java ipv6工具类

以下是一个Java IPv6工具类的示例代码，它包含了各种IPv6地址相关的操作和转换方法，可以方便地处理IPv6地址：

import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.UnknownHostException;
public class IPv6Utils {
  // 将IPv6地址字符串转换为InetAddress对象
  public static InetAddress toInetAddress(String ipv6Str) throws UnknownHostException {
    return Inet6Address.getByName(ipv6Str);
  // 将InetAddress对象转换为IPv6地址字符串
  public static String toIPv6String(InetAddress inetAddress) {
    if (inetAddress instanceof Inet6Address) {
      return inetAddress.getHostAddress();
    } else {
      throw new IllegalArgumentException("Not an IPv6 address");
  // 检查是否为IPv6地址
  public static boolean isIPv6Address(String ipAddress) {
    try {
      InetAddress.getByName(ipAddress);
      return true;
    } catch (UnknownHostException e) {
      return false;
  // 检查是否为IPv4-mapped IPv6地址
  public static boolean isIPv4MappedAddress(String ipAddress) {
    try {
      InetAddress inetAddress = InetAddress.getByName(ipAddress);
      return inetAddress instanceof Inet6Address && ((Inet6Address)inetAddress).isIPv4MappedAddress();
    } catch (UnknownHostException e) {
      return false;
  // 将IPv4地址转换为IPv6地址
  public static String toIPv6Address(String ipv4Address) {
    String[] octets = ipv4Address.split("\\.");
    byte[] octetBytes = new byte[4];
    for (int i = 0; i < octets.length; i++) {
      octetBytes[i] = (byte) Integer.parseInt(octets[i]);
    byte[] ipv6Bytes = new byte[16];
    ipv6Bytes[10] = (byte)0xff;
    ipv6Bytes[11] = (byte)0xff;
    ipv6Bytes[12] = octetBytes[0];
    ipv6Bytes[13] = octetBytes[1];
    ipv6Bytes[14] = octetBytes[2];
    ipv6Bytes[15] = octetBytes[3];
    try {
      return InetAddress.getByAddress(ipv6Bytes).getHostAddress();
    } catch (UnknownHostException e) {
      return null;
这个工具类包含了常见的IPv6地址转换和操作方法，包括将IPv6地址字符串转换为InetAddress对象、将InetAddress对象转换为IPv6地址字符串、检查是否为IPv6地址、检查是否为IPv4-mapped IPv6地址、将IPv4地址转换为IPv6地址等。
使用这个工具类，您可以方便地处理IPv6地址，而无需自己编写复杂的代码。