1 package com.guodu.common.core.utils.ip;
2
3 import java.net.InetAddress;
4 import java.net.UnknownHostException;
5 import java.util.regex.Matcher;
6 import java.util.regex.Pattern;
7 import javax.servlet.http.HttpServletRequest;
8
9 import com.guodu.common.core.utils.StringUtils;
10
11 /**
12 * 获取IP方法
13 *
14 * @author guodu
15 */
16 public class IpUtils {
17 public static String getIpAddr(HttpServletRequest request) {
18 String ip = null;
19
20 // X-Forwarded-For：Squid 服务代理
21 String ipAddresses = request.getHeader("X-Forwarded-For");
22 if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
23 // Proxy-Client-IP：apache 服务代理
24 ipAddresses = request.getHeader("Proxy-Client-IP");
25 }
26 if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
27 // WL-Proxy-Client-IP：weblogic 服务代理
28 ipAddresses = request.getHeader("WL-Proxy-Client-IP");
29 }
30 if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
31 // HTTP_CLIENT_IP：有些代理服务器
32 ipAddresses = request.getHeader("HTTP_CLIENT_IP");
33 }
34 if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
35 // X-Real-IP：nginx服务代理
36 ipAddresses = request.getHeader("X-Real-IP");
37 }
38
39 // 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
40 if (ipAddresses != null && ipAddresses.length() != 0) {
41 ip = ipAddresses.split(",")[0];
42 }
43
44 // 还是不能获取到，最后再通过request.getRemoteAddr();获取
45 if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
46 ip = request.getRemoteAddr();
47 }
48 return ip.equals("0:0:0:0:0:0:0:1") ? "127.0.0.1" : ip;
49 }
50
51 public static boolean internalIp(String ip) {
52 byte[] addr = textToNumericFormatV4(ip);
53 return internalIp(addr) || "127.0.0.1".equals(ip);
54 }
55
56 private static boolean internalIp(byte[] addr) {
57 if (StringUtils.isNull(addr) || addr.length < 2) {
58 return true;
59 }
60 final byte b0 = addr[0];
61 final byte b1 = addr[1];
62 // 10.x.x.x/8
63 final byte SECTION_1 = 0x0A;
64 // 172.16.x.x/12
65 final byte SECTION_2 = (byte) 0xAC;
66 final byte SECTION_3 = (byte) 0x10;
67 final byte SECTION_4 = (byte) 0x1F;
68 // 192.168.x.x/16
69 final byte SECTION_5 = (byte) 0xC0;
70 final byte SECTION_6 = (byte) 0xA8;
71 switch (b0) {
72 case SECTION_1:
73 return true;
74 case SECTION_2:
75 if (b1 >= SECTION_3 && b1 <= SECTION_4) {
76 return true;
77 }
78 case SECTION_5:
79 switch (b1) {
80 case SECTION_6:
81 return true;
82 }
83 default:
84 return false;
85 }
86 }
87
88 /**
89 * 将IPv4地址转换成字节
90 *
91 * @param text IPv4地址
92 * @return byte 字节
93 */
94 public static byte[] textToNumericFormatV4(String text) {
95 if (text.length() == 0) {
96 return null;
97 }
98
99 byte[] bytes = new byte[4];
100 String[] elements = text.split("\\.", -1);
101 try {
102 long l;
103 int i;
104 switch (elements.length) {
105 case 1:
106 l = Long.parseLong(elements[0]);
107 if ((l < 0L) || (l > 4294967295L)) {
108 return null;
109 }
110 bytes[0] = (byte) (int) (l >> 24 & 0xFF);
111 bytes[1] = (byte) (int) ((l & 0xFFFFFF) >> 16 & 0xFF);
112 bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF);
113 bytes[3] = (byte) (int) (l & 0xFF);
114 break;
115 case 2:
116 l = Integer.parseInt(elements[0]);
117 if ((l < 0L) || (l > 255L)) {
118 return null;
119 }
120 bytes[0] = (byte) (int) (l & 0xFF);
121 l = Integer.parseInt(elements[1]);
122 if ((l < 0L) || (l > 16777215L)) {
123 return null;
124 }
125 bytes[1] = (byte) (int) (l >> 16 & 0xFF);
126 bytes[2] = (byte) (int) ((l & 0xFFFF) >> 8 & 0xFF);
127 bytes[3] = (byte) (int) (l & 0xFF);
128 break;
129 case 3:
130 for (i = 0; i < 2; ++i) {
131 l = Integer.parseInt(elements[i]);
132 if ((l < 0L) || (l > 255L)) {
133 return null;
134 }
135 bytes[i] = (byte) (int) (l & 0xFF);
136 }
137 l = Integer.parseInt(elements[2]);
138 if ((l < 0L) || (l > 65535L)) {
139 return null;
140 }
141 bytes[2] = (byte) (int) (l >> 8 & 0xFF);
142 bytes[3] = (byte) (int) (l & 0xFF);
143 break;
144 case 4:
145 for (i = 0; i < 4; ++i) {
146 l = Integer.parseInt(elements[i]);
147 if ((l < 0L) || (l > 255L)) {
148 return null;
149 }
150 bytes[i] = (byte) (int) (l & 0xFF);
151 }
152 break;
153 default:
154 return null;
155 }
156 } catch (NumberFormatException e) {
157 return null;
158 }
159 return bytes;
160 }
161
162 public static String getHostIp() {
163 try {
164 return InetAddress.getLocalHost().getHostAddress();
165 } catch (UnknownHostException e) {
166 }
167 return "127.0.0.1";
168 }
169
170 public static String getHostName() {
171 try {
172 return InetAddress.getLocalHost().getHostName();
173 } catch (UnknownHostException e) {
174 }
175 return "未知";
176 }
177
178 /**
179 * 校验IP有效性
180 * @param ip
181 * @return
182 */
183 public static Boolean ipMatch(String ip){
184 Pattern pattern = Pattern.compile("\\b((?!\\d\\d\\d)\\d+|1\\d\\d|2[0-4]\\d|25[0-5])\\.((?!\\d\\d\\d)\\d+|1\\d\\d|2[0-4]\\d|25[0-5])\\.((?!\\d\\d\\d)\\d+|1\\d\\d|2[0-4]\\d|25[0-5])\\.((?!\\d\\d\\d)\\d+|1\\d\\d|2[0-4]\\d|25[0-5])\\b");
185 Matcher matcher = pattern.matcher(ip);
186 if(!matcher.matches()){
187 return Boolean.FALSE;
188 }
189 return Boolean.TRUE;
190 }
191 }
浙公网安备 33010602011771号