在项目中使用到IP转换的方法，涉及到IPV6和IPV4，自己把写的代码记录一下，当做笔记记录下来，不一定正确，仅供参考
package com.my.utils;
import java.math.BigInteger;
import java.util.StringTokenizer;
import java.util.regex.Pattern;
public class IPUtils {
/**
* @Description: 将字符串类型的IP地址转换为十进制数字
* @author xj
* @date 创建时间:2017-12-6 上午9:28:38
* @param SIP
* @return 转换后的十进制数字字符串
* @version V1.0
*/
public static String ip2Num(final String SIP) {
if (SIP == null || SIP.equals("")) {
return null;
}
// ipv6转换
int index = SIP.indexOf(":");
if (index != -1) {// 是ipv6地址
int compressIndex = SIP.indexOf("::");
if (compressIndex != -1) {
String part1s = SIP.substring(0, compressIndex);
String part2s = SIP.substring(compressIndex + 1);
BigInteger part1 = ipv6ToNum(part1s);
BigInteger part2 = ipv6ToNum(part2s);
int part1hasDot = 0;
char ch[] = part1s.toCharArray();
for (char c : ch) {
if (c == ':') {
part1hasDot++;
}
}
// ipv6 has most 7 dot
return String.valueOf(part1.shiftLeft(16 * (7 - part1hasDot))
.add(part2));
}
String[] str = SIP.split(":");
BigInteger big = BigInteger.ZERO;
for (int i = 0; i < str.length; i++) {
// ::1
if (str[i].isEmpty()) {
str[i] = "0";
}
big = big.add(BigInteger.valueOf(Long.valueOf(str[i], 16))
.shiftLeft(16 * (str.length - i - 1)));
}
return String.valueOf(big);
}
// Ipv4地址
Long ip = null;
int i = 3;
StringTokenizer src = new StringTokenizer(SIP, ".");
while (src.hasMoreTokens()) {
String temp = src.nextToken();
if (i == 3) {
ip = (long) (new Integer(temp).intValue() * Math.pow(256, i));
} else {
ip = (long) (ip + (new Integer(temp).intValue() * Math.pow(256,
i)));
}
i--;
}
return String.valueOf(ip);
}
/**
* @Description: 比较字符串格式IP大小
* @author xj
* @date 创建时间:2017-12-6 上午9:28:38
* @param ip1
* @param ip2
* @return ip1小于ip2则返回-1;ip1等于ip2则返回0;ip1大于ip2则返回1; 数据错误返回-2
* @version V1.0
*/
public static int compareIP(final String ip1, final String ip2) {
if (!(checkStrIsIP(ip1) && checkStrIsIP(ip2))) {
return -2;
}
if (ip1.equals(ip2)) {// 相等
return 0;
}
if (ip1.contains(".") && ip2.contains(".")) {// 都表示IPV4
return ipV4ToLong(ip1).compareTo(ipV4ToLong(ip2));
}
if (ip1.contains(":") && ip2.contains(":")) {// 都表示IPV6
return ipv6ToNum(ip1).compareTo(ipv6ToNum(ip2));
}
return -2;
}
/**
* @Description: 判断IP格式是否正确,IPV4和IPV6均可
* @author xj
* @date 创建时间:2017-12-6 上午11:30:29
* @param str
* @return
* @version V1.0
*/
public static boolean checkStrIsIP(String str) {
Pattern patternV4 = Pattern
.compile("^((\\d|[1-9]\\d|1\\d\\d|2[0-4]\\d|25[0-5]"
+ "|[*])\\.){3}(\\d|[1-9]\\d|1\\d\\d|2[0-4]\\d|25[0-5]|[*])$");
Pattern patternV6 = Pattern
.compile("^((([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){1,7}:)|(([0-9A-Fa-f]{1,4}:){6}:[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){5}(:[0-9A-Fa-f]{1,4}){1,2})|(([0-9A-Fa-f]{1,4}:){4}(:[0-9A-Fa-f]{1,4}){1,3})|(([0-9A-Fa-f]{1,4}:){3}(:[0-9A-Fa-f]{1,4}){1,4})|(([0-9A-Fa-f]{1,4}:){2}(:[0-9A-Fa-f]{1,4}){1,5})|([0-9A-Fa-f]{1,4}:(:[0-9A-Fa-f]{1,4}){1,6})|(:(:[0-9A-Fa-f]{1,4}){1,7})|(([0-9A-Fa-f]{1,4}:){6}(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3})|(([0-9A-Fa-f]{1,4}:){5}:(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3})|(([0-9A-Fa-f]{1,4}:){4}(:[0-9A-Fa-f]{1,4}){0,1}:(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3})|(([0-9A-Fa-f]{1,4}:){3}(:[0-9A-Fa-f]{1,4}){0,2}:(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3})|(([0-9A-Fa-f]{1,4}:){2}(:[0-9A-Fa-f]{1,4}){0,3}:(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3})|([0-9A-Fa-f]{1,4}:(:[0-9A-Fa-f]{1,4}){0,4}:(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3})|(:(:[0-9A-Fa-f]{1,4}){0,5}:(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])(\\.(\\d|[1-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3}))$");
return patternV4.matcher(str).matches()||patternV6.matcher(str).matches();
}
/**
* @Description: 将IPV4转为Long型IP
* @author xj
* @date 创建时间:2017-12-6 上午9:57:03
* @param SIP
* @return
* @version V1.0
*/
public static Long ipV4ToLong(final String SIP) {
Long ip = null;
int i = 3;
StringTokenizer src = new StringTokenizer(SIP, ".");
while (src.hasMoreTokens()) {
String temp = src.nextToken();
if (i == 3) {
ip = (long) (new Integer(temp).intValue() * Math.pow(256, i));
} else {
ip = (long) (ip + (new Integer(temp).intValue() * Math.pow(256,
i)));
}
i--;
}
return ip;
}
/**
* @Description: 将IPV6转为BigInteger型IP
* @author xj
* @date 创建时间:2017-12-6 上午9:57:03
* @param SIP
* @return
* @version V1.0
*/
public static BigInteger ipv6ToNum(final String ipv6) {
int compressIndex = ipv6.indexOf("::");
if (compressIndex != -1) {
String part1s = ipv6.substring(0, compressIndex);
String part2s = ipv6.substring(compressIndex + 1);
BigInteger part1 = ipv6ToNum(part1s);
BigInteger part2 = ipv6ToNum(part2s);
int part1hasDot = 0;
char ch[] = part1s.toCharArray();
for (char c : ch) {
if (c == ':') {
part1hasDot++;
}
}
return part1.shiftLeft(16 * (7 - part1hasDot)).add(part2);
}
String[] str = ipv6.split(":");
BigInteger big = BigInteger.ZERO;
for (int i = 0; i < str.length; i++) {
if (str[i].isEmpty()) {
str[i] = "0";
}
big = big.add(BigInteger.valueOf(Long.valueOf(str[i], 16))
.shiftLeft(16 * (str.length - i - 1)));
}
return big;
}
/**
* @Description: 将BigInteger的IPV6还原
* @author xj
* @date 创建时间:2017-12-6 上午9:57:03
* @param SIP
* @return
* @version V1.0
*/
public static String int2ipv6(String num) {
BigInteger big = new BigInteger(num);
String str = "";
BigInteger ff = BigInteger.valueOf(0xffff);
for (int i = 0; i < 8; i++) {
str = big.and(ff).toString(16) + ":" + str;
big = big.shiftRight(16);
}
str = str.substring(0, str.length() - 1);
return str;
}
/**
* 将10进制的IPV4转成标准IP格式
*
* @param longIP
* 10进制的IP数
* @return 返回标准IP格式
*/
public static String longToIP(Long longIP)
// 将10进制整数形式转换成127.0.0.1形式的IP地址
{
StringBuffer sb = new StringBuffer("");
// 直接右移24位
sb.append(String.valueOf(longIP >>> 24));
sb.append(".");
// 将高8位置0，然后右移16位
sb.append(String.valueOf((longIP & 0x00FFFFFF) >>> 16));
sb.append(".");
sb.append(String.valueOf((longIP & 0x0000FFFF) >>> 8));
sb.append(".");
sb.append(String.valueOf(longIP & 0x000000FF));
return sb.toString();
}
public static void main(String[] args) {
String ip1 = "1.1.1.1";
String ip2 = "1.1.1.12";
System.out.println(ip2Num(ip1));
System.out.println(ip2Num(ip2));
System.out.println(compareIP(ip1, ip2));
System.out.println(longToIP(Long.valueOf(ip2Num(ip1))));
ip1 = "1::0";
ip2 = "1::1";
System.out.println(ip2Num(ip1));
System.out.println(ip2Num(ip2));
System.out.println(compareIP(ip2, ip1));
System.out.println(int2ipv6(ip2Num(ip1)));
}
}