/* 利用Runtime call操作系统的命令，具体的命令取决于不同的操作系统，注意不要调用Runtime.getRuntime().exec(String)接口，要用Runtime.getRuntime().exec(String[])这个接口，不然复杂命令的执行会有问题。例子如下（拿cpu个数，其他类似）：
* 定义命令：
* WindowsCmd ="cmd.exe /c echo %NUMBER_OF_PROCESSORS%";//windows的特殊
* SolarisCmd = {"/bin/sh", "-c", "/usr/sbin/psrinfo | wc -l"};
* AIXCmd = {"/bin/sh", "-c", "/usr/sbin/lsdev -Cc processor | wc -l"};
* HPUXCmd = {"/bin/sh", "-c", "echo \"map\" | /usr/sbin/cstm | grep CPU | wc -l "};
* LinuxCmd = {"/bin/sh", "-c", "cat /proc/cpuinfo | grep ^process | wc -l"};
*
* 然后判断系统：
* os = System.getProperty("os.name").toLowerCase();
*
* 根据不同的操作系统call不同的命令。
*/

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.LineNumberReader;

public class GetMACAddress {
public String getMACAddress(String ipAddress) {
String str = "", strMAC = "", macAddress = "";
try {
Process pp = Runtime.getRuntime().exec("nbtstat -a " + ipAddress);
InputStreamReader ir = new InputStreamReader(pp.getInputStream());
LineNumberReader input = new LineNumberReader(ir);
for (int i = 1; i < 100; i++) {
str = input.readLine();
if (str != null) {
if (str.indexOf("MAC Address") > 1) {
strMAC = str.substring(str.indexOf("MAC Address") + 14,
str.length());
break;
}
}
}
} catch (IOException ex) {
return "Can't Get MAC Address!";
}
//
if (strMAC.length() < 17) {
return "Error!";
}
macAddress = strMAC.substring(0, 2) + ":" + strMAC.substring(3, 5)
+ ":" + strMAC.substring(6, 8) + ":" + strMAC.substring(9, 11)
+ ":" + strMAC.substring(12, 14) + ":"
+ strMAC.substring(15, 17);
//
return macAddress;
}

public static void main(String[] args) {
GetMACAddress getMACAddress = new GetMACAddress();
System.out.println(getMACAddress.getMACAddress("172.18.8.225"));

try {
java.lang.Process proc = Runtime.getRuntime().exec("ipconfig /all");
InputStream istr = proc.getInputStream();
byte[] data = new byte[1024];
istr.read(data);
String netdata = new String(data);
System.out.println("Your Mac Address=" + procAll(netdata));
} catch (IOException e) {
System.out.println("error=" + e);
}
}

public static String procAll(String str) {
return procStringEnd(procFirstMac(procAddress(str)));
}

public static String procAddress(String str) {
int indexof = str.indexOf("Physical Address");
if (indexof > 0) {
return str.substring(indexof, str.length());
}
return str;
}

public static String procFirstMac(String str) {
int indexof = str.indexOf(":");
if (indexof > 0) {
return str.substring(indexof + 1, str.length()).trim();
}
return str;
}

public static String procStringEnd(String str) {
int indexof = str.indexOf("\r");
if (indexof > 0) {
return str.substring(0, indexof).trim();
}
return str;
}
}