java从cookie中取值 java获取cookie指定值

用户1750537

发布于 2025-08-29 14:17:09

8700

代码可运行

运行总次数：0

代码可运行

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;

public class CookieUtils {
    public static String getCookieValue(HttpServletRequest request, String cookieName) {
        String cookieValue = null;
        Cookie[] cookies = request.getCookies();
        if (cookies != null) {
            for (Cookie cookie : cookies) {
                if (cookie.getName().equals(cookieName)) {
                    cookieValue = cookie.getValue();
                    break;
                }
            }
        }
        return cookieValue;
    }
}

使用示例：

import javax.servlet.http.HttpServletRequest;

public class MainServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String username = CookieUtils.getCookieValue(request, "username");
        // 使用username的值进行其他逻辑处理
    }
}

在cookie中查找名为"username"的cookie，并将其值存储在username变量中。

本文参与腾讯云自媒体同步曝光计划，分享自作者个人站点/博客。

原始发表：2025-08-28，如有侵权请联系 cloudcommunity@tencent.com 删除

java