nginx后的tomcat获取真实用户ip

目前大部分获取ip的方式：beat.getRequest().getRemoteAddr()
但是，如果通过nginx反向代理的话，就获取不到真实ip，是获取的nginx的ip

需要：添加    proxy_set_header  X-Real-IP  $remote_addr; 

 

   server {

        listen       80;

        server_name  price.kuche.com;

        location / {

            root   html;

          proxy_set_header  X-Real-IP  $remote_addr;

            proxy_pass http:backServers;

         }

   }

添加一个表头声明

然后这样取

    public static String getRemoteAddrIp(HttpServletRequest request) {

        String ipFromNginx = getHeader(request, "X-Real-IP");

        System.out.println("ipFromNginx:" + ipFromNginx);

        System.out.println("getRemoteAddr:" + request.getRemoteAddr());

        return StringUtil.isEmpty(ipFromNginx) ? request.getRemoteAddr() : ipFromNginx;

    }





    private static String getHeader(HttpServletRequest request, String headName) {

        String value = request.getHeader(headName);

        return !StringUtils.isBlank(value) && !"unknown".equalsIgnoreCase(value) ? value : "";

    }