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转bigint IPAddress address = new IPAddressString("192.168.1.1").getAddress() ; System.out.println( address.getValue() ); // bigint转ip System.out.println(String.join(".",new IPv4Address(toByteArray(3232235777L)).getSegmentStrings())); //获取子网 ListsubnetList = getSubnetList("192.168.1.1/255.255.252.0"); for(int i=0;i getSubnetList (String ipAddr){ IPAddress address = new IPAddressString(ipAddr).getAddress(); int prefixLength=address.toAddressString().getNetworkPrefixLength(); List subnetList = new ArrayList (); 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; } }
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