public static String getIpAddr(HttpServletRequest request) {
String ipAddress = request.getHeader("x-forwarded-for");
if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
ipAddress = request.getHeader("Proxy-Client-IP");
}
if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
ipAddress = request.getHeader("WL-Proxy-Client-IP");
}
if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
ipAddress = request.getRemoteAddr();
String localIp = "127.0.0.1";
String localIpv6 = "0:0:0:0:0:0:0:1";
if (ipAddress.equals(localIp) || ipAddress.equals(localIpv6)) {
// 根据网卡取本机配置的IP
InetAddress inet = null;
try {
inet = InetAddress.getLocalHost();
ipAddress = inet.getHostAddress();
} catch (UnknownHostException e) {
e.printStackTrace();
}
}
}
// 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
String ipSeparate = ",";
int ipLength = 15;
if (ipAddress != null && ipAddress.length() > ipLength) {
if (ipAddress.indexOf(ipSeparate) > 0) {
ipAddress = ipAddress.substring(0, ipAddress.indexOf(ipSeparate));
}
}
return ipAddress;
}
