我测试好了
java 里写
/** * 获取客户端ip地址(可以穿透代理) * * @param request * @return */ public static String getRemoteAddr(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; } private static final String[] HEADERS_TO_TRY = { "X-Forwarded-For", "Proxy-Client-IP", "WL-Proxy-Client-IP", "HTTP_X_FORWARDED_FOR", "HTTP_X_FORWARDED", "HTTP_X_CLUSTER_CLIENT_IP", "HTTP_CLIENT_IP", "HTTP_FORWARDED_FOR", "HTTP_FORWARDED", "HTTP_VIA", "REMOTE_ADDR", "X-Real-IP"};