc = new Scanner(process.getInputStream());  
16.         String property = sc.next();  
17.         String serial = sc.next();  
18.         System.out.println(property + ": " + serial);  
19.         System.out.println("time:" + (System.currentTimeMillis() - start));  
20.     }  
21. }  

  結果輸出是這樣的   

          其實就是用Runtime.getRuntime().exec 執行一個指令而已。。

      想知道結果是否是準確的 ， 可以在DOS下面測試  首先windows鍵+R鍵 開啟執行框 ，然後輸入cmd 開啟DOS 。然後輸入   wmic cpu get ProcessorId   

      這次的結果任然是    

      Runtime.getRuntime().exec 真的很強大啊，直接可以取得當前JVM的執行時環境，然後通過exec執行傳入的命令引數，Runtime.exec還可以做其他的事情，比如說直接開啟一個檔案。。不過在這裡我就不在做了，有興趣的小夥伴可以自己去試試看。。。

轉載自：https://blog.csdn.net/y353027520dx/article/details/42494721

package util;
import java.net.NetworkInterface;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Properties;
import java.util.Set;
import org.hyperic.sigar.NetFlags;
import org.hyperic.sigar.NetInterfaceConfig;
import org.hyperic.sigar.Sigar;
import org.hyperic.sigar.SigarException;
import org.springframework.security.authentication.encoding.Md5PasswordEncoder;

/**
 * java獲取mac和機器碼，註冊碼的實現
 * 
 */
public class AuthorizationUtils {
	private static final int SPLITLENGTH = 4;
	private static final String SALT = "yunshouhu";

	public static void main(String args[]) throws Exception {
		String code = getMachineCode();

		System.out.println("code:" + code);

		String authCode = auth(code);
		System.out.println("機器碼：" + code);
		System.out.println("註冊碼：" + authCode);

		// System.out.println("mac:"+getMac());
		// System.out.println("mac2:"+getMac2());

	}

	private static String getMachineCode() {
		Set<String> result = new HashSet<>();
		String mac = getMac();
		System.out.println("mac:" + getMac());
		result.add(mac);
		Properties props = System.getProperties();
		String javaVersion = props.getProperty("java.version");
		result.add(javaVersion);
		// System.out.println("Java的執行環境版本：    " + javaVersion);
		String javaVMVersion = props.getProperty("java.vm.version");
		result.add(javaVMVersion);
		// System.out.println("Java的虛擬機器實現版本：    " +
		// props.getProperty("java.vm.version"));
		String osVersion = props.getProperty("os.version");
		result.add(osVersion);
		// System.out.println("作業系統的版本：    " + props.getProperty("os.version"));

		String code = new Md5PasswordEncoder().encodePassword(
				result.toString(), SALT);
		return getSplitString(code, "-", 4);

	}

	// 使用hyperic-sigar獲取mac
	private static String getMac2() throws SigarException {
		Sigar sigar = new Sigar();
		String[] ifaces = sigar.getNetInterfaceList();
		for (String iface : ifaces) {
			NetInterfaceConfig cfg = sigar.getNetInterfaceConfig(iface);
			if (NetFlags.LOOPBACK_ADDRESS.equals(cfg.getAddress())
					|| (cfg.getFlags() & NetFlags.IFF_LOOPBACK) != 0
					|| NetFlags.NULL_HWADDR.equals(cfg.getHwaddr())) {
				continue;
			}
			String mac = cfg.getHwaddr();
			return mac;
		}
		return null;

	}

	public static String auth(String machineCode) {
		String newCode = "([email protected])["
				+ machineCode.toUpperCase() + "](xxx應用級產品開發平臺)";
		String code = new Md5PasswordEncoder().encodePassword(newCode, SALT)
				.toUpperCase() + machineCode.length();
		return getSplitString(code);
	}

	private static String getSplitString(String str) {
		return getSplitString(str, "-", SPLITLENGTH);
	}

	private static String getSplitString(String str, String split, int length) {
		int len = str.length();
		StringBuilder temp = new StringBuilder();
		for (int i = 0; i < len; i++) {
			if (i % length == 0 && i > 0) {
				temp.append(split);
			}
			temp.append(str.charAt(i));
		}
		String[] attrs = temp.toString().split(split);
		StringBuilder finalMachineCode = new StringBuilder();
		for (String attr : attrs) {
			if (attr.length() == length) {
				finalMachineCode.append(attr).append(split);
			}
		}
		String result = finalMachineCode.toString().substring(0,
				finalMachineCode.toString().length() - 1);
		return result;
	}

	public static String bytesToHexString(byte[] src) {
		StringBuilder stringBuilder = new StringBuilder("");
		if (src == null || src.length <= 0) {
			return null;
		}
		for (int i = 0; i < src.length; i++) {
			int v = src[i] & 0xFF;
			String hv = Integer.toHexString(v);
			if (hv.length() < 2) {
				stringBuilder.append(0);
			}
			stringBuilder.append(hv);
		}
		return stringBuilder.toString();
	}

	// ‎00-24-7E-0A-22-93
	private static String getMac() {
		try {
			Enumeration<NetworkInterface> el = NetworkInterface
					.getNetworkInterfaces();
			while (el.hasMoreElements()) {
				byte[] mac = el.nextElement().getHardwareAddress();
				if (mac == null)
					continue;

				String hexstr = bytesToHexString(mac);
				return getSplitString(hexstr, "-", 2).toUpperCase();

			}
		} catch (Exception exception) {
			exception.printStackTrace();
		}
		return null;
	}
}