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| | |
| | | package com.dy.common.util; |
| | | |
| | | import jakarta.servlet.http.HttpServletRequest; |
| | | |
| | | import java.net.InetAddress; |
| | | import java.net.NetworkInterface; |
| | | import java.net.UnknownHostException; |
| | | import java.util.Enumeration; |
| | | import java.util.regex.Matcher; |
| | | import java.util.regex.Pattern; |
| | | |
| | | /** |
| | | * 获取IP方法 |
| | | * |
| | | * @author liurunyu |
| | | */ |
| | | public class IPUtils { |
| | | |
| | | /** |
| | | * 检查IP是否合法 |
| | | * |
| | | * @param ip |
| | | * @return |
| | | */ |
| | | public static boolean ipValid(String ip) { |
| | | String regex0 = "(2[0-4]\\d)" + "|(25[0-5])"; |
| | | String regex1 = "1\\d{2}"; |
| | | String regex2 = "[1-9]\\d"; |
| | | String regex3 = "\\d"; |
| | | String regex = "(" + regex0 + ")|(" + regex1 + ")|(" + regex2 + ")|(" + regex3 + ")"; |
| | | regex = "(" + regex + ").(" + regex + ").(" + regex + ").(" + regex + ")"; |
| | | Pattern p = Pattern.compile(regex); |
| | | Matcher m = p.matcher(ip); |
| | | return m.matches(); |
| | | } |
| | | |
| | | /** |
| | | * 获取本地ip 适合windows与linux |
| | | * |
| | | * @return |
| | | */ |
| | | public static String getLocalIP() { |
| | | String localIP = "127.0.0.1"; |
| | | try { |
| | | Enumeration netInterfaces = NetworkInterface.getNetworkInterfaces(); |
| | | while (netInterfaces.hasMoreElements()) { |
| | | NetworkInterface ni = (NetworkInterface) netInterfaces.nextElement(); |
| | | InetAddress ip = ni.getInetAddresses().nextElement(); |
| | | if (!ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == -1) { |
| | | localIP = ip.getHostAddress(); |
| | | break; |
| | | } |
| | | } |
| | | } catch (Exception e) { |
| | | try { |
| | | localIP = InetAddress.getLocalHost().getHostAddress(); |
| | | } catch (UnknownHostException e1) { |
| | | e1.printStackTrace(); |
| | | } |
| | | } |
| | | return localIP; |
| | | } |
| | | /** |
| | | * 获取客户端IP |
| | | * |
| | | * @param request 请求对象 |
| | | * @return IP地址 |
| | | */ |
| | | public static String getClientIp(HttpServletRequest request) |
| | | { |
| | | if (request == null) |
| | | { |
| | | return "unknown"; |
| | | } |
| | | String ip = request.getHeader("x-forwarded-for"); |
| | | if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) |
| | | { |
| | | ip = request.getHeader("Proxy-Client-IP"); |
| | | } |
| | | if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) |
| | | { |
| | | ip = request.getHeader("X-Forwarded-For"); |
| | | } |
| | | if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) |
| | | { |
| | | ip = request.getHeader("WL-Proxy-Client-IP"); |
| | | } |
| | | if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) |
| | | { |
| | | ip = request.getHeader("X-Real-IP"); |
| | | } |
| | | |
| | | if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) |
| | | { |
| | | ip = request.getRemoteAddr(); |
| | | } |
| | | |
| | | return "0:0:0:0:0:0:0:1".equals(ip) ? "127.0.0.1" : getMultistageReverseProxyIp(ip); |
| | | } |
| | | |
| | | /** |
| | | * 检查是否为内部IP地址 |
| | | * |
| | | * @param ip IP地址 |
| | | * @return 结果 |
| | | */ |
| | | public static boolean internalIp(String ip) |
| | | { |
| | | byte[] addr = textToNumericFormatV4(ip); |
| | | return internalIp(addr) || "127.0.0.1".equals(ip); |
| | | } |
| | | |
| | | /** |
| | | * 检查是否为内部IP地址 |
| | | * |
| | | * @param addr byte地址 |
| | | * @return 结果 |
| | | */ |
| | | private static boolean internalIp(byte[] addr) |
| | | { |
| | | if (addr == null || addr.length < 2) |
| | | { |
| | | return true; |
| | | } |
| | | final byte b0 = addr[0]; |
| | | final byte b1 = addr[1]; |
| | | // 10.x.x.x/8 |
| | | final byte SECTION_1 = 0x0A; |
| | | // 172.16.x.x/12 |
| | | final byte SECTION_2 = (byte) 0xAC; |
| | | final byte SECTION_3 = (byte) 0x10; |
| | | final byte SECTION_4 = (byte) 0x1F; |
| | | // 192.168.x.x/16 |
| | | final byte SECTION_5 = (byte) 0xC0; |
| | | final byte SECTION_6 = (byte) 0xA8; |
| | | switch (b0) |
| | | { |
| | | case SECTION_1: |
| | | return true; |
| | | case SECTION_2: |
| | | if (b1 >= SECTION_3 && b1 <= SECTION_4) |
| | | { |
| | | return true; |
| | | } |
| | | case SECTION_5: |
| | | switch (b1) |
| | | { |
| | | case SECTION_6: |
| | | return true; |
| | | } |
| | | default: |
| | | return false; |
| | | } |
| | | } |
| | | /** |
| | | * 把ip转化为整数 |
| | | * |
| | | * @param ip |
| | | * @return |
| | | */ |
| | | public static long translateIP2Int(String ip) { |
| | | String[] intArr = ip.split("\\."); |
| | | int[] ipInt = new int[intArr.length]; |
| | | for (int i = 0; i < intArr.length; i++) { |
| | | ipInt[i] = Integer.parseInt(intArr[i]) ; |
| | | } |
| | | return ipInt[0] * 256 * 256 * 256 + +ipInt[1] * 256 * 256 + ipInt[2] * 256 + ipInt[3]; |
| | | } |
| | | /** |
| | | * 将IPv4地址转换成字节 |
| | | * |
| | | * @param text IPv4地址 |
| | | * @return byte 字节 |
| | | */ |
| | | public static byte[] textToNumericFormatV4(String text) |
| | | { |
| | | if (text.length() == 0) |
| | | { |
| | | return null; |
| | | } |
| | | |
| | | byte[] bytes = new byte[4]; |
| | | String[] elements = text.split("\\.", -1); |
| | | try |
| | | { |
| | | long l; |
| | | int i; |
| | | switch (elements.length) |
| | | { |
| | | case 1: |
| | | l = Long.parseLong(elements[0]); |
| | | if ((l < 0L) || (l > 4294967295L)) |
| | | { |
| | | return null; |
| | | } |
| | | bytes[0] = (byte) (int) (l >> 24 & 0xFF); |
| | | bytes[1] = (byte) (int) ((l & 0xFFFFFF) >> 16 & 0xFF); |
| | | bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF); |
| | | bytes[3] = (byte) (int) (l & 0xFF); |
| | | break; |
| | | case 2: |
| | | l = Integer.parseInt(elements[0]); |
| | | if ((l < 0L) || (l > 255L)) |
| | | { |
| | | return null; |
| | | } |
| | | bytes[0] = (byte) (int) (l & 0xFF); |
| | | l = Integer.parseInt(elements[1]); |
| | | if ((l < 0L) || (l > 16777215L)) |
| | | { |
| | | return null; |
| | | } |
| | | bytes[1] = (byte) (int) (l >> 16 & 0xFF); |
| | | bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF); |
| | | bytes[3] = (byte) (int) (l & 0xFF); |
| | | break; |
| | | case 3: |
| | | for (i = 0; i < 2; ++i) |
| | | { |
| | | l = Integer.parseInt(elements[i]); |
| | | if ((l < 0L) || (l > 255L)) |
| | | { |
| | | return null; |
| | | } |
| | | bytes[i] = (byte) (int) (l & 0xFF); |
| | | } |
| | | l = Integer.parseInt(elements[2]); |
| | | if ((l < 0L) || (l > 65535L)) |
| | | { |
| | | return null; |
| | | } |
| | | bytes[2] = (byte) (int) (l >> 8 & 0xFF); |
| | | bytes[3] = (byte) (int) (l & 0xFF); |
| | | break; |
| | | case 4: |
| | | for (i = 0; i < 4; ++i) |
| | | { |
| | | l = Integer.parseInt(elements[i]); |
| | | if ((l < 0L) || (l > 255L)) |
| | | { |
| | | return null; |
| | | } |
| | | bytes[i] = (byte) (int) (l & 0xFF); |
| | | } |
| | | break; |
| | | default: |
| | | return null; |
| | | } |
| | | } |
| | | catch (NumberFormatException e) |
| | | { |
| | | return null; |
| | | } |
| | | return bytes; |
| | | } |
| | | |
| | | /** |
| | | * 获取IP地址 |
| | | * |
| | | * @return 本地IP地址 |
| | | */ |
| | | public static String getHostIp() |
| | | { |
| | | try |
| | | { |
| | | return InetAddress.getLocalHost().getHostAddress(); |
| | | } |
| | | catch (UnknownHostException e) |
| | | { |
| | | } |
| | | return "127.0.0.1"; |
| | | } |
| | | |
| | | /** |
| | | * 获取主机名 |
| | | * |
| | | * @return 本地主机名 |
| | | */ |
| | | public static String getHostName() |
| | | { |
| | | try |
| | | { |
| | | return InetAddress.getLocalHost().getHostName(); |
| | | } |
| | | catch (UnknownHostException e) |
| | | { |
| | | } |
| | | return "未知"; |
| | | } |
| | | |
| | | /** |
| | | * 从多级反向代理中获得第一个非unknown IP地址 |
| | | * |
| | | * @param ip 获得的IP地址 |
| | | * @return 第一个非unknown IP地址 |
| | | */ |
| | | public static String getMultistageReverseProxyIp(String ip) |
| | | { |
| | | // 多级反向代理检测 |
| | | if (ip != null && ip.indexOf(",") > 0) |
| | | { |
| | | final String[] ips = ip.trim().split(","); |
| | | for (String subIp : ips) |
| | | { |
| | | if (false == isUnknown(subIp)) |
| | | { |
| | | ip = subIp; |
| | | break; |
| | | } |
| | | } |
| | | } |
| | | return ip; |
| | | } |
| | | |
| | | /** |
| | | * 检测给定字符串是否为未知,多用于检测HTTP请求相关 |
| | | * |
| | | * @param checkString 被检测的字符串 |
| | | * @return 是否未知 |
| | | */ |
| | | public static boolean isUnknown(String checkString) |
| | | { |
| | | return isBlank(checkString) || "unknown".equalsIgnoreCase(checkString); |
| | | } |
| | | |
| | | private static boolean isBlank(final CharSequence cs) { |
| | | final int strLen = length(cs); |
| | | if (strLen == 0) { |
| | | return true; |
| | | } |
| | | for (int i = 0; i < strLen; i++) { |
| | | if (!Character.isWhitespace(cs.charAt(i))) { |
| | | return false; |
| | | } |
| | | } |
| | | return true; |
| | | } |
| | | public static int length(final CharSequence cs) { |
| | | return cs == null ? 0 : cs.length(); |
| | | } |
| | | } |