// 클라이언트 IP 주소 가져오기
public static String getClientIP(HttpServletRequest request) {
String ip = request.getHeader("X-Forwarded-For");
if (ip == null) {
ip = request.getHeader("Proxy-Client-IP");
}
if (ip == null) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if (ip == null) {
ip = request.getHeader("HTTP_CLIENT_IP");
}
if (ip == null) {
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
}
if (ip == null) {
ip = request.getRemoteAddr();
}
return ip;
}