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://price.kuche.com:8053; }
}

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 : "";
}