{"id":18833,"date":"2024-03-15T17:41:51","date_gmt":"2024-03-15T17:41:51","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/"},"modified":"2024-03-21T14:15:15","modified_gmt":"2024-03-21T14:15:15","slug":"how-to-set-and-read-session-in-java","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/","title":{"rendered":"How to set and read session in Java?"},"content":{"rendered":"<p>In Java, you can use the javax.servlet.http.HttpSession class to set and retrieve session attributes. Here are some common examples of operations:<\/p>\n<p>Set Session value:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u5f53\u524d\u8bf7\u6c42\u7684HttpSession\u5bf9\u8c61<\/span>\r\n<span class=\"hljs-type\">HttpSession<\/span> <span class=\"hljs-variable\">session<\/span> <span class=\"hljs-operator\">=<\/span> request.getSession();\r\n\r\n<span class=\"hljs-comment\">\/\/ \u8bbe\u7f6eSession\u503c<\/span>\r\nsession.setAttribute(<span class=\"hljs-string\">\"key\"<\/span>, <span class=\"hljs-string\">\"value\"<\/span>);\r\n<\/code><\/pre>\n<p>Get the Session value:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u5f53\u524d\u8bf7\u6c42\u7684HttpSession\u5bf9\u8c61<\/span>\r\n<span class=\"hljs-type\">HttpSession<\/span> <span class=\"hljs-variable\">session<\/span> <span class=\"hljs-operator\">=<\/span> request.getSession();\r\n\r\n<span class=\"hljs-comment\">\/\/ \u8bfb\u53d6Session\u503c<\/span>\r\n<span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">value<\/span> <span class=\"hljs-operator\">=<\/span> (String) session.getAttribute(<span class=\"hljs-string\">\"key\"<\/span>);\r\n<\/code><\/pre>\n<p>Caution: When setting and retrieving session values, the parameter types of the setAttribute() and getAttribute() methods need to match the actual data types. Mismatched types could result in exceptions or incorrect outcomes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In Java, you can use the javax.servlet.http.HttpSession class to set and retrieve session attributes. Here are some common examples of operations: Set Session value: \/\/ \u83b7\u53d6\u5f53\u524d\u8bf7\u6c42\u7684HttpSession\u5bf9\u8c61 HttpSession session = request.getSession(); \/\/ \u8bbe\u7f6eSession\u503c session.setAttribute(&#8220;key&#8221;, &#8220;value&#8221;); Get the Session value: \/\/ \u83b7\u53d6\u5f53\u524d\u8bf7\u6c42\u7684HttpSession\u5bf9\u8c61 HttpSession session = request.getSession(); \/\/ \u8bfb\u53d6Session\u503c String value = (String) session.getAttribute(&#8220;key&#8221;); Caution: When setting and [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-18833","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to set and read session in Java? - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to set and read session in Java?\" \/>\n<meta property=\"og:description\" content=\"In Java, you can use the javax.servlet.http.HttpSession class to set and retrieve session attributes. Here are some common examples of operations: Set Session value: \/\/ \u83b7\u53d6\u5f53\u524d\u8bf7\u6c42\u7684HttpSession\u5bf9\u8c61 HttpSession session = request.getSession(); \/\/ \u8bbe\u7f6eSession\u503c session.setAttribute(&quot;key&quot;, &quot;value&quot;); Get the Session value: \/\/ \u83b7\u53d6\u5f53\u524d\u8bf7\u6c42\u7684HttpSession\u5bf9\u8c61 HttpSession session = request.getSession(); \/\/ \u8bfb\u53d6Session\u503c String value = (String) session.getAttribute(&quot;key&quot;); Caution: When setting and [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-15T17:41:51+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-21T14:15:15+00:00\" \/>\n<meta name=\"author\" content=\"William Carter\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"William Carter\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/\"},\"author\":{\"name\":\"William Carter\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/f697031891aacefc4b681d139781d3c0\"},\"headline\":\"How to set and read session in Java?\",\"datePublished\":\"2024-03-15T17:41:51+00:00\",\"dateModified\":\"2024-03-21T14:15:15+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/\"},\"wordCount\":71,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/\",\"name\":\"How to set and read session in Java? 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Here are some common examples of operations: Set Session value: \/\/ \u83b7\u53d6\u5f53\u524d\u8bf7\u6c42\u7684HttpSession\u5bf9\u8c61 HttpSession session = request.getSession(); \/\/ \u8bbe\u7f6eSession\u503c session.setAttribute(\"key\", \"value\"); Get the Session value: \/\/ \u83b7\u53d6\u5f53\u524d\u8bf7\u6c42\u7684HttpSession\u5bf9\u8c61 HttpSession session = request.getSession(); \/\/ \u8bfb\u53d6Session\u503c String value = (String) session.getAttribute(\"key\"); Caution: When setting and [&hellip;]","og_url":"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/","og_site_name":"Blog - Silicon Cloud","article_publisher":"https:\/\/www.facebook.com\/SiliCloudGlobal\/","article_published_time":"2024-03-15T17:41:51+00:00","article_modified_time":"2024-03-21T14:15:15+00:00","author":"William Carter","twitter_card":"summary_large_image","twitter_creator":"@SiliCloudGlobal","twitter_site":"@SiliCloudGlobal","twitter_misc":{"Written by":"William Carter"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/#article","isPartOf":{"@id":"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/"},"author":{"name":"William Carter","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/f697031891aacefc4b681d139781d3c0"},"headline":"How to set and read session in Java?","datePublished":"2024-03-15T17:41:51+00:00","dateModified":"2024-03-21T14:15:15+00:00","mainEntityOfPage":{"@id":"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/"},"wordCount":71,"commentCount":0,"publisher":{"@id":"https:\/\/www.silicloud.com\/blog\/#organization"},"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/","url":"https:\/\/www.silicloud.com\/blog\/how-to-set-and-read-session-in-java\/","name":"How to set and read session in Java? 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