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@@ -0,0 +1,196 @@
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+package com.dayou.utils;
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+
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+import javax.servlet.http.HttpServletRequest;
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+import java.net.*;
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+import java.text.MessageFormat;
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+import java.util.Enumeration;
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+import java.util.Objects;
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+
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+/**
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+ * 获取IP方法
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+ *
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+ * @author ruoyi
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+ */
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+public class IpUtils {
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+ public static String getIpAddr(HttpServletRequest request) {
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+ if (request == null) {
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+ return "unknown";
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+ }
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+ String ip = request.getHeader("x-forwarded-for");
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+ if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
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+ ip = request.getHeader("Proxy-Client-IP");
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+ }
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+ if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
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+ ip = request.getHeader("X-Forwarded-For");
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+ }
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+ if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
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+ ip = request.getHeader("WL-Proxy-Client-IP");
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+ }
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+ if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
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+ ip = request.getHeader("X-Real-IP");
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+ }
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+
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+ if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
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+ ip = request.getRemoteAddr();
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+ }
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+
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+ if (Objects.isNull(ip) || ip.isEmpty()) {
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+ return "127.0.0.1";
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+ }
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+
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+ return "0:0:0:0:0:0:0:1".equals(ip) ? "127.0.0.1" : ip.split(",")[0];
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+ }
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+
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+ public static boolean internalIp(String ip) {
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+ byte[] addr = textToNumericFormatV4(ip);
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+ if (null != addr) {
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+ return internalIp(addr) || "127.0.0.1".equals(ip);
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+ }
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+ return false;
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+ }
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+
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+ private static boolean internalIp(byte[] addr) {
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+ final byte b0 = addr[0];
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+ final byte b1 = addr[1];
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+ // 10.x.x.x/8
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+ final byte SECTION_1 = 0x0A;
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+ // 172.16.x.x/12
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+ final byte SECTION_2 = (byte) 0xAC;
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+ final byte SECTION_3 = (byte) 0x10;
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+ final byte SECTION_4 = (byte) 0x1F;
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+ // 192.168.x.x/16
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+ final byte SECTION_5 = (byte) 0xC0;
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+ final byte SECTION_6 = (byte) 0xA8;
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+ switch (b0) {
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+ case SECTION_1:
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+ return true;
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+ case SECTION_2:
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+ if (b1 >= SECTION_3 && b1 <= SECTION_4) {
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+ return true;
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+ }
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+ case SECTION_5:
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+ switch (b1) {
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+ case SECTION_6:
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+ return true;
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+ default:
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+ break;
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+ }
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+ default:
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+ return false;
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+ }
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+ }
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+
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+ /**
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+ * 将IPv4地址转换成字节
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+ *
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+ * @param text IPv4地址
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+ * @return byte 字节
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+ */
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+ public static byte[] textToNumericFormatV4(String text) {
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+ if (text.length() == 0) {
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+ return null;
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+ }
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+
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+ byte[] bytes = new byte[4];
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+ String[] elements = text.split("\\.", -1);
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+ try {
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+ long l;
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+ int i;
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+ switch (elements.length) {
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+ case 1:
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+ l = Long.parseLong(elements[0]);
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+ if ((l < 0L) || (l > 4294967295L)) {
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+ return null;
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+ }
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+ bytes[0] = (byte) (int) (l >> 24 & 0xFF);
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+ bytes[1] = (byte) (int) ((l & 0xFFFFFF) >> 16 & 0xFF);
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+ bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF);
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+ bytes[3] = (byte) (int) (l & 0xFF);
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+ break;
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+ case 2:
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+ l = Integer.parseInt(elements[0]);
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+ if ((l < 0L) || (l > 255L)) {
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+ return null;
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+ }
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+ bytes[0] = (byte) (int) (l & 0xFF);
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+ l = Integer.parseInt(elements[1]);
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+ if ((l < 0L) || (l > 16777215L)) {
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+ return null;
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+ }
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+ bytes[1] = (byte) (int) (l >> 16 & 0xFF);
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+ bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF);
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+ bytes[3] = (byte) (int) (l & 0xFF);
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+ break;
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+ case 3:
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+ for (i = 0; i < 2; ++i) {
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+ l = Integer.parseInt(elements[i]);
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+ if ((l < 0L) || (l > 255L)) {
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+ return null;
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+ }
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+ bytes[i] = (byte) (int) (l & 0xFF);
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+ }
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+ l = Integer.parseInt(elements[2]);
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+ if ((l < 0L) || (l > 65535L)) {
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+ return null;
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+ }
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+ bytes[2] = (byte) (int) (l >> 8 & 0xFF);
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+ bytes[3] = (byte) (int) (l & 0xFF);
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+ break;
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+ case 4:
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+ for (i = 0; i < 4; ++i) {
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+ l = Integer.parseInt(elements[i]);
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+ if ((l < 0L) || (l > 255L)) {
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+ return null;
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+ }
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+ bytes[i] = (byte) (int) (l & 0xFF);
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+ }
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+ break;
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+ default:
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+ return null;
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+ }
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+ } catch (NumberFormatException e) {
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+ return null;
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+ }
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+ return bytes;
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+ }
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+
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+ public static String getHostIp() {
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+ try {
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+ Enumeration<NetworkInterface> networks = NetworkInterface.getNetworkInterfaces();
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+ while (networks.hasMoreElements()) {
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+ Enumeration<InetAddress> addrs = networks.nextElement().getInetAddresses();
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+ while (addrs.hasMoreElements()) {
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+ InetAddress ip = addrs.nextElement();
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+ System.out.println("ip="+ip.getHostAddress());
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+ System.out.println(MessageFormat.format("{0},{1},{2}",ip instanceof Inet4Address,!ip.isSiteLocalAddress(),!ip.isLoopbackAddress()));
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+ if (ip instanceof Inet4Address && !ip.isLoopbackAddress()) {
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+ // 从网卡获取外网IP
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+ System.out.println("return ip="+ip.getHostAddress());
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+ return ip.getHostAddress();
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+ }
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+ }
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+ }
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+ } catch (SocketException e) {
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+ e.printStackTrace();
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+ }
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+
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+
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+ try {
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+ return InetAddress.getLocalHost().getHostAddress();
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+ } catch (UnknownHostException e) {
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+ }
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+ return "127.0.0.1";
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+ }
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+
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+ public static String getHostName() {
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+ try {
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+ return InetAddress.getLocalHost().getHostName();
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+ } catch (UnknownHostException e) {
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+ }
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+ return "未知";
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+ }
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+
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+ public static void main(String[] args) {
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+ System.out.println(getHostIp());
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+ }
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+}
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