java获取网卡MAC地址，java获取网卡序列号的方法

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　　刚写的java获取网卡mac地址序列号的方法。在这里记录一下。

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
public class MACAddress {
public MACAddress() {
}
public static String getMACAddress() {
String address = "";
String os = System.getProperty("os.name");
if (os != null && os.startsWith("Windows")) {
try {
String command = "cmd.exe /c ipconfig /all";
Process p = Runtime.getRuntime().exec(command);
BufferedReader br = new BufferedReader(new InputStreamReader(p
.getInputStream()));
String line;
while ((line = br.readLine()) != null) {
if (line.indexOf("Physical Address") > 0) {
int index = line.indexOf(":");
index += 2;
address = line.substring(index);
break;
}
}
br.close();
return address.trim();
} catch (IOException e) {
}
}
return address;
}
public static void main(String[] args) {
// System.out.println(""+MACAddress.getMACAddress());
try {
// 枚举所有网络接口设备
Enumeration intefaces = NetworkInterface.getNetworkInterfaces();
// 循环处理每一个网络接口设备
while (intefaces.hasMoreElements()) {
NetworkInterface face = (NetworkInterface) intefaces
.nextElement();
if (face.getName().length() >= 3) {
if ((face.getName()).substring(0, 3).equals("eth") || (face.getName()).substring(0, 3).equals("net")) {
byte[] mac = face.getHardwareAddress();
if (mac != null && mac.length == 6) {
System.out.println("网卡显示名称："
+ face.getDisplayName());
System.out.println("网卡设备名称：" + face.getName());
System.out.println("MAC地址：" + bytes2mac(mac));
//break;
}
}
}
}
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private static String bytes2mac(byte[] bytes) {
if (bytes.length != 6) {
System.out.println("地址错误");
return null;
}
StringBuffer macString = new StringBuffer();
byte currentByte;
for (int i = 0; i < bytes.length; i++) {
currentByte = (byte) ((bytes & 240) >> 4);
macString.append(Integer.toHexString(currentByte));
currentByte = (byte) (bytes & 15);
macString.append(Integer.toHexString(currentByte));
macString.append("-");
}
macString.delete(macString.length() - 1, macString.length());
return macString.toString().toUpperCase();
}
}