Javaを使用してCMSシステムのトラフィック統計機能を実装する方法

package com.example.cms;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet(name = "TrafficServlet", urlPatterns = {"/traffic"})
public class TrafficServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // 获取访问者的 IP 地址
        String ip = request.getRemoteAddr();

        // 获取访问页面的 URL
        String url = request.getRequestURL().toString();

        // 获取访问页面的标题
        String title = request.getParameter("title");

        // 记录访问者的访问信息
        TrafficManager.getInstance().record(ip, url, title);

        // 设置 Cookie，记录访问者的访问次数
        Cookie[] cookies = request.getCookies();
        boolean cookieExists = false;
        int visits = 1;
        if (cookies != null) {
            for (Cookie cookie : cookies) {
                if (cookie.getName().equals("visits")) {
                    cookieExists = true;
                    visits = Integer.parseInt(cookie.getValue());
                    visits++;
                    cookie.setValue(String.valueOf(visits));
                    response.addCookie(cookie);
                }
            }
        }
        if (!cookieExists) {
            Cookie cookie = new Cookie("visits", String.valueOf(visits));
            response.addCookie(cookie);
        }

        // 返回访问页面的内容
        response.setContentType("text/html;charset=utf-8");
        response.getWriter().println("<h1>欢迎访问 " + title + "</h1>");
        response.getWriter().println("<p>您是第 " + visits + " 次访问该页面</p>");
    }
}