ipaddress-5.0.2.jar 使用方法

package?test;

import?java.io.ByteArrayOutputStream;
import?java.io.DataOutputStream;
import?java.io.IOException;
import?java.util.ArrayList;
import?java.util.Iterator;
import?java.util.List;
import?inet.ipaddr.IPAddress;
import?inet.ipaddr.IPAddressString;
import?inet.ipaddr.ipv4.IPv4Address;

public?class?TestIpAddr?{

	public?static?void?main(String[]?args)?{

		//ip轉bigint
		IPAddress?address?=?new?IPAddressString("192.168.1.1").getAddress()?;
		System.out.println(?address.getValue()??);
		
		//?bigint轉ip
		System.out.println(String.join(".",new?IPv4Address(toByteArray(3232235777L)).getSegmentStrings()));

		//獲取子網
		List<String>?subnetList?=?getSubnetList("192.168.1.1/255.255.252.0");
		
		for(int?i=0;i<subnetList.size()?;?i++?)?{
			System.out.println(subnetList.get(i)?);
		}
	}
	private?static?byte[]?toByteArray(Long?a){
????????ByteArrayOutputStream?bos=new?ByteArrayOutputStream();
????????DataOutputStream?dos=new?DataOutputStream(bos);
????????try?{
????????????dos.writeLong(a);
????????}?catch?(IOException?e)?{
????????????e.printStackTrace();
????????}
????????return?bos.toByteArray();
????}
	
	public?static?List?<String>?getSubnetList?(String?ipAddr){

????????IPAddress?address?=?new?IPAddressString(ipAddr).getAddress();
????????int?prefixLength=address.toAddressString().getNetworkPrefixLength();

????????List<String>?subnetList?=?new?ArrayList<String>();

????????IPAddress?subnet?=?address.applyPrefixLength(prefixLength).toPrefixBlock();
????????Iterator<??extends?IPAddress>?iterator?=?subnet.iterator();
????????
????????while?(iterator.hasNext())?{
????????????subnetList.add(iterator.next().toCanonicalWildcardString());
????????}
????????subnetList.remove(0);
????????subnetList.remove(subnetList.size()-1);
????????return??subnetList;
????}
????

}

jar包下載地址：

https://www.mvnjar.com/com.github.seancfoley/ipaddress/5.0.2/detail.html