如何通过Java代码在存在Nginx等代理的情况下，准确获取用户请求的真实IP地址？

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获取用户真实IP，兼容nginx等反向代理，获取客户端IP地址：javapublic static String getIp(HttpServletRequest request) { String ipAddress=null; // ipAddress=this.getRequest().getRemoteAddr(); * * * @return */ }

获取用户的真实ip，兼容有nginx 等反向代理的工具

/** * 获取客户端的IP地址 * * @return */ public static String getIp(HttpServletRequest request) { String ipAddress = null; // ipAddress = this.getRequest().getRemoteAddr(); ipAddress = request.getHeader("X-Real-IP"); if(ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) { 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(); if (ipAddress.equals("127.0.0.1")) { // 根据网卡取本机配置的IP InetAddress inet = null; try { inet = InetAddress.getLocalHost(); } catch (UnknownHostException e) { e.printStackTrace(); } ipAddress = inet.getHostAddress(); } } // 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 if (ipAddress != null && ipAddress.length() > 15) { // "***.***.***.***".length() if (ipAddress.indexOf(",") > 0) { ipAddress = ipAddress.substring(0, ipAddress.indexOf(",")); } } System.out.println("ip为:"+ipAddress); return ipAddress; }