{"id":2533,"date":"2022-12-13T13:45:20","date_gmt":"2022-12-13T05:45:20","guid":{"rendered":"https:\/\/qaqaq.top\/?p=2533"},"modified":"2022-12-19T20:47:21","modified_gmt":"2022-12-19T12:47:21","slug":"session-%e4%bb%80%e4%b9%88%e6%98%afsession%e3%80%81session-session%e7%9a%84%e5%88%9b%e5%bb%ba%e5%92%8c%e8%8e%b7%e5%8f%96%e3%80%81session%e5%9f%9f%e4%b8%ad%e6%95%b0%e6%8d%ae%e7%9a%84%e5%ad%98-2","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=2533","title":{"rendered":"Session\u529f\u80fd\u6f14\u793a"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Session-\u4ec0\u4e48\u662fSession<\/h2>\n\n\n\n<p>1\u3001Session \u5c31\u4e00\u4e2a\u63a5\u53e3\uff08HttpSession\uff09\u3002<br>2\u3001Session \u5c31\u662f\u4f1a\u8bdd\u3002\u5b83\u662f\u7528\u6765\u7ef4\u62a4\u4e00\u4e2a\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u5173\u8054\u7684\u4e00\u79cd\u6280\u672f\u3002<br>3\u3001\u6bcf\u4e2a\u5ba2\u6237\u7aef\u90fd\u6709\u81ea\u5df1\u7684\u4e00\u4e2a Session \u4f1a\u8bdd\u3002<br>4\u3001Session \u4f1a\u8bdd\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u7528\u6765\u4fdd\u5b58\u7528\u6237\u767b\u5f55\u4e4b\u540e\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Session-Session\u7684\u521b\u5efa\u548c\u83b7\u53d6\u3001Session\u57df\u4e2d\u6570\u636e\u7684\u5b58\u53d6\u3001Session-Session\u8d85\u65f6\u7684\u63a7\u5236<\/h2>\n\n\n\n<p>\u5982\u4f55\u521b\u5efa Session \u548c\u83b7\u53d6(id \u53f7,\u662f\u5426\u4e3a\u65b0)<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5982\u4f55\u521b\u5efa\u548c\u83b7\u53d6 Session\u3002\u5b83\u4eec\u7684 API \u662f\u4e00\u6837\u7684\u3002<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>request.getSession()\n\u7b2c\u4e00\u6b21\u8c03\u7528\u662f\uff1a\u521b\u5efa Session \u4f1a\u8bdd\n\u4e4b\u540e\u8c03\u7528\u90fd\u662f\uff1a\u83b7\u53d6\u524d\u9762\u521b\u5efa\u597d\u7684 Session \u4f1a\u8bdd\u5bf9\u8c61\u3002<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>isNew(); \u5224\u65ad\u5230\u5e95\u662f\u4e0d\u662f\u521a\u521b\u5efa\u51fa\u6765\u7684\uff08\u65b0\u7684\uff09\ntrue \u8868\u793a\u521a\u521b\u5efa\nfalse \u8868\u793a\u83b7\u53d6\u4e4b\u524d\u521b\u5efa<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\u6bcf\u4e2a\u4f1a\u8bdd\u90fd\u6709\u4e00\u4e2a\u8eab\u4efd\u8bc1\u53f7\u3002\u4e5f\u5c31\u662f ID \u503c\u3002\u800c\u4e14\u8fd9\u4e2a ID \u662f\u552f\u4e00\u7684\u3002\ngetId() \u5f97\u5230 Session \u7684\u4f1a\u8bdd id \u503c\u3002<\/code><\/pre>\n\n\n\n<p>Session \u751f\u547d\u5468\u671f\u63a7\u5236<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public void setMaxInactiveInterval(int interval) \u8bbe\u7f6e Session \u7684\u8d85\u65f6\u65f6\u95f4\uff08\u4ee5\u79d2\u4e3a\u5355\u4f4d\uff09\uff0c\u8d85\u8fc7\u6307\u5b9a\u7684\u65f6\u957f\uff0cSession\u5c31\u4f1a\u88ab\u9500\u6bc1\u3002\n\n\u503c\u4e3a\u6b63\u6570\u7684\u65f6\u5019\uff0c\u8bbe\u5b9a Session \u7684\u8d85\u65f6\u65f6\u957f\u3002\n\u8d1f\u6570\u8868\u793a\u6c38\u4e0d\u8d85\u65f6\uff08\u6781\u5c11\u4f7f\u7528\uff09<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>public int getMaxInactiveInterval()\u83b7\u53d6 Session \u7684\u8d85\u65f6\u65f6\u95f4<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>public void invalidate() \u8ba9\u5f53\u524d Session \u4f1a\u8bdd\u9a6c\u4e0a\u8d85\u65f6\u65e0\u6548\u3002<\/code><\/pre>\n\n\n\n<p>Session \u9ed8\u8ba4\u7684\u8d85\u65f6\u65f6\u957f\u662f\u591a\u5c11\uff01<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Session \u9ed8\u8ba4\u7684\u8d85\u65f6\u65f6\u95f4\u957f\u4e3a 30 \u5206\u949f\u3002\n\u56e0\u4e3a\u5728 Tomcat \u670d\u52a1\u5668\u7684\u914d\u7f6e\u6587\u4ef6 web.xml\u4e2d\u9ed8\u8ba4\u6709\u4ee5\u4e0b\u7684\u914d\u7f6e\uff0c\u5b83\u5c31\u8868\u793a\u914d\u7f6e\u4e86\u5f53\u524d Tomcat \u670d\u52a1\u5668\u4e0b\u6240\u6709\u7684 Session\u8d85\u65f6\u914d\u7f6e\u9ed8\u8ba4\u65f6\u957f\u4e3a\uff1a30 \u5206\u949f\u3002<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;session-config&gt;\n&lt;session-timeout&gt;30&lt;\/session-timeout&gt;\n&lt;\/session-config&gt;<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u8bf4\u3002\u4f60\u5e0c\u671b\u4f60\u7684 web \u5de5\u7a0b\uff0c\u9ed8\u8ba4\u7684 Session \u7684\u8d85\u65f6\u65f6\u957f\u4e3a\u5176\u4ed6\u65f6\u957f\u3002\u4f60\u53ef\u4ee5\u5728\u4f60\u81ea\u5df1\u7684 web.xml \u914d\u7f6e\u6587\u4ef6\u4e2d\u505a\u4ee5\u4e0a\u76f8\u540c\u7684\u914d\u7f6e\u3002\u5c31\u53ef\u4ee5\u4fee\u6539\u4f60\u7684 web \u5de5\u7a0b\u6240\u6709 Seession \u7684\u9ed8\u8ba4\u8d85\u65f6\u65f6\u957f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    &lt;!-- \u8868\u793a\u5f53\u524dweb\u5de5\u7a0b\u3002\u521b\u5efa\u51fa\u6765 \u7684\u6240\u6709Session\u9ed8\u8ba4\u662f20\u5206\u949f \u8d85\u65f6\u65f6\u957f --&gt;\n    &lt;session-config&gt;\n        &lt;session-timeout&gt;20&lt;\/session-timeout&gt;\n    &lt;\/session-config&gt;<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u4f60\u60f3\u53ea\u4fee\u6539\u4e2a\u522b Session \u7684\u8d85\u65f6\u65f6\u957f\u3002\u5c31\u53ef\u4ee5\u4f7f\u7528\u4e0a\u9762\u7684 API\u3002setMaxInactiveInterval(int interval)\u6765\u8fdb\u884c\u5355\u72ec\u7684\u8bbe\u7f6e\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>session.setMaxInactiveInterval(int interval)\u5355\u72ec\u8bbe\u7f6e\u8d85\u65f6\u65f6\u957f\u3002<\/code><\/pre>\n\n\n\n<p>Session \u8d85\u65f6\u7684\u6982\u5ff5\u4ecb\u7ecd\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-233.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"672\" height=\"421\" data-original=\"https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-233.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2537\"  sizes=\"(max-width: 672px) 100vw, 672px\" \/><\/div><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>package top.qaqaq.servlet;\n\nimport jakarta.servlet.ServletException;\nimport jakarta.servlet.http.HttpServletRequest;\nimport jakarta.servlet.http.HttpServletResponse;\nimport jakarta.servlet.http.HttpSession;\n\nimport java.io.IOException;\n\n\/**\n * @author RichieZhang\n * @create 2022-12-13 \u4e0a\u5348 11:03\n *\/\npublic class SessionServlet extends BaseServlet{\n\n    protected void deleteNow(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        \/\/ \u5148\u83b7\u53d6Session\u5bf9\u8c61\n        HttpSession session = req.getSession();\n        \/\/ \u8ba9Session\u4f1a\u8bdd\u9a6c\u4e0a\u8d85\u65f6\n        session.invalidate();\n\n        resp.getWriter().write(\"Session\u5df2\u7ecf\u8bbe\u7f6e\u4e3a\u8d85\u65f6\uff08\u65e0\u6548\uff09\");\n\n    }\n\n    protected void life3(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        \/\/ \u5148\u83b7\u53d6Session\u5bf9\u8c61\n        HttpSession session = req.getSession();\n        \/\/ \u8bbe\u7f6e\u5f53\u524dSession 3\u79d2\u540e\u8d85\u65f6\n        session.setMaxInactiveInterval(3);\n\n        resp.getWriter().write(\"\u5f53\u524dSession\u5df2\u7ecf\u8bbe\u7f6e\u4e3a3\u79d2\u540e\u8d85\u65f6\");\n    }\n\n    protected void defalutLife(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        \/\/ \u83b7\u53d6\u4e86Session\u7684\u9ed8\u8ba4\u8d85\u65f6\u65f6\u957f\n        int maxInactiveInterval = req.getSession().getMaxInactiveInterval();\n\n        resp.getWriter().write(\"Session\u7684\u9ed8\u8ba4\u8d85\u65f6\u65f6\u957f\u4e3a\" + maxInactiveInterval + \"\u79d2\");\n    }\n\n    \/**\n     * \u5f80Session\u4e2d\u4fdd\u5b58\u6570\u636e\n     * @param req\n     * @param resp\n     * @throws ServletException\n     * @throws IOException\n     *\/\n    protected void setAttribute(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        req.getSession().setAttribute(\"key1\",\"value1\");\n        resp.getWriter().write(\"\u5df2\u7ecf\u5f80Session\u4e2d\u4fdd\u5b58\u4e86\u6570\u636e\");\n    }\n\n    \/**\n     * \u83b7\u53d6Session\u57df\u4e2d\u7684\u6570\u636e\n     * @param req\n     * @param resp\n     * @throws ServletException\n     * @throws IOException\n     *\/\n    protected void getAttribute(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        Object attribute = req.getSession().getAttribute(\"key1\");\n        resp.getWriter().write(\"\u4eceSession\u4e2d\u83b7\u53d6\u51fakey1\u7684\u6570\u636e\u662f\uff1a\" + attribute);\n    }\n\n    protected void createOrGetSession(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        \/\/ \u521b\u5efa\u548c\u83b7\u53d6session\u4f1a\u8bdd\u5bf9\u8c61\n        HttpSession session = req.getSession();\n        \/\/ \u5224\u65ad \u5f53\u524dsession\u4f1a\u8bdd\uff0c\u662f\u5426\u662f\u65b0\u521b\u5efa\u51fa\u6765\u7684\n        boolean isNew = session.isNew();\n        \/\/ \u83b7\u53d6Session\u4f1a\u8bdd\u7684\u552f\u4e00\u6807\u8bc6 id\n        String id = session.getId();\n\n        resp.getWriter().write(\"\u5f97\u5230\u7684Session\uff0c\u5b83\u7684id\u662f\uff1a\" + id + \"&lt;br\/&gt;\");\n        resp.getWriter().write(\"\u8fd9\u4e2aSession\u662f\u5426\u662f\u65b0\u521b\u5efa\u7684\uff1a\" + isNew + \"&lt;br\/&gt;\");\n    }\n}\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Session-\u6d4f\u89c8\u5668\u548cSession\u4e4b\u95f4\u5173\u8054\u7684\u6280\u672f\u5185\u5e55<\/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-234-1024x500.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"500\" data-original=\"https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-234-1024x500.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2538\"  sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Session-\u4ec0\u4e48\u662fSession 1\u3001Session \u5c31\u4e00\u4e2a\u63a5\u53e3\uff08HttpSession\uff09\u30022\u3001Sessi [&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-2533","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\/2533"}],"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=2533"}],"version-history":[{"count":3,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2533\/revisions"}],"predecessor-version":[{"id":2721,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2533\/revisions\/2721"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2533"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}