【转】java:多网卡环境下获取MAC地址

package net.gdface.facelog.device; import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Iterator;
import java.util.List;
import java.util.Set; import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterators; import com.google.common.base.Predicates; import com.google.common.base.Joiner;
import com.google.common.base.Predicate;
import com.google.common.collect.Lists;
import com.google.common.primitives.Bytes; import com.google.common.base.Function; /**
* @author guyadong
*
*/
public class NetworkUtil {
public static enum Radix{
/** 二进制 */BIN(2),
/** 十进制 */DEC(10),
/** 十六进制 */HEX(16);
final int value;
Radix(int radix){
this.value = radix;
}
}
public static enum Filter implements Predicate<NetworkInterface>{
/** 过滤器: 所有网卡 */ALL,
/** 过滤器: 在线设备,see also {@link NetworkInterface#isUp()} */UP,
/** 过滤器: 虚拟接口,see also {@link NetworkInterface#isVirtual()} */VIRTUAL,
/** 过滤器:LOOPBACK, see also {@link NetworkInterface#isLoopback()} */LOOPBACK,
/** 过滤器:物理网卡 */PHYICAL_ONLY; @Override
public boolean apply(NetworkInterface input) {
if(null == input ){
return false;
}
try{
byte[] hardwareAddress;
switch(this){
case UP:
return input.isUp();
case VIRTUAL:
return input.isVirtual();
case LOOPBACK:
return input.isLoopback();
case PHYICAL_ONLY :
hardwareAddress = input.getHardwareAddress();
return null != hardwareAddress
&& hardwareAddress.length > 0
&& !input.isVirtual()
&& !isVMMac(hardwareAddress);
case ALL:
default :
return true;
}
} catch (SocketException e) {
throw new RuntimeException(e);
}
}
}
/**
* 根据过滤器{@code filters}指定的条件(AND)返回网卡设备对象
* @param filters
* @return
*/
@SafeVarargs
@SuppressWarnings("unchecked")
public static Set<NetworkInterface> getNICs(Predicate<NetworkInterface> ...filters) {
if(null == filters){
filters = new Predicate[]{Filter.ALL};
}
try {
Iterator<NetworkInterface> filtered = Iterators.filter(
Iterators.forEnumeration(NetworkInterface.getNetworkInterfaces()),
Predicates.and(filters));
return ImmutableSet.copyOf(filtered);
} catch (SocketException e) {
throw new RuntimeException(e);
}
}
/**
* 返回所有物理网卡
* @return
*/
public static Set<NetworkInterface> getPhysicalNICs() {
return getNICs(Filter.PHYICAL_ONLY,Filter.UP);
}
/**
* 将{@code byte[]} 转换为{@code radix}指定格式的字符串
*
* @param source
* @param separator 分隔符
* @param radix 进制基数
* @return {@code source}为{@code null}时返回空字符串
*/
public static final String format(byte[] source,String separator, final Radix radix) {
if (null == source){
return "";
}
if(null == separator){
separator = "";
}
List<String> hex = Lists.transform(Bytes.asList(source),new Function<Byte,String>(){
@Override
public String apply(Byte input) {
return String.copyValueOf(new char[]{
Character.forDigit((input & 240) >> 4, radix.value),
Character.forDigit(input & 15, radix.value)
});
}});
return Joiner.on(separator).join(hex);
}
/**
* MAC地址格式(16进制)格式化{@code source}指定的字节数组
* @see #format(byte[], String, int)
*/
public static final String formatMac(byte[] source,String separator) {
return format(source,separator,Radix.HEX);
}
/**
* 以IP地址格式(点分位)格式化{@code source}指定的字节数组<br>
* @see #format(byte[], String, int)
*/
public static final String formatIp(byte[] source) {
return format(source,".",Radix.DEC);
}
/**
* 返回指定{@code address}绑定的网卡的物理地址(MAC)
* @param address
* @return 指定的{@code address}没有绑定在任何网卡上返回{@code null}
* @see {@link NetworkInterface#getByInetAddress(InetAddress)}
* @see {@link NetworkInterface#getHardwareAddress()}
*/
public static byte[] getMacAddress(InetAddress address) {
try {
NetworkInterface nic = NetworkInterface.getByInetAddress(address);
return null == nic ? null : nic.getHardwareAddress();
} catch (SocketException e) {
throw new RuntimeException(e);
}
}
/**
* @param nic 网卡对象
* @param separator 格式化分隔符
* @return 表示MAC地址的字符串
*/
public static String getMacAddress(NetworkInterface nic,String separator) {
try {
return format(nic.getHardwareAddress(),separator, Radix.HEX);
} catch (SocketException e) {
throw new RuntimeException(e);
}
}
/**
* 参见 {@link #getMacAddress(InetAddress)}
* @param address
* @param separator 格式化分隔符
* @return 表示MAC地址的字符串
*/
public static String getMacAddress(InetAddress address,String separator) {
return format(getMacAddress(address),separator, Radix.HEX);
}
private static byte invalidMacs[][] = {
{0x00, 0x05, 0x69}, // VMWare
{0x00, 0x1C, 0x14}, // VMWare
{0x00, 0x0C, 0x29}, // VMWare
{0x00, 0x50, 0x56}, // VMWare
{0x08, 0x00, 0x27}, // Virtualbox
{0x0A, 0x00, 0x27}, // Virtualbox
{0x00, 0x03, (byte)0xFF}, // Virtual-PC
{0x00, 0x15, 0x5D} // Hyper-V
};
private static boolean isVMMac(byte[] mac) {
if(null == mac) {
return false;
} for (byte[] invalid: invalidMacs){
if (invalid[0] == mac[0] && invalid[1] == mac[1] && invalid[2] == mac[2]) {
return true;
}
} return false;
} }