SpringBootBlog/src/main/java/cc/bnblogs/utils/CookieUtil.java

package cc.bnblogs.utils;

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

/**
 * @author zfp@bnblogs.cc
 * @createTime: 2022/10/21
 * @desciption: cookie工具类
 */
public class CookieUtil {
    public static String getCookie(HttpServletRequest request, String cookieName) {

        Cookie[] cookies = request.getCookies();
        if (cookies != null) {
            for (Cookie cookie : cookies) {
                if (cookie.getName().equals(cookieName)) {
                    return cookie.getValue();
                }
            }
        }
        return null;
    }

    public static void setCookie(HttpServletResponse response, String cookieName, String value, int cookieMaxAge) {
        Cookie cookie = new Cookie(cookieName, value);
        cookie.setPath("/");
        cookie.setMaxAge(cookieMaxAge);
        response.addCookie(cookie);
    }

    public static void setCookie(HttpServletResponse response, String cookieName, String value) {
        // 有效期为1天
        setCookie(response, cookieName, value,  24 * 60 * 60);
    }

    public static void deleteCookie(HttpServletResponse response, String cookieName) {
        setCookie(response, cookieName, null, 0);
    }
}