对应博主秒杀项目之秒杀商品展示及商品秒杀

package com.zking.zmall.util; import lombok.extern.slf4j.Slf4j; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import java.net.URLEncoder; @Slf4j public class CookieUtils { /** * * @Description: 得到Cookie的值, 不编码 * @param request * @param cookieName * @return */ public static String getCookieValue(HttpServletRequest request, String cookieName) { return getCookieValue(request, cookieName, false); } /** * * @Description: 得到Cookie的值 * @param request * @param cookieName * @param isDecoder * @return */ public static String getCookieValue(HttpServletRequest request, String cookieName, boolean isDecoder) { Cookie[] cookieList = request.getCookies(); if (cookieList == null || cookieName == null) { return null; } String retValue = null; try { for (int i = 0; i < cookieList.length; i++) { if (cookieList[i].getName().equals(cookieName)) { if (isDecoder) { retValue = URLDecoder.decode(cookieList[i].getValue(), "UTF-8"); } else { retValue = cookieList[i].getValue(); } break; } } } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return retValue; } /** * * @Description: 得到Cookie的值 * @param request * @param cookieName * @param encodeString * @return */ public static String getCookieValue(HttpServletRequest request, String cookieName, String encodeString) { Cookie[] cookieList = request.getCookies(); if (cookieList == null || cookieName == null) { return null; } String retValue = null; try { for (int i = 0; i < cookieList.length; i++) { if (cookieList[i].getName().equals(cookieName)) { retValue = URLDecoder.decode(cookieList[i].getValue(), encodeString); break; } } } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return retValue; } /** * * @Description: 设置Cookie的值 不设置生效时间默认浏览器关闭即失效,也不编码 * @param request * @param response * @param cookieName * @param cookieValue */ public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName, String cookieValue) { setCookie(request, response, cookieName, cookieValue, -1); } /** * * @Description: 设置Cookie的值 在指定时间内生效,但不编码 * @param request * @param response * @param cookieName * @param cookieValue * @param cookieMaxage */ public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName, String cookieValue, int cookieMaxage) { setCookie(request, response, cookieName, cookieValue, cookieMaxage, false); } /** * * @Description: 设置Cookie的值 不设置生效时间,但编码 * 在服务器被创建，返回给客户端，并且保存客户端 * 如果设置了SETMAXAGE(int seconds)，会把cookie保存在客户端的硬盘中 * 如果没有设置，会默认把cookie保存在浏览器的内存中 * 一旦设置setPath()：只能通过设置的路径才能获取到当前的cookie信息 * @param request * @param response * @param cookieName * @param cookieValue * @param isEncode */ public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName, String cookieValue, boolean isEncode) { setCookie(request, response, cookieName, cookieValue, -1, isEncode); } /** * * @Description: 设置Cookie的值 在指定时间内生效, 编码参数 * @param request * @param response * @param cookieName * @param cookieValue * @param cookieMaxage * @param isEncode */ public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName, String cookieValue, int cookieMaxage, boolean isEncode) { doSetCookie(request, response, cookieName, cookieValue, cookieMaxage, isEncode); } /** * * @Description: 设置Cookie的值 在指定时间内生效, 编码参数(指定编码) * @param request * @param response * @param cookieName * @param cookieValue * @param cookieMaxage * @param encodeString */ public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName, String cookieValue, int cookieMaxage, String encodeString) { doSetCookie(request, response, cookieName, cookieValue, cookieMaxage, encodeString); } /** * * @Description: 删除Cookie带cookie域名 * @param request * @param response * @param cookieName */ public static void deleteCookie(HttpServletRequest request, HttpServletResponse response, String cookieName) { doSetCookie(request, response, cookieName, null, -1, false); } /** * * @Description: 设置Cookie的值，并使其在指定时间内生效 * @param request * @param response * @param cookieName * @param cookieValue * @param cookieMaxage cookie生效的最大秒数 * @param isEncode */ private static final void doSetCookie(HttpServletRequest request, HttpServletResponse response, String cookieName, String cookieValue, int cookieMaxage, boolean isEncode) { try { if (cookieValue == null) { cookieValue = ""; } else if (isEncode) { cookieValue = URLEncoder.encode(cookieValue, "utf-8"); } Cookie cookie = new Cookie(cookieName, cookieValue); if (cookieMaxage > 0) cookie.setMaxAge(cookieMaxage); if (null != request) {// 设置域名的cookie String domainName = getDomainName(request); log.info("========== domainName: {} ==========", domainName); if (!"localhost".equals(domainName)) { cookie.setDomain(domainName); } } cookie.setPath("/"); response.addCookie(cookie); } catch (Exception e) { e.printStackTrace(); } } /** * * @Description: 设置Cookie的值，并使其在指定时间内生效 * @param request * @param response * @param cookieName * @param cookieValue * @param cookieMaxage cookie生效的最大秒数 * @param encodeString */ private static final void doSetCookie(HttpServletRequest request, HttpServletResponse response, String cookieName, String cookieValue, int cookieMaxage, String encodeString) { try { if (cookieValue == null) { cookieValue = ""; } else { cookieValue = URLEncoder.encode(cookieValue, encodeString); } Cookie