

{"id":135297,"date":"2024-05-08T16:31:41","date_gmt":"2024-05-08T11:01:41","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=135297"},"modified":"2024-05-08T16:31:41","modified_gmt":"2024-05-08T11:01:41","slug":"http-session-class-in-servlet","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/http-session-class-in-servlet\/","title":{"rendered":"Http Session Class in Servlet"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">&lt;html&gt;\r\n    &lt;head&gt;\r\n        &lt;title&gt;TODO supply a title&lt;\/title&gt;\r\n        &lt;meta charset=\"UTF-8\"&gt;\r\n        &lt;meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"&gt;\r\n    &lt;\/head&gt;\r\n    &lt;body&gt;\r\n    &lt;center&gt;\r\n        &lt;form method=\"post\" action=\"HttpSession1\"&gt;\r\n        &lt;table border=\"1\"&gt;\r\n            &lt;tr&gt;\r\n                &lt;th&gt;User Name&lt;\/th&gt;\r\n                &lt;td&gt;&lt;input type=\"text\" name=\"txtuser\"&gt;\r\n            &lt;\/tr&gt;    \r\n            &lt;tr&gt;\r\n                &lt;th&gt;Password&lt;\/th&gt;\r\n                &lt;td&gt;&lt;input type=\"password\" name=\"txtpass\"&gt;\r\n            &lt;\/tr&gt;    \r\n            &lt;tr&gt;\r\n                &lt;td&gt;&lt;\/td&gt;\r\n                &lt;td&gt;\r\n                    &lt;input type=\"submit\" value=\"Submit\"&gt;\r\n                    &lt;input type=\"reset\" value=\"Reset\"&gt;\r\n                &lt;\/td&gt; \r\n            &lt;\/tr&gt;\r\n         &lt;\/table&gt;\r\n        &lt;\/form&gt;      \r\n        &lt;\/center&gt;\r\n    &lt;\/body&gt;\r\n&lt;\/html&gt;<\/pre>\n<h3>Program 2<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\/*\r\n * To change this license header, choose License Headers in Project Properties.\r\n * To change this template file, choose Tools | Templates\r\n * and open the template in the editor.\r\n *\/\r\n\r\npackage controller;\r\n\r\nimport java.io.IOException;\r\nimport java.io.PrintWriter;\r\nimport javax.servlet.ServletException;\r\nimport javax.servlet.http.HttpServlet;\r\nimport javax.servlet.http.HttpServletRequest;\r\nimport javax.servlet.http.HttpServletResponse;\r\nimport javax.servlet.http.HttpSession;\r\n\r\n\/**\r\n *\r\n * @author admin\r\n *\/\r\npublic class HttpSession1 extends HttpServlet {\r\n\r\n    \/**\r\n     * Processes requests for both HTTP &lt;code&gt;GET&lt;\/code&gt; and &lt;code&gt;POST&lt;\/code&gt;\r\n     * methods.\r\n     *\r\n     * @param request servlet request\r\n     * @param response servlet response\r\n     * @throws ServletException if a servlet-specific error occurs\r\n     * @throws IOException if an I\/O error occurs\r\n     *\/\r\n    protected void processRequest(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        response.setContentType(\"text\/html;charset=UTF-8\");\r\n        try (PrintWriter out = response.getWriter()) {\r\n            \/* TODO output your page here. You may use following sample code. *\/\r\n            out.println(\"&lt;!DOCTYPE html&gt;\");\r\n            out.println(\"&lt;html&gt;\");\r\n            out.println(\"&lt;head&gt;\");\r\n            out.println(\"&lt;title&gt;Servlet HttpSession1&lt;\/title&gt;\");            \r\n            out.println(\"&lt;\/head&gt;\");\r\n            out.println(\"&lt;body&gt;\");\r\n            out.println(\"&lt;h1&gt;Servlet HttpSession1 at \" + request.getContextPath() + \"&lt;\/h1&gt;\");\r\n            out.println(\"&lt;center&gt;\");\r\n            String user,pass;\r\n            user=request.getParameter(\"txtuser\");\r\n            pass=request.getParameter(\"txtpass\");\r\n            out.println(\"User Name: \" +user);\r\n            out.println(\"Password: \" +pass);\r\n            HttpSession session=request.getSession(true);  \/\/Create\r\n            session.setAttribute(\"username\", user);\r\n            session.setAttribute(\"password\", pass);\r\n            out.println(\"&lt;form method=post action=HttpSession2&gt;\");\r\n            out.println(\"&lt;input type=submit value=Submit&gt;\");\r\n            out.println(\"&lt;\/form&gt;\");                    \r\n            out.println(\"&lt;\/center&gt;\");\r\n            out.println(\"&lt;\/body&gt;\");\r\n            out.println(\"&lt;\/html&gt;\");\r\n        }\r\n    }\r\n\r\n    \/\/ &lt;editor-fold defaultstate=\"collapsed\" desc=\"HttpServlet methods. Click on the + sign on the left to edit the code.\"&gt;\r\n    \/**\r\n     * Handles the HTTP &lt;code&gt;GET&lt;\/code&gt; method.\r\n     *\r\n     * @param request servlet request\r\n     * @param response servlet response\r\n     * @throws ServletException if a servlet-specific error occurs\r\n     * @throws IOException if an I\/O error occurs\r\n     *\/\r\n    @Override\r\n    protected void doGet(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        processRequest(request, response);\r\n    }\r\n\r\n    \/**\r\n     * Handles the HTTP &lt;code&gt;POST&lt;\/code&gt; method.\r\n     *\r\n     * @param request servlet request\r\n     * @param response servlet response\r\n     * @throws ServletException if a servlet-specific error occurs\r\n     * @throws IOException if an I\/O error occurs\r\n     *\/\r\n    @Override\r\n    protected void doPost(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        processRequest(request, response);\r\n    }\r\n\r\n    \/**\r\n     * Returns a short description of the servlet.\r\n     *\r\n     * @return a String containing servlet description\r\n     *\/\r\n    @Override\r\n    public String getServletInfo() {\r\n        return \"Short description\";\r\n    }\/\/ &lt;\/editor-fold&gt;\r\n\r\n}<\/pre>\n<h3>Program 3<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\/*\r\n * To change this license header, choose License Headers in Project Properties.\r\n * To change this template file, choose Tools | Templates\r\n * and open the template in the editor.\r\n *\/\r\n\r\npackage controller;\r\n\r\nimport java.io.IOException;\r\nimport java.io.PrintWriter;\r\nimport javax.servlet.ServletException;\r\nimport javax.servlet.http.HttpServlet;\r\nimport javax.servlet.http.HttpServletRequest;\r\nimport javax.servlet.http.HttpServletResponse;\r\nimport javax.servlet.http.HttpSession;\r\n\r\n\/**\r\n *\r\n * @author admin\r\n *\/\r\npublic class HttpSession2 extends HttpServlet {\r\n\r\n    \/**\r\n     * Processes requests for both HTTP &lt;code&gt;GET&lt;\/code&gt; and &lt;code&gt;POST&lt;\/code&gt;\r\n     * methods.\r\n     *\r\n     * @param request servlet request\r\n     * @param response servlet response\r\n     * @throws ServletException if a servlet-specific error occurs\r\n     * @throws IOException if an I\/O error occurs\r\n     *\/\r\n    protected void processRequest(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        response.setContentType(\"text\/html;charset=UTF-8\");\r\n        try (PrintWriter out = response.getWriter()) {\r\n            \/* TODO output your page here. You may use following sample code. *\/\r\n            out.println(\"&lt;!DOCTYPE html&gt;\");\r\n            out.println(\"&lt;html&gt;\");\r\n            out.println(\"&lt;head&gt;\");\r\n            out.println(\"&lt;title&gt;Servlet HttpSession2&lt;\/title&gt;\");            \r\n            out.println(\"&lt;\/head&gt;\");\r\n            out.println(\"&lt;body&gt;\");\r\n            out.println(\"&lt;h1&gt;Servlet HttpSession2 at \" + request.getContextPath() + \"&lt;\/h1&gt;\");\r\n            String user,pass;\r\n            HttpSession session=request.getSession();\r\n            user=session.getAttribute(\"username\").toString();\r\n            pass=session.getAttribute(\"password\").toString();\r\n            \r\n            out.println(\"User Name: \" +user);\r\n            out.println(\"Password: \" +pass);\r\n            session.setAttribute(\"email\", \"abc@gmail.com\");\r\n            session.setAttribute(\"city\", \"Indore\");\r\n            out.println(\"&lt;form method=post action=HttpSession3&gt;\");\r\n            out.println(\"&lt;input type=submit value=Submit&gt;\");\r\n            out.println(\"&lt;\/form&gt;\");                    \r\n            out.println(\"&lt;\/body&gt;\");\r\n            out.println(\"&lt;\/html&gt;\");\r\n        }\r\n    }\r\n\r\n    \/\/ &lt;editor-fold defaultstate=\"collapsed\" desc=\"HttpServlet methods. Click on the + sign on the left to edit the code.\"&gt;\r\n    \/**\r\n     * Handles the HTTP &lt;code&gt;GET&lt;\/code&gt; method.\r\n     *\r\n     * @param request servlet request\r\n     * @param response servlet response\r\n     * @throws ServletException if a servlet-specific error occurs\r\n     * @throws IOException if an I\/O error occurs\r\n     *\/\r\n    @Override\r\n    protected void doGet(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        processRequest(request, response);\r\n    }\r\n\r\n    \/**\r\n     * Handles the HTTP &lt;code&gt;POST&lt;\/code&gt; method.\r\n     *\r\n     * @param request servlet request\r\n     * @param response servlet response\r\n     * @throws ServletException if a servlet-specific error occurs\r\n     * @throws IOException if an I\/O error occurs\r\n     *\/\r\n    @Override\r\n    protected void doPost(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        processRequest(request, response);\r\n    }\r\n\r\n    \/**\r\n     * Returns a short description of the servlet.\r\n     *\r\n     * @return a String containing servlet description\r\n     *\/\r\n    @Override\r\n    public String getServletInfo() {\r\n        return \"Short description\";\r\n    }\/\/ &lt;\/editor-fold&gt;\r\n\r\n}<\/pre>\n<h3>Program 4<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\/*\r\n * To change this license header, choose License Headers in Project Properties.\r\n * To change this template file, choose Tools | Templates\r\n * and open the template in the editor.\r\n *\/\r\n\r\npackage controller;\r\n\r\nimport java.io.IOException;\r\nimport java.io.PrintWriter;\r\nimport javax.servlet.ServletException;\r\nimport javax.servlet.http.HttpServlet;\r\nimport javax.servlet.http.HttpServletRequest;\r\nimport javax.servlet.http.HttpServletResponse;\r\nimport javax.servlet.http.HttpSession;\r\n\r\n\/**\r\n *\r\n * @author admin\r\n *\/\r\npublic class HttpSession3 extends HttpServlet {\r\n\r\n    \/**\r\n     * Processes requests for both HTTP &lt;code&gt;GET&lt;\/code&gt; and &lt;code&gt;POST&lt;\/code&gt;\r\n     * methods.\r\n     *\r\n     * @param request servlet request\r\n     * @param response servlet response\r\n     * @throws ServletException if a servlet-specific error occurs\r\n     * @throws IOException if an I\/O error occurs\r\n     *\/\r\n    protected void processRequest(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        response.setContentType(\"text\/html;charset=UTF-8\");\r\n        try (PrintWriter out = response.getWriter()) {\r\n            \/* TODO output your page here. You may use following sample code. *\/\r\n            out.println(\"&lt;!DOCTYPE html&gt;\");\r\n            out.println(\"&lt;html&gt;\");\r\n            out.println(\"&lt;head&gt;\");\r\n            out.println(\"&lt;title&gt;Servlet HttpSession3&lt;\/title&gt;\");            \r\n            out.println(\"&lt;\/head&gt;\");\r\n            out.println(\"&lt;body&gt;\");\r\n            out.println(\"&lt;h1&gt;Servlet HttpSession3 at \" + request.getContextPath() + \"&lt;\/h1&gt;\");\r\n            String user,pass,mail,city;\r\n            HttpSession session=request.getSession();\r\n            \r\n            user=session.getAttribute(\"username\").toString();\r\n            pass=session.getAttribute(\"password\").toString();\r\n            mail=session.getAttribute(\"email\").toString();\r\n            city=session.getAttribute(\"city\").toString();\r\n            \r\n            out.println(\"User Name: \" +user);\r\n            out.println(\"Password: \" +pass);\r\n            out.println(\"Email: \" +mail);\r\n            out.println(\"City Name: \" +city);\r\n            \r\n            out.println(\"&lt;\/body&gt;\");\r\n            out.println(\"&lt;\/html&gt;\");\r\n        }\r\n    }\r\n\r\n    \/\/ &lt;editor-fold defaultstate=\"collapsed\" desc=\"HttpServlet methods. Click on the + sign on the left to edit the code.\"&gt;\r\n    \/**\r\n     * Handles the HTTP &lt;code&gt;GET&lt;\/code&gt; method.\r\n     *\r\n     * @param request servlet request\r\n     * @param response servlet response\r\n     * @throws ServletException if a servlet-specific error occurs\r\n     * @throws IOException if an I\/O error occurs\r\n     *\/\r\n    @Override\r\n    protected void doGet(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        processRequest(request, response);\r\n    }\r\n\r\n    \/**\r\n     * Handles the HTTP &lt;code&gt;POST&lt;\/code&gt; method.\r\n     *\r\n     * @param request servlet request\r\n     * @param response servlet response\r\n     * @throws ServletException if a servlet-specific error occurs\r\n     * @throws IOException if an I\/O error occurs\r\n     *\/\r\n    @Override\r\n    protected void doPost(HttpServletRequest request, HttpServletResponse response)\r\n            throws ServletException, IOException {\r\n        processRequest(request, response);\r\n    }\r\n\r\n    \/**\r\n     * Returns a short description of the servlet.\r\n     *\r\n     * @return a String containing servlet description\r\n     *\/\r\n    @Override\r\n    public String getServletInfo() {\r\n        return \"Short description\";\r\n    }\/\/ &lt;\/editor-fold&gt;\r\n\r\n}<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 &lt;html&gt; &lt;head&gt; &lt;title&gt;TODO supply a title&lt;\/title&gt; &lt;meta charset=&#8221;UTF-8&#8243;&gt; &lt;meta name=&#8221;viewport&#8221; content=&#8221;width=device-width, initial-scale=1.0&#8243;&gt; &lt;\/head&gt; &lt;body&gt; &lt;center&gt; &lt;form method=&#8221;post&#8221; action=&#8221;HttpSession1&#8243;&gt; &lt;table border=&#8221;1&#8243;&gt; &lt;tr&gt; &lt;th&gt;User Name&lt;\/th&gt; &lt;td&gt;&lt;input type=&#8221;text&#8221; name=&#8221;txtuser&#8221;&gt; &lt;\/tr&gt; &lt;tr&gt; &lt;th&gt;Password&lt;\/th&gt; &lt;td&gt;&lt;input type=&#8221;password&#8221; name=&#8221;txtpass&#8221;&gt;&#46;&#46;&#46;<\/p>\n","protected":false},"author":86671,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31448],"tags":[31873,31871,31872,31926,31929,31927,31899,31928],"class_list":["post-135297","post","type-post","status-publish","format-standard","hentry","category-advanced-java-tutorials","tag-advanced-java","tag-advanced-java-practical","tag-advanced-java-program","tag-http-session","tag-http-session-class","tag-http-session-class-in-servlet","tag-servlet","tag-servlet-http-session-class"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Http Session Class in Servlet - DataFlair<\/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:\/\/data-flair.training\/blogs\/http-session-class-in-servlet\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Http Session Class in Servlet - DataFlair\" \/>\n<meta property=\"og:description\" content=\"Program 1 &lt;html&gt; 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