{"id":2515,"date":"2022-12-13T13:20:57","date_gmt":"2022-12-13T05:20:57","guid":{"rendered":"https:\/\/qaqaq.top\/?p=2515"},"modified":"2022-12-19T20:47:02","modified_gmt":"2022-12-19T12:47:02","slug":"cookie-%e4%bb%80%e4%b9%88%e6%98%afcookie%e3%80%81cookie-cookie%e7%9a%84%e5%88%9b%e5%bb%ba%e3%80%81cookie-cookie%e7%9a%84%e8%8e%b7%e5%8f%96%e3%80%81cookie-cookie%e5%80%bc%e7%9a%84%e4%bf%ae%e6%94%b9","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=2515","title":{"rendered":"Cookie-\u4ec0\u4e48\u662fCookie\u3001Cookie\u7684\u521b\u5efa\u3001Cookie\u7684\u83b7\u53d6\u3001Cookie\u503c\u7684\u4fee\u6539\u3001\u8c37\u6b4c\u548c\u706b\u72d0\u6d4f\u89c8\u5668\u5982\u4f55\u67e5\u770bCookie\u3001Cookie\u7684\u5b58\u6d3b\u8bbe\u7f6e\u3001Cookie\u7684path\u5c5e\u6027\u3001Cookie\u7ec3\u4e60\u4e4b\u514d\u7528\u6237\u540d\u767b\u5f55"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">Cookie \u997c\u5e72<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">a)\u4ec0\u4e48\u662f Cookie?<\/h2>\n\n\n\n<p>1\u3001Cookie \u7ffb\u8bd1\u8fc7\u6765\u662f\u997c\u5e72\u7684\u610f\u601d\u3002<br>2\u3001Cookie \u662f\u670d\u52a1\u5668\u901a\u77e5\u5ba2\u6237\u7aef\u4fdd\u5b58\u952e\u503c\u5bf9\u7684\u4e00\u79cd\u6280\u672f\u3002<br>3\u3001\u5ba2\u6237\u7aef\u6709\u4e86 Cookie \u540e\uff0c\u6bcf\u6b21\u8bf7\u6c42\u90fd\u53d1\u9001\u7ed9\u670d\u52a1\u5668\u3002<br>4\u3001\u6bcf\u4e2a Cookie \u7684\u5927\u5c0f\u4e0d\u80fd\u8d85\u8fc7 4kb<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">b)\u5982\u4f55\u521b\u5efa Cookie<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-221.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"932\" height=\"388\" data-original=\"https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-221.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2516\"  sizes=\"(max-width: 932px) 100vw, 932px\" \/><\/div><\/figure>\n\n\n\n<p>Servlet \u7a0b\u5e8f\u4e2d\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    protected void createCookie(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        \/\/ 1. \u521b\u5efaCookie\u5bf9\u8c61\n        Cookie cookie = new Cookie(\"key1\",\"value1\");\n        \/\/ 2. \u901a\u77e5\u5ba2\u6237\u7aef\u4fdd\u5b58Cookie\n        resp.addCookie(cookie);\n\n        \/\/ 1. \u521b\u5efaCookie\u5bf9\u8c61\n        Cookie cookie1 = new Cookie(\"key2\",\"value2\");\n        \/\/ 2. \u901a\u77e5\u5ba2\u6237\u7aef\u4fdd\u5b58Cookie\n        resp.addCookie(cookie1);\n\n        resp.getWriter().write(\"Cookie\u521b\u5efa\u6210\u529f\");\n    }<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">c)\u670d\u52a1\u5668\u5982\u4f55\u83b7\u53d6 Cookie<\/h2>\n\n\n\n<p>\u670d\u52a1\u5668\u83b7\u53d6\u5ba2\u6237\u7aef\u7684 Cookie \u53ea\u9700\u8981\u4e00\u884c\u4ee3\u7801\uff1areq.getCookies():Cookie[]<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-222.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"877\" height=\"322\" data-original=\"https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-222.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2517\"  sizes=\"(max-width: 877px) 100vw, 877px\" \/><\/div><\/figure>\n\n\n\n<p>Cookie \u7684\u5de5\u5177\u7c7b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>package top.qaqaq.util;\n\nimport jakarta.servlet.http.Cookie;\n\n\/**\n * @author RichieZhang\n * @create 2022-12-12 \u4e0b\u5348 9:32\n *\/\npublic class CookieUtils {\n\n    \/**\n     * \u67e5\u627e\u6307\u5b9a\u540d\u79f0\u7684Cookie\u5bf9\u8c61\n     * @param name\n     * @param cookies\n     * @return\n     *\/\n    public static Cookie findCookie(String name, Cookie&#91;] cookies) {\n        if (name == null || cookies == null || cookies.length == 0) {\n            return null;\n        }\n\n        for (Cookie cookie : cookies) {\n            if (name.equals(cookie.getName())) {\n                return cookie;\n            }\n        }\n        return null;\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>Servlet \u7a0b\u5e8f\u4e2d\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code> protected void getCookie(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n\n        Cookie&#91;] cookies = req.getCookies();\n        for (Cookie cookie : cookies) {\n            \/\/ getName\u65b9\u6cd5\u8fd4\u56deCookie\u7684key\uff08\u540d\uff09\n            \/\/ getValue\u65b9\u6cd5\u8fd4\u56deCookie\u7684Value\u503c\n            resp.getWriter().write(\"Cookie&#91;\" + cookie.getName() + \"=\" + cookie.getValue() + \"] &lt;br\/&gt;\");\n\n        }\n\n        Cookie iWantCookie = CookieUtils.findCookie(\"key1\",cookies);\n\n\/\/        for (Cookie cookie : cookies) {\n\/\/            if (\"key2\".equals(cookie.getName())) {\n\/\/                iWantCookie = cookie;\n\/\/                break;\n\/\/            }\n\/\/\n\/\/        }\n\n        \/\/ \u5982\u679c\u4e0d\u7b49\u4e8enull\uff0c\u8bf4\u660e\u8d4b\u8fc7\u503c\uff0c\u4e5f\u5c31\u662f\u627e\u5230\u4e86\u9700\u8981\u7684Cookie\n        if (iWantCookie != null) {\n\n            resp.getWriter().write(\"\u627e\u5230\u4e86\u9700\u8981\u7684Cookie\");\n\n        }\n\n    }<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">d)Cookie \u503c\u7684\u4fee\u6539<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>    protected void updateCookie(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        \/\/\u65b9\u6848\u4e00\uff1a\n        \/\/1. \u5148\u521b\u5efa\u4e00\u4e2a\u8981\u4fee\u6539\u7684\u540c\u540d\u7684Cookie\u5bf9\u8c61\n        \/\/2. \u5728\u6784\u9020\u5668\uff0c\u540c\u65f6\u8d4b\u4e88\u65b0\u7684Cookie\u503c\u3002\n        Cookie cookie = new Cookie(\"key1\",\"newValue1\");\n        \/\/3. \u8c03\u7528response.addCookie( Cookie ); \u901a\u77e5 \u5ba2\u6237\u7aef \u4fdd\u5b58\u4fee\u6539\n        resp.addCookie(cookie);\n\n        resp.getWriter().write(\"key1\u7684Cookie\u5df2\u7ecf\u4fee\u6539\u597d\");\n\n        \/\/\u65b9\u6848\u4e8c\uff1a\n        \/\/1. \u5148\u67e5\u627e\u9700\u8981\u4fee\u6539\u7684Cookie\u5bf9\u8c61\n        Cookie cookie1 = CookieUtils.findCookie(\"key2\",req.getCookies());\n        if (cookie1 != null){\n            \/\/2. \u8c03\u7528setValue()\u65b9\u6cd5\u8d4b\u4e88\u65b0\u7684Cookie\u503c\u3002\n            cookie1.setValue(\"newValue2\");\n            \/\/3. \u8c03\u7528response.addCookie()\u901a\u77e5\u5ba2\u6237\u7aef\u4fdd\u5b58\u4fee\u6539\n            resp.addCookie(cookie1);\n        }\n\n        resp.getWriter().write(\"key2\u7684Cookie\u5df2\u7ecf\u4fee\u6539\u597d\");\n    }<\/code><\/pre>\n\n\n\n<p>\u65b9\u6848\u4e00\uff1a<br>1\u3001\u5148\u521b\u5efa\u4e00\u4e2a\u8981\u4fee\u6539\u7684\u540c\u540d\uff08\u6307\u7684\u5c31\u662f key\uff09\u7684 Cookie \u5bf9\u8c61<br>2\u3001\u5728\u6784\u9020\u5668\uff0c\u540c\u65f6\u8d4b\u4e8e\u65b0\u7684 Cookie \u503c\u3002<br>3\u3001\u8c03\u7528 response.addCookie( Cookie );<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>        \/\/\u65b9\u6848\u4e00\uff1a\n        \/\/1. \u5148\u521b\u5efa\u4e00\u4e2a\u8981\u4fee\u6539\u7684\u540c\u540d\u7684Cookie\u5bf9\u8c61\n        \/\/2. \u5728\u6784\u9020\u5668\uff0c\u540c\u65f6\u8d4b\u4e88\u65b0\u7684Cookie\u503c\u3002\n        Cookie cookie = new Cookie(\"key1\",\"newValue1\");\n        \/\/3. \u8c03\u7528response.addCookie( Cookie ); \u901a\u77e5 \u5ba2\u6237\u7aef \u4fdd\u5b58\u4fee\u6539\n        resp.addCookie(cookie);<\/code><\/pre>\n\n\n\n<p>\u65b9\u6848\u4e8c\uff1a<br>1\u3001\u5148\u67e5\u627e\u5230\u9700\u8981\u4fee\u6539\u7684 Cookie \u5bf9\u8c61<br>2\u3001\u8c03\u7528 setValue()\u65b9\u6cd5\u8d4b\u4e8e\u65b0\u7684 Cookie \u503c\u3002<br>3\u3001\u8c03\u7528 response.addCookie()\u901a\u77e5\u5ba2\u6237\u7aef\u4fdd\u5b58\u4fee\u6539<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>        \/\/\u65b9\u6848\u4e8c\uff1a\n        \/\/1. \u5148\u67e5\u627e\u9700\u8981\u4fee\u6539\u7684Cookie\u5bf9\u8c61\n        Cookie cookie1 = CookieUtils.findCookie(\"key2\",req.getCookies());\n        if (cookie1 != null){\n            \/\/2. \u8c03\u7528setValue()\u65b9\u6cd5\u8d4b\u4e88\u65b0\u7684Cookie\u503c\u3002\n            cookie.setValue(\"newValue2\");\n            \/\/3. \u8c03\u7528response.addCookie()\u901a\u77e5\u5ba2\u6237\u7aef\u4fdd\u5b58\u4fee\u6539\n            resp.addCookie(cookie);\n        }<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">e)\u6d4f\u89c8\u5668\u67e5\u770b Cookie\uff1a<\/h2>\n\n\n\n<p>\u8c37\u6b4c\u6d4f\u89c8\u5668\u5982\u4f55\u67e5\u770b Cookie\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-223.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"948\" height=\"323\" data-original=\"https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-223.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2518\"  sizes=\"(max-width: 948px) 100vw, 948px\" \/><\/div><\/figure>\n\n\n\n<p>\u706b\u72d0\u6d4f\u89c8\u5668\u5982\u4f55\u67e5\u770b Cookie\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-224-1024x201.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"201\" data-original=\"https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-224-1024x201.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2519\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">f) Cookie \u751f\u547d\u63a7\u5236<\/h2>\n\n\n\n<p>Cookie \u7684\u751f\u547d\u63a7\u5236\u6307\u7684\u662f\u5982\u4f55\u7ba1\u7406 Cookie \u4ec0\u4e48\u65f6\u5019\u88ab\u9500\u6bc1\uff08\u5220\u9664\uff09<\/p>\n\n\n\n<p>setMaxAge()<br>\u6b63\u6570\uff0c\u8868\u793a\u5728\u6307\u5b9a\u7684\u79d2\u6570\u540e\u8fc7\u671f<br>\u8d1f\u6570\uff0c\u8868\u793a\u6d4f\u89c8\u5668\u4e00\u5173\uff0cCookie \u5c31\u4f1a\u88ab\u5220\u9664\uff08\u9ed8\u8ba4\u503c\u662f-1\uff09<br>\u96f6\uff0c\u8868\u793a\u9a6c\u4e0a\u5220\u9664 Cookie<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    \/**\n     * \u8bbe\u7f6e\u5b58\u6d3b 1 \u4e2a\u5c0f\u65f6\u7684 CooKie\n     * @param req\n     * @param resp\n     * @throws ServletException\n     * @throws IOException\n     *\/\n    protected void life3600(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        Cookie cookie = new Cookie(\"life3600\",\"life3600\");\n        cookie.setMaxAge(60 * 60);  \/\/\u8bbe\u7f6eCookie\u4e00\u5c0f\u65f6\u4e4b\u540e\u88ab\u5220\u9664\u3002\u65e0\u6548\n        resp.addCookie(cookie);\n\n        resp.getWriter().write(\"\u5df2\u7ecf\u521b\u5efa\u4e86\u4e00\u4e2a\u5b58\u6d3b\u4e00\u5c0f\u65f6\u7684Cookie\");\n    }\n\n    \/**\n     * \u9a6c\u4e0a\u5220\u9664\u4e00\u4e2a Cookie\n     * @param req\n     * @param resp\n     * @throws ServletException\n     * @throws IOException\n     *\/\n    protected void deleteNow(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        \/\/ \u5148\u627e\u5230\u4f60\u8981\u5220\u9664\u7684Cookie\u5bf9\u8c61\n        Cookie cookie = CookieUtils.findCookie(\"key1\",req.getCookies());\n        if (cookie != null) {\n            \/\/ \u8c03\u7528SetMaxAge(0);\n            cookie.setMaxAge(0);  \/\/ \u8868\u793a\u9a6c\u4e0a\u5220\u9664\uff0c\u90fd\u4e0d\u9700\u8981\u7b49\u5f85\u6d4f\u89c8\u5668\u5173\u95ed\n            \/\/ \u8c03\u7528response.addCookie(cookie);\n            resp.addCookie(cookie);\n\n            resp.getWriter().write(\"key1\u7684Cookie\u5df2\u7ecf\u88ab\u5220\u9664\");\n        }\n    }\n\n    \/**\n     * \u9ed8\u8ba4\u7684\u4f1a\u8bdd\u7ea7\u522b\u7684 Cookie\n     * @param req\n     * @param resp\n     * @throws ServletException\n     * @throws IOException\n     *\/\n    protected void defalutLife(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        Cookie cookie = new Cookie(\"defaultLife\",\"defaultLife\");\n        cookie.setMaxAge(-1);\/\/ \u8bbe\u7f6e\u5b58\u6d3b\u65f6\u95f4\n        resp.addCookie(cookie);\n    }<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">g)Cookie \u6709\u6548\u8def\u5f84 Path \u7684\u8bbe\u7f6e<\/h2>\n\n\n\n<p>Cookie \u7684 path \u5c5e\u6027\u53ef\u4ee5\u6709\u6548\u7684\u8fc7\u6ee4\u54ea\u4e9b Cookie \u53ef\u4ee5\u53d1\u9001\u7ed9\u670d\u52a1\u5668\u3002\u54ea\u4e9b\u4e0d\u53d1\u3002<br>path \u5c5e\u6027\u662f\u901a\u8fc7\u8bf7\u6c42\u7684\u5730\u5740\u6765\u8fdb\u884c\u6709\u6548\u7684\u8fc7\u6ee4\u3002<\/p>\n\n\n\n<p>CookieA path=\/\u5de5\u7a0b\u8def\u5f84<br>CookieB path=\/\u5de5\u7a0b\u8def\u5f84\/abc<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u8bf7\u6c42\u5730\u5740\u5982\u4e0b\uff1a\nhttp:&#47;&#47;ip:port\/\u5de5\u7a0b\u8def\u5f84\/a.html\nCookieA \u53d1\u9001\nCookieB \u4e0d\u53d1\u9001<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>http:&#47;&#47;ip:port\/\u5de5\u7a0b\u8def\u5f84\/abc\/a.html\nCookieA \u53d1\u9001\nCookieB \u53d1\u9001<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>    protected void testPath(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        Cookie cookie = new Cookie(\"path1\",\"path1\");\n        \/\/ getContextPath() ===&gt;&gt;&gt;&gt; \u5f97\u5230\u5de5\u7a0b\u8def\u5f84\n        cookie.setPath(req.getContextPath() + \"\/abc\"); \/\/ ===&gt;&gt;&gt;&gt; \/\u5de5\u7a0b\u8def\u5f84\/abc\n        resp.addCookie(cookie);\n        resp.getWriter().write(\"\u521b\u5efa\u4e86\u4e00\u4e2a\u5e26\u6709Path\u8def\u5f84\u7684Cookie\");\n    }<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">cookie.html<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.01 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/html4\/loose.dtd\"&gt;\n&lt;html&gt;\n&lt;head&gt;\n&lt;meta http-equiv=\"pragma\" content=\"no-cache\" \/&gt;\n&lt;meta http-equiv=\"cache-control\" content=\"no-cache\" \/&gt;\n&lt;meta http-equiv=\"Expires\" content=\"0\" \/&gt;\n&lt;meta http-equiv=\"Content-Type\" content=\"text\/html; charset=UTF-8\"&gt;\n&lt;title&gt;Cookie&lt;\/title&gt;\n\t&lt;base href=\"http:\/\/localhost:8080\/JavaWeb_Code_Cookie\/\" \/&gt;\n&lt;style type=\"text\/css\"&gt;\n\n\tul li {\n\t\tlist-style: none;\n\t}\n\t\n&lt;\/style&gt;\n&lt;\/head&gt;\n&lt;body&gt;\n\t&lt;iframe name=\"target\" width=\"500\" height=\"500\" style=\"float: left;\"&gt;&lt;\/iframe&gt;\n\t&lt;div style=\"float: left;\"&gt;\n\t\t&lt;ul&gt;\n\t\t\t&lt;li&gt;&lt;a href=\"cookieServlet?action=createCookie\" target=\"target\"&gt;Cookie\u7684\u521b\u5efa&lt;\/a&gt;&lt;\/li&gt;\n\t\t\t&lt;li&gt;&lt;a href=\"cookieServlet?action=getCookie\" target=\"target\"&gt;Cookie\u7684\u83b7\u53d6&lt;\/a&gt;&lt;\/li&gt;\n\t\t\t&lt;li&gt;&lt;a href=\"cookieServlet?action=updateCookie\" target=\"target\"&gt;Cookie\u503c\u7684\u4fee\u6539&lt;\/a&gt;&lt;\/li&gt;\n\t\t\t&lt;li&gt;Cookie\u7684\u5b58\u6d3b\u5468\u671f&lt;\/li&gt;\n\t\t\t&lt;li&gt;\n\t\t\t\t&lt;ul&gt;\n\t\t\t\t\t&lt;li&gt;&lt;a href=\"cookieServlet?action=defalutLife\" target=\"target\"&gt;Cookie\u7684\u9ed8\u8ba4\u5b58\u6d3b\u65f6\u95f4\uff08\u4f1a\u8bdd\uff09&lt;\/a&gt;&lt;\/li&gt;\n\t\t\t\t\t&lt;li&gt;&lt;a href=\"cookieServlet?action=deleteNow\" target=\"target\"&gt;Cookie\u7acb\u5373\u5220\u9664&lt;\/a&gt;&lt;\/li&gt;\n\t\t\t\t\t&lt;li&gt;&lt;a href=\"cookieServlet?action=life3600\" target=\"target\"&gt;Cookie\u5b58\u6d3b3600\u79d2\uff081\u5c0f\u65f6\uff09&lt;\/a&gt;&lt;\/li&gt;\n\t\t\t\t&lt;\/ul&gt;\n\t\t\t&lt;\/li&gt;\n\t\t\t&lt;li&gt;&lt;a href=\"cookieServlet?action=testPath\" target=\"target\"&gt;Cookie\u7684\u8def\u5f84\u8bbe\u7f6e&lt;\/a&gt;&lt;\/li&gt;\n\t\t\t&lt;li&gt;&lt;a href=\"\" target=\"target\"&gt;Cookie\u7684\u7528\u6237\u514d\u767b\u5f55\u7ec3\u4e60&lt;\/a&gt;&lt;\/li&gt;\n\t\t&lt;\/ul&gt;\n\t&lt;\/div&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">h) Cookie \u7ec3\u4e60&#8212;\u514d\u8f93\u5165\u7528\u6237\u540d\u767b\u5f55<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-225-1024x502.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"502\" data-original=\"https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-225-1024x502.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2520\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>login.jsp \u9875\u9762<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;%--\n  Created by IntelliJ IDEA.\n  User: ZRich\n  Date: 2022\/12\/13\n  Time: \u4e0a\u5348 10:34\n  To change this template use File | Settings | File Templates.\n--%&gt;\n&lt;%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %&gt;\n&lt;html&gt;\n&lt;head&gt;\n    &lt;title&gt;Title&lt;\/title&gt;\n&lt;\/head&gt;\n&lt;body&gt;\n    &lt;form action=\"http:\/\/localhost:8080\/JavaWeb_Code_Cookie\/loginServlet\" method=\"get\"&gt;\n        \u7528\u6237\u540d\uff1a&lt;input type=\"text\" name=\"username\" value=\"${cookie.username.value}\"&gt; &lt;br\/&gt;\n        \u5bc6\u7801\uff1a&lt;input type=\"password\" name=\"password\" id=\"\"&gt; &lt;br\/&gt;\n        &lt;input type=\"submit\" value=\"\u767b\u5f55\"&gt;\n    &lt;\/form&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;\n<\/code><\/pre>\n\n\n\n<p>LoginServlet \u7a0b\u5e8f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>package top.qaqaq.servlet;\n\nimport jakarta.servlet.ServletException;\nimport jakarta.servlet.http.Cookie;\nimport jakarta.servlet.http.HttpServlet;\nimport jakarta.servlet.http.HttpServletRequest;\nimport jakarta.servlet.http.HttpServletResponse;\n\nimport java.io.IOException;\n\n\/**\n * @author RichieZhang\n * @create 2022-12-13 \u4e0a\u5348 10:36\n *\/\npublic class LoginServlet extends HttpServlet {\n\n    @Override\n    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n\n        String username = req.getParameter(\"username\");\n        String password = req.getParameter(\"password\");\n\n        if (\"qaqaq\".equals(username) &amp;&amp; \"123456\".equals(password)) {\n            \/\/ \u767b\u5f55 \u6210\u529f\n            Cookie cookie = new Cookie(\"username\",username);\n            cookie.setMaxAge(60 * 60 * 24 * 7); \/\/ \u5f53\u524dCookie\u4e00\u5468\u5185\u6709\u6548\n            resp.addCookie(cookie);\n            System.out.println(\"\u767b\u5f55 \u6210\u529f\");\n        } else {\n            \/\/ \u767b\u5f55 \u5931\u8d25\n            System.out.println(\"\u767b\u5f55 \u5931\u8d25\");\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">web.xml<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?xml version=\"1.0\" encoding=\"UTF-8\"?&gt;\n&lt;web-app xmlns=\"https:\/\/jakarta.ee\/xml\/ns\/jakartaee\"\n         xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\"\n         xsi:schemaLocation=\"https:\/\/jakarta.ee\/xml\/ns\/jakartaee https:\/\/jakarta.ee\/xml\/ns\/jakartaee\/web-app_5_0.xsd\"\n         version=\"5.0\"&gt;\n\n    &lt;servlet&gt;\n        &lt;servlet-name&gt;CookieServlet&lt;\/servlet-name&gt;\n        &lt;servlet-class&gt;top.qaqaq.servlet.CookieServlet&lt;\/servlet-class&gt;\n    &lt;\/servlet&gt;\n    &lt;servlet-mapping&gt;\n        &lt;servlet-name&gt;CookieServlet&lt;\/servlet-name&gt;\n        &lt;url-pattern&gt;\/cookieServlet&lt;\/url-pattern&gt;\n    &lt;\/servlet-mapping&gt;\n    \n    &lt;servlet&gt;\n        &lt;servlet-name&gt;LoginServlet&lt;\/servlet-name&gt;\n        &lt;servlet-class&gt;top.qaqaq.servlet.LoginServlet&lt;\/servlet-class&gt;\n    &lt;\/servlet&gt;\n    &lt;servlet-mapping&gt;\n        &lt;servlet-name&gt;LoginServlet&lt;\/servlet-name&gt;\n        &lt;url-pattern&gt;\/loginServlet&lt;\/url-pattern&gt;\n    &lt;\/servlet-mapping&gt;\n&lt;\/web-app&gt;<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Cookie \u997c\u5e72 a)\u4ec0\u4e48\u662f Cookie? 1\u3001Cookie \u7ffb\u8bd1\u8fc7\u6765\u662f\u997c\u5e72\u7684\u610f\u601d\u30022\u3001Cookie \u662f\u670d [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59],"tags":[61],"class_list":["post-2515","post","type-post","status-publish","format-standard","hentry","category-javaweb-code","tag-javaweb"],"_links":{"self":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2515"}],"collection":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2515"}],"version-history":[{"count":5,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2515\/revisions"}],"predecessor-version":[{"id":2720,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2515\/revisions\/2720"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}