java 获取网卡信息

public static void main(String[] args) throws Exception {
		Enumeration<NetworkInterface> en = NetworkInterface
				.getNetworkInterfaces();
		while (en.hasMoreElements()) {
			printParameter(en.nextElement());
		}
	}

	public static void printParameter(NetworkInterface ni)
			throws SocketException {
		System.out.println(" Name = " + ni.getName());
		System.out.println(" Display Name = " + ni.getDisplayName());
		System.out.println(" Is up = " + ni.isUp());
		System.out.println(" Support multicast = " + ni.supportsMulticast());
		System.out.println(" Is loopback = " + ni.isLoopback());
		System.out.println(" Is virtual = " + ni.isVirtual());
		System.out.println(" Is point to point = " + ni.isPointToPoint());
		byte[] macaddress = ni.getHardwareAddress();
		if (macaddress != null) {
			System.out.printf(
					" Hardware address = %02X-%02X-%02X-%02X-%02X-%02X\n",
					macaddress[0], macaddress[1], macaddress[2], macaddress[3],
					macaddress[4], macaddress[5]);
		} else {
			System.out.println(" Hardware address = null");
		}
		System.out.println(" MTU = " + ni.getMTU());
		System.out.println("\n List of Interface Addresses:");
		List<InterfaceAddress> list = ni.getInterfaceAddresses();
		Iterator<InterfaceAddress> it = list.iterator();
		while (it.hasNext()) {
			InterfaceAddress ia = it.next();
			System.out.println(" Address = " + ia.getAddress());
			System.out.println(" Broadcast = " + ia.getBroadcast());
			System.out.println(" Network prefix length = "
					+ ia.getNetworkPrefixLength());
			System.out.println("");
		}
	}