哪位帮忙写个网站来访计数器！

哪位帮忙小弟写个网站来访计数器！防刷新页面增加次数的，一个IP只能刷一次的那种！ :arrow:

Filter
Map

在doFilter
1、首先获取ip
2、查找map中是否存在
3、如果不存在 + 1 chain.doFilter
4、response输出错误。

获取ip的工具类

package cn.javass.ssonline.client.util;

import javax.servlet.http.HttpServletRequest;

public class IpUtil {
private IpUtil() {
}

public static String getIpAddr(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("X-Forwarded-For");
    }
    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("X-Real-IP");
    }

    if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        ip = request.getRemoteAddr();
    }
    return ip;
}

}

用插件啊，很简单
http://iknowyouask.com/76.html