Apache commons net 包介绍和简单使用

import java.util.Arrays;

import java.util.Scanner;

import org.apache.commons.net.util.SubnetUtils;

import org.apache.commons.net.util.SubnetUtils.SubnetInfo;

 

/**

 * Example class that shows how to use the {@link SubnetUtils} class.

 * @author Rory Winston <[email?protected]>

 *

 */

public classSubnetUtilsExample {

 

   public static void main(String[] args) {

        String subnet = "192.168.38.1/31";

        SubnetUtils utils = new SubnetUtils(subnet);

        SubnetInfo info = utils.getInfo();

 

        System.out.printf("Subnet Information for %s:n",subnet);

        System.out.println("--------------------------------------");

        System.out.printf("IP Address:ttt%st[%s]n",info.getAddress(),Integer.toBinaryString(info.asInteger(info.getAddress())));

        System.out.printf("Netmask:ttt%st[%s]n",info.getNetmask(),Integer.toBinaryString(info.asInteger(info.getNetmask())));

        System.out.printf("CIDR Representation:tt%snn",info.getCidrSignature());

 

        System.out.printf("Supplied IP Address:tt%snn",info.getAddress());

 

        System.out.printf("Network Address:tt%st[%s]n",info.getNetworkAddress(),Integer.toBinaryString(info.asInteger(info.getNetworkAddress())));

        System.out.printf("Broadcast Address:tt%st[%s]n",info.getBroadcastAddress(),Integer.toBinaryString(info.asInteger(info.getBroadcastAddress())));

        System.out.printf("Low Address:ttt%st[%s]n",info.getLowAddress(),Integer.toBinaryString(info.asInteger(info.getLowAddress())));

        System.out.printf("High Address:ttt%st[%s]n",info.getHighAddress(),Integer.toBinaryString(info.asInteger(info.getHighAddress())));

 

        System.out.printf("Total usable addresses: t%dn",Integer.valueOf(info.getAddressCount()));

        System.out.printf("Address List: %snn",Arrays.toString(info.getAllAddresses()));

 

        System.out.println("全部地址：" + Arrays.toString(info.getAllAddresses()));

        final String prompt ="Enter an IP address (e.g. 192.168.0.10):";

        System.out.println(prompt);

        Scanner scanner = new Scanner(System.in);

        while (scanner.hasNextLine()) {

            String address =scanner.nextLine();

           

            System.out.println("The IP address [" + address + "] is "

                    + (info.isInRange(address)? "": "not ")

                    + "within the subnet [" + subnet + "]");

            System.out.println(prompt);

        }

 

   }

 

}