1 public static String getIpAddr(HttpServletRequest request) {
2 String ipAddress = request.getHeader("x-forwarded-for");
3 if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
4 ipAddress = request.getHeader("Proxy-Client-IP");
5 }
6 if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
7 ipAddress = request.getHeader("WL-Proxy-Client-IP");
8 }
9 if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
10 ipAddress = request.getRemoteAddr();
11 String localIp = "127.0.0.1";
12 String localIpv6 = "0:0:0:0:0:0:0:1";
13 if (ipAddress.equals(localIp) || ipAddress.equals(localIpv6)) {
14 // 根据网卡取本机配置的IP
15 InetAddress inet = null;
16 try {
17 inet = InetAddress.getLocalHost();
18 ipAddress = inet.getHostAddress();
19 } catch (UnknownHostException e) {
20 e.printStackTrace();
21 }
22 }
23 }
24 // 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
25 String ipSeparate = ",";
26 int ipLength = 15;
27 if (ipAddress != null && ipAddress.length() > ipLength) {
28 if (ipAddress.indexOf(ipSeparate) > 0) {
29 ipAddress = ipAddress.substring(0, ipAddress.indexOf(ipSeparate));
30 }
31 }
32 return ipAddress;
33 }
