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 : "";
}
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