检查CIDR是否包含公共IP地址-在Java中

import java.net.InetAddress;

public class CIDRChecker {
    public static void main(String[] args) {
        String cidr = "192.168.0.0/24";
        String ipToCheck = "192.168.0.100";

        try {
            // 解析CIDR字符串
            String[] cidrParts = cidr.split("/");
            String cidrIp = cidrParts[0];
            int cidrPrefixLength = Integer.parseInt(cidrParts[1]);

            // 获取要检查的IP地址对象
            InetAddress ip = InetAddress.getByName(ipToCheck);

            // 获取CIDR范围的起始IP地址和结束IP地址
            CIDRUtils cidrUtils = new CIDRUtils(cidr);
            InetAddress cidrStartIp = InetAddress.getByName(cidrUtils.getNetworkAddress());
            InetAddress cidrEndIp = InetAddress.getByName(cidrUtils.getBroadcastAddress());

            // 将要检查的IP地址和CIDR范围的起始、结束IP地址转换为无符号整数
            long ipValue = getUnsignedInt(ip.getAddress());
            long cidrStartIpValue = getUnsignedInt(cidrStartIp.getAddress());
            long cidrEndIpValue = getUnsignedInt(cidrEndIp.getAddress());

            // 检查CIDR是否包含公共IP地址
            if (ipValue >= cidrStartIpValue && ipValue <= cidrEndIpValue) {
                System.out.println("CIDR " + cidr + " 包含公共IP地址 " + ipToCheck);
            } else {
                System.out.println("CIDR " + cidr + " 不包含公共IP地址 " + ipToCheck);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // 将字节数组转换为无符号整数
    private static long getUnsignedInt(byte[] bytes) {
        long value = 0;
        for (int i = 0; i < bytes.length; i++) {
            value = (value << 8) + (bytes[i] & 0xff);
        }
        return value;
    }
}