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 : "";
	}