java 根据多个ipv4生成范围ip

可以使用以下代码来生成多个 IPv4 范围内的 IP 地址：

public static List<String> generateIPRange(String startIP, String endIP) {
    List<String> ipList = new ArrayList<>();
    try {
        long start = ipToLong(startIP);
        long end = ipToLong(endIP);
        for (long i = start; i <= end; i++) {
            ipList.add(longToIP(i));
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return ipList;
}

private static long ipToLong(String ipAddress) {
    String[] ipAddressInArray = ipAddress.split("\\.");
    long result = 0;
    for (int i = 0; i < ipAddressInArray.length; i++) {
        int power = 3 - i;
        int ip = Integer.parseInt(ipAddressInArray[i]);
        result += ip * Math.pow(256, power);
    }
    return result;
}

private static String longToIP(long ip) {
    StringBuilder sb = new StringBuilder(15);
    for (int i = 0; i < 4; i++) {
        sb.insert(0, Long.toString(ip & 0xff));
        if (i < 3) {
            sb.insert(0, '.');
        }
        ip >>= 8;
    }
    return sb.toString();
}

使用方式：

String startIP = "192.168.0.1";
String endIP = "192.168.0.10";
List<String> ipList = generateIPRange(startIP, endIP);
System.out.println(ipList);

输出结果：

[192.168.0.1, 192.168.0.2, 192.168.0.3, 192.168.0.4, 192.168.0.5, 192.168.0.6, 192.168.0.7, 192.168.0.8, 192.168.0.9, 192.168.0.10]