求助大佬们， docker 内的 springboot 项目如何获取 http 请求的真实 ip？

现有代码如下：

 public static String getIpAddress(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; } 

目前测试服务器，没有 Nginx ，没有域名解析，直接请求服务器的 ip+端口的，实际最后都是走到 ip = request.getRemoteAddr()，然后取到的是 172 开头的 docker 内网 ip ，试了试--net=host 也不管用，访问不通了就，不太懂 docker 网络这块，求助大佬们。