Question

javaee web程序如何获得客户端的真实ip?

Answer 1

/** * 获得客户端真实IP地址 * * @param request * @return */ public static String getIpAddr(HttpServletRequest request) { String ip = request.getHeader("X-Forwarded-For"); 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.getHeader("HTTP_CLIENT_IP"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("HTTP_X_FORWARDED_FOR"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getRemoteAddr(); } return ip; }

Answer 2

public String getIpAddr(HttpServletRequest request) {
if (request.getHeader("x-forwarded-for") == null) {

return request.getRemoteAddr();
}
return request.getHeader("x-forwarded-for");
}