java获取有线网络的ip地址 与mac地址

try {
for (Enumeration<NetworkInterface> en = NetworkInterface
.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf
.getInetAddresses(); enumIpAddr
.hasMoreElements();) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()
&& InetAddressUtils
.isIPv4Address(inetAddress
.getHostAddress())) {
if (!inetAddress.getHostAddress().toString()
.equals("null")
&& inetAddress.getHostAddress() != null) {
System.out
.println(inetAddress
.getHostAddress()
.toString().trim()+"----"+getEth0MacAddress());
}
}
}
}
} catch (SocketException ex) {
Log.e("WifiPreference IpAddress", ex.toString());
}

String strMacAddr = null;
try {
byte[] b = NetworkInterface.getByName("eth0")
.getHardwareAddress();
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < b.length; i++) {
if (i != 0) {
buffer.append(':');
}
System.out.println("b:"+(b[i]&0xFF));
String str = Integer.toHexString(b[i] & 0xFF);
buffer.append(str.length() == 1 ? 0 + str : str);
}
strMacAddr = buffer.toString().toUpperCase();
} catch (Exception e) {
e.printStackTrace();
}