JavaでクライアントIPアドレスを取得する方法

2015年12月20日

サンプルコード：
private static String getIpAddr(HttpServletRequest request) {
String ip = request.getHeader(“X-Real-IP");
if(ip == null || ip.length() == 0 || “unknown".equalsIgnoreCase(ip)) { ip = request.getHeader(“Proxy-Client-IP");
}
if(ip == null || ip.length() == 0 || “unknown".equalsIgnoreCase(ip)) { ip = request.getHeader(“WL-Proxy-Client-IP");
}
if(ip == null || ip.length() == 0 || “unknown".equalsIgnoreCase(ip)) { ip = request.getRemoteAddr();
}
return ip;
}
}