com.github.hugh.util.ip.IpUtils Maven / Gradle / Ivy
package com.github.hugh.util.ip;
import com.github.hugh.util.regex.RegexUtils;
import javax.servlet.http.HttpServletRequest;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
/**
* IP工具类
*
* @author hugh
* @since 1.0.4
*/
public class IpUtils {
private IpUtils() {
}
/**
* IP点号分隔符
*/
private static final String REGEX_IP = "\\.";
/**
* 获取用户真实IP地址,不使用request.getRemoteAddr();的原因是有可能用户使用了代理软件方式避免真实IP地址
*
* 可是,如果通过了多级反向代理的话,X-Forwarded-For的值并不止一个,而是一串IP值,究竟哪个才是真正的用户端的真实IP呢?
* 答案是取X-Forwarded-For中第一个非unknown的有效IP字符串。
*
* 如:X-Forwarded-For:192.168.1.110, 192.168.1.120, 192.168.1.130, 192.168.1.100
*
* 用户真实IP为: 192.168.1.110
*
* @param request http请求
* @return String ip
*/
public static String get(HttpServletRequest request) {
// X-Forwarded-For:Squid 服务代理
String ip = request.getHeader("x-forwarded-for");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
// Proxy-Client-IP:apache 服务代理
ip = request.getHeader("Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
// WL-Proxy-Client-IP:weblogic 服务代理
ip = request.getHeader("WL-Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
// HTTP_CLIENT_IP:有些代理服务器
ip = request.getHeader("HTTP_CLIENT_IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
// X-Real-IP:nginx服务代理
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
}
// 有些网络通过多层代理,那么获取到的ip就会有多个,一般都是通过逗号(,)分割开来,并且第一个ip为客户端的真实IP
if (ip != null && ip.length() != 0) {
ip = ip.split(",")[0];
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
return ip;
}
/**
* 随机生成国内IP地址
*
* @return String ip
*/
public static String random() {
// ip范围
int[][] range = {{607649792, 608174079}, // 36.56.0.0-36.63.255.255
{1038614528, 1039007743}, // 61.232.0.0-61.237.255.255
{1783627776, 1784676351}, // 106.80.0.0-106.95.255.255
{2035023872, 2035154943}, // 121.76.0.0-121.77.255.255
{2078801920, 2079064063}, // 123.232.0.0-123.235.255.255
{-1950089216, -1948778497}, // 139.196.0.0-139.215.255.255
{-1425539072, -1425014785}, // 171.8.0.0-171.15.255.255
{-1236271104, -1235419137}, // 182.80.0.0-182.92.255.255
{-770113536, -768606209}, // 210.25.0.0-210.47.255.255
{-569376768, -564133889}, // 222.16.0.0-222.95.255.255
};
Random random = new Random();
int index = random.nextInt(10);
return num2ip(range[index][0] + new Random().nextInt(range[index][1] - range[index][0]));
}
/**
* 将十进制转换成ip地址
*
* @param ip IP
* @return String
*/
private static String num2ip(int ip) {
int[] b = new int[4];
b[0] = ((ip >> 24) & 0xff);
b[1] = ((ip >> 16) & 0xff);
b[2] = ((ip >> 8) & 0xff);
b[3] = (ip & 0xff);
return b[0] + "." + b[1] + "." + b[2] + "." + b[3];
}
/**
* 功能:判断一个IP是不是在一个网段下的
* 格式:isInRange("192.168.8.3", "192.168.9.10/22");
*
* @param ip IP
* @param cidr
* @return boolean
* @since 1.7.2
*/
public static boolean isInRange(String ip, String cidr) {
String[] ips = ip.split(REGEX_IP);
int ipAddr = (Integer.parseInt(ips[0]) << 24)
| (Integer.parseInt(ips[1]) << 16)
| (Integer.parseInt(ips[2]) << 8) | Integer.parseInt(ips[3]);
int type = Integer.parseInt(cidr.replaceAll(".*/", ""));
int mask = 0xFFFFFFFF << (32 - type);
String cidrIp = cidr.replaceAll("/.*", "");
String[] cidrIps = cidrIp.split(REGEX_IP);
int cidrIpAddr = (Integer.parseInt(cidrIps[0]) << 24)
| (Integer.parseInt(cidrIps[1]) << 16)
| (Integer.parseInt(cidrIps[2]) << 8)
| Integer.parseInt(cidrIps[3]);
return (ipAddr & mask) == (cidrIpAddr & mask);
}
/**
* 功能:根据位数返回IP总数
* 格式:parseIpMaskRange("192.192.192.1", "23")
*
* @param mask 掩码
* @return int
* @since 1.7.2
*/
public static int getIpCount(String mask) {
return BigDecimal.valueOf(Math.pow(2, 32 - Integer.parseInt(mask))).setScale(0, BigDecimal.ROUND_DOWN).intValue();//IP总数,去小数点
}
/**
* 把long类型的Ip转为一般Ip类型:xx.xx.xx.xx
*
* @param ip IP
* @return String
* @since 1.7.2
*/
public static String getIpFromLong(Long ip) {
String s1 = String.valueOf((ip & 4278190080L) / 16777216L);
String s2 = String.valueOf((ip & 16711680L) / 65536L);
String s3 = String.valueOf((ip & 65280L) / 256L);
String s4 = String.valueOf(ip & 255L);
return s1 + "." + s2 + "." + s3 + "." + s4;
}
/**
* 把xx.xx.xx.xx类型的转为long类型的
*
* @param ip IP
* @return long
* @since 1.7.2
*/
public static Long getIpFromString(String ip) {
String ipTemp = ip;
long ipLong = Long.parseLong(ipTemp.substring(0, ipTemp.indexOf('.')));
ipTemp = ipTemp.substring(ipTemp.indexOf('.') + 1);
ipLong = ipLong * 256
+ Long.parseLong(ipTemp.substring(0, ipTemp.indexOf('.')));
ipTemp = ipTemp.substring(ipTemp.indexOf(".") + 1);
ipLong = ipLong * 256
+ Long.parseLong(ipTemp.substring(0, ipTemp.indexOf('.')));
ipTemp = ipTemp.substring(ipTemp.indexOf('.') + 1);
ipLong = ipLong * 256 + Long.parseLong(ipTemp);
return ipLong;
}
/**
* 根据掩码位获取掩码
*
* @param maskBit 掩码位数,如"28"、"30"
* @return String
* @since 1.7.2
*/
public static String getMaskByMaskBit(String maskBit) {
return "".equals(maskBit) ? "error, maskBit is null !" : getNetmask(maskBit);
}
/**
* 根据 ip/掩码位 计算IP段的起始IP 如 IP串 218.240.38.69/30
*
* @param ip 给定的IP,如218.240.38.69
* @param maskBit 给定的掩码位,如30
* @return String 起始IP的字符串表示
* @since 1.7.2
*/
public static String calcBeginIp(String ip, String maskBit) {
return getIpFromLong(getBeginIpLong(ip, maskBit));
}
/**
* 根据 ip/掩码位 计算IP段的起始IP 如 IP串 218.240.38.69/30
*
* @param ip 给定的IP,如218.240.38.69
* @param maskBit 给定的掩码位,如30
* @return long 起始IP的长整型表示
* @since 1.7.2
*/
public static Long getBeginIpLong(String ip, String maskBit) {
return getIpFromString(ip) & getIpFromString(getMaskByMaskBit(maskBit));
}
/**
* 根据 ip/掩码位 计算IP段的终止IP 如 IP串 218.240.38.69/30
*
* @param ip 给定的IP,如218.240.38.69
* @param maskBit 给定的掩码位,如30
* @return String 终止IP的字符串表示
* @since 1.7.2
*/
public static String calcEndIp(String ip, String maskBit) {
return getIpFromLong(getEndIpLong(ip, maskBit));
}
/**
* 根据 ip/掩码位 计算IP段的终止IP 如 IP串 218.240.38.69/30
*
* @param ip 给定的IP,如218.240.38.69
* @param maskBit 给定的掩码位,如30
* @return long 终止IP的长整型表示
* @since 1.7.2
*/
public static Long getEndIpLong(String ip, String maskBit) {
return getBeginIpLong(ip, maskBit)
+ ~getIpFromString(getMaskByMaskBit(maskBit));
}
/**
* 根据掩码位获取子网掩码
*
* @param maskBit 掩码位 1-32
* @return String netmask
* @since 1.7.2
*/
public static String getNetmask(String maskBit) {
switch (maskBit) {
case "1":
return "128.0.0.0";
case "2":
return "192.0.0.0";
case "3":
return "224.0.0.0";
case "4":
return "240.0.0.0";
case "5":
return "248.0.0.0";
case "6":
return "252.0.0.0";
case "7":
return "254.0.0.0";
case "8":
return "255.0.0.0";
case "9":
return "255.128.0.0";
case "10":
return "255.192.0.0";
case "11":
return "255.224.0.0";
case "12":
return "255.240.0.0";
case "13":
return "255.248.0.0";
case "14":
return "255.252.0.0";
case "15":
return "255.254.0.0";
case "16":
return "255.255.0.0";
case "17":
return "255.255.128.0";
case "18":
return "255.255.192.0";
case "19":
return "255.255.224.0";
case "20":
return "255.255.240.0";
case "21":
return "255.255.248.0";
case "22":
return "255.255.252.0";
case "23":
return "255.255.254.0";
case "24":
return "255.255.255.0";
case "25":
return "255.255.255.128";
case "26":
return "255.255.255.192";
case "27":
return "255.255.255.224";
case "28":
return "255.255.255.240";
case "29":
return "255.255.255.248";
case "30":
return "255.255.255.252";
case "31":
return "255.255.255.254";
case "32":
return "255.255.255.255";
default:
return "-1";
}
}
/**
* 根据IP和位数(掩码)返回该IP网段的所有IP
*
格式:parseIpMaskRange("192.192.192.1.", "23")
*
* @param ip ip
* @param mask 掩码
* @return List IP网段的所有IP
* @since 1.7.2
*/
public static List parseIpMaskRange(String ip, String mask) {
List list = new ArrayList<>();
if ("32".equals(mask)) {
list.add(ip);
} else {
String startIp = getBeginIpStr(ip, mask);
String endIp = calcEndIp(ip, mask);
if (!"31".equals(mask)) {
String subStart = startIp.split(REGEX_IP)[0] + "." + startIp.split(REGEX_IP)[1] + "." + startIp.split(REGEX_IP)[2] + ".";
String subEnd = endIp.split(REGEX_IP)[0] + "." + endIp.split(REGEX_IP)[1] + "." + endIp.split(REGEX_IP)[2] + ".";
startIp = subStart + (Integer.parseInt(startIp.split(REGEX_IP)[3]) + 1);
endIp = subEnd + (Integer.parseInt(endIp.split(REGEX_IP)[3]) - 1);
}
list = parseIpRange(startIp, endIp);
}
return list;
}
/**
* 转换ip范围
*
* @param startIp 起始IP地址
* @param endIp 结束IP地址
* @return List 起始与结束范围内的所有IP
* @since 1.7.2
*/
public static List parseIpRange(String startIp, String endIp) {
List ips = new ArrayList<>();
String[] startIpArr = startIp.split(REGEX_IP);
String[] endIpArr = endIp.split(REGEX_IP);
int[] int_ipf = new int[4];
int[] int_ipt = new int[4];
for (int i = 0; i < 4; i++) {
int_ipf[i] = Integer.parseInt(startIpArr[i]);
int_ipt[i] = Integer.parseInt(endIpArr[i]);
}
for (int A = int_ipf[0]; A <= int_ipt[0]; A++) {
for (int B = (A == int_ipf[0] ? int_ipf[1] : 0); B <= (A == int_ipt[0] ? int_ipt[1]
: 255); B++) {
for (int C = (B == int_ipf[1] ? int_ipf[2] : 0); C <= (B == int_ipt[1] ? int_ipt[2]
: 255); C++) {
for (int D = (C == int_ipf[2] ? int_ipf[3] : 0); D <= (C == int_ipt[2] ? int_ipt[3]
: 255); D++) {
ips.add(A + "." + B + "." + C + "." + D);
}
}
}
}
return ips;
}
/**
* 根据 ip/掩码位 计算IP段的起始IP 如 IP串 218.240.38.69/30
*
* @param ip 给定的IP,如218.240.38.69
* @param maskBit 给定的掩码位,如30
* @return String 起始IP的字符串表示
* @since 1.7.2
*/
public static String getBeginIpStr(String ip, String maskBit) {
return getIpFromLong(getBeginIpLong(ip, maskBit));
}
/**
* 比较两个ip地址是否在同一个网段中
*
* -
* IP地址范围: 0.0.0.0~255.255.255.255,包括了mask地址。 IP地址划分
*
* -
* A类地址:1.0.0.1~126.255.255.254 B类地址:128.0.0.1~191.255.255.254
*
* -
* C类地址:192.168.0.0~192.168.255.255 D类地址:224.0.0.1~239.255.255.254
*
* -
* E类地址:240.0.0.1~255.255.255.254 如何判断两个IP地址是否是同一个网段中:
*
* -
* 要判断两个IP地址是不是在同一个网段,就将它们的IP地址分别与子网掩码做与运算,得到的结果一网路号,如果网路号相同,就在同一子网,否则,不在同一子网。
*
* -
* 例:假定选择了子网掩码255.255.254.0,现在分别将上述两个IP地址分别与掩码做与运算,如下图所示:
*
* -
* 211.95.165.24 11010011 01011111 10100101 00011000
*
* -
* 255.255.254.0 11111111 11111111 111111110 00000000
*
* -
* 与的结果是:
* 11010011 01011111 10100100 00000000
*
* -
* 211.95.164.78 11010011 01011111 10100100 01001110
*
* -
* 255.255.254.0 11111111 11111111 111111110 00000000
*
* -
* 与的结果是:
* 11010011 01011111 10100100 00000000
*
* -
* 可以看出,得到的结果(这个结果就是网路地址)都是一样的,因此可以判断这两个IP地址在同一个子网。
* 如果没有进行子网划分,A类网路的子网掩码为255.0.0.0,B类网路的子网掩码为255.255.0.0,C类网路的子网掩码为255.255.255.0,预设情况子网掩码为255.255.255.0
*
*
*
* @param ip1 第一个IP地址
* @param ip2 第二个IP地址
* @param mask 子网掩码
* @return boolean
* @since 2.0.3
*/
public static boolean isSameNetworkSegment(String ip1, String ip2, String mask) {
if (RegexUtils.isNotIp(ip1)) {
return false;
}
if (RegexUtils.isNotIp(ip2)) {
return false;
}
int maskInt = getIpV4Value(mask);
int ipValue1 = getIpV4Value(ip1);
int ipValue2 = getIpV4Value(ip2);
return (maskInt & ipValue1) == (maskInt & ipValue2);
}
/**
* 两个IP不在同一网段内
*
* @param ip1 第一个IP地址
* @param ip2 第二个IP地址
* @param mask 子网掩码
* @return boolean
* @see #isSameNetworkSegment(String, String, String)
* @since 2.0.5
*/
public static boolean isNotSameNetworkSegment(String ip1, String ip2, String mask) {
return !isSameNetworkSegment(ip1, ip2, mask);
}
/**
* 计算ipv4 地址int值
*
* @param ipOrMask ip或子网掩码
* @return int
* @since 2.0.3
*/
public static int getIpV4Value(String ipOrMask) {
byte[] addr = getIpV4Bytes(ipOrMask);
int address1 = addr[3] & 0xFF;
address1 |= ((addr[2] << 8) & 0xFF00);
address1 |= ((addr[1] << 16) & 0xFF0000);
address1 |= ((addr[0] << 24) & 0xFF000000);
return address1;
}
/**
* 获取ipV4的位元组
*
* @param ipOrMask ip或子网掩码
* @return byte[]
* @since 2.0.3
*/
public static byte[] getIpV4Bytes(String ipOrMask) {
try {
String[] addrs = ipOrMask.split("\\.");
int length = addrs.length;
byte[] addr = new byte[length];
for (int index = 0; index < length; index++) {
addr[index] = (byte) (Integer.parseInt(addrs[index]) & 0xff);
}
return addr;
} catch (Exception e) {
}
return new byte[4];
}
}