| /* |
| * Copyright (c) 2017, 2018 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0, which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * This Source Code may also be made available under the following Secondary |
| * Licenses when the conditions for such availability set forth in the |
| * Eclipse Public License v. 2.0 are satisfied: GNU General Public License, |
| * version 2 with the GNU Classpath Exception, which is available at |
| * https://www.gnu.org/software/classpath/license.html. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 |
| */ |
| |
| /* |
| * To change this template, choose Tools | Templates |
| * and open the template in the editor. |
| */ |
| |
| package net.max.ee.sfsb; |
| |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import javax.naming.InitialContext; |
| import javax.naming.NamingException; |
| import jakarta.servlet.ServletException; |
| import jakarta.servlet.http.HttpServlet; |
| import jakarta.servlet.http.HttpServletRequest; |
| import jakarta.servlet.http.HttpServletResponse; |
| import jakarta.servlet.http.HttpSession; |
| |
| /** |
| * |
| * @author mk |
| */ |
| public class SFSBDriverServlet extends HttpServlet { |
| |
| |
| /** |
| * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods. |
| * @param request servlet request |
| * @param response servlet response |
| * @throws ServletException if a servlet-specific error occurs |
| * @throws IOException if an I/O error occurs |
| */ |
| protected void processRequest(HttpServletRequest request, HttpServletResponse response) |
| throws ServletException, IOException { |
| response.setContentType("text/html;charset=UTF-8"); |
| PrintWriter out = response.getWriter(); |
| try { |
| out.println("<html>"); |
| out.println("<head>"); |
| out.println("<title>Servlet SFSBDriverServlet</title>"); |
| out.println("</head>"); |
| out.println("<body>"); |
| out.println("<h1>Servlet SFSBDriverServlet at " + request.getContextPath () + "</h1>"); |
| out.println("<h1>SFSBDriverServlet looking up jndi using: java:global/SFSBDriver/SimpleSessionBean </h1>"); |
| |
| HttpSession session = request.getSession(true); |
| Integer intAttr = (Integer) session.getAttribute("intAttr"); |
| |
| String KEY_1 = "SFSB_1"; |
| String KEY_2 = "SFSB_2"; |
| |
| SimpleSessionBean sfsb1 = (SimpleSessionBean) session.getAttribute(KEY_1); |
| SimpleSessionBean sfsb2 = (SimpleSessionBean) session.getAttribute(KEY_2); |
| |
| |
| out.println("Integer attr: " + intAttr); |
| intAttr = (intAttr == null) ? 0 : (intAttr.intValue() + 1); |
| session.setAttribute("intAttr", intAttr); |
| |
| out.println("<h1>From session SFSB[1] NOT NULL ?: " + ("" + (sfsb1 != null)) + " </h1>"); |
| out.println("<h1>From session SFSB[2] NOT NULL? : " + ("" + (sfsb2 != null)) + " </h1>"); |
| |
| if (sfsb1 == null) { |
| InitialContext ctx = new InitialContext(); |
| |
| sfsb1 = (SimpleSessionBean) ctx.lookup("java:global/SFSBDriver/SimpleSessionBean"); |
| sfsb2 = (SimpleSessionBean) ctx.lookup("java:global/SFSBDriver/SimpleSessionBean"); |
| |
| out.println("<h1>Created SFSB[1]: " + sfsb1.asString() + " </h1>"); |
| out.println("<h1>Created SFSB[2]: " + sfsb2.asString() + " </h1>"); |
| |
| } else { |
| try { |
| out.println("<h1>Retrieved SFSB[1]: " + sfsb1.asString() + " </h1>"); |
| sfsb1.incrementCounter(); |
| } catch (Exception ex1) { |
| out.println("<h1>Error while accessing SFSB[1] </h1>"); |
| ex1.printStackTrace(out); |
| } |
| |
| try { |
| out.println("<h1>Retrieved SFSB[2]: " + sfsb2.asString() + " </h1>"); |
| sfsb2.incrementCounter(); |
| } catch (Exception ex2) { |
| out.println("<h1>Error while accessing SFSB[2] </h1>"); |
| ex2.printStackTrace(out); |
| } |
| } |
| |
| session.setAttribute(KEY_1, sfsb1); |
| session.setAttribute(KEY_2, sfsb2); |
| out.println("</body>"); |
| out.println("</html>"); |
| } catch (Exception nmEx) { |
| nmEx.printStackTrace(out); |
| } finally { |
| out.close(); |
| } |
| } |
| |
| // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code."> |
| /** |
| * Handles the HTTP <code>GET</code> method. |
| * @param request servlet request |
| * @param response servlet response |
| * @throws ServletException if a servlet-specific error occurs |
| * @throws IOException if an I/O error occurs |
| */ |
| @Override |
| protected void doGet(HttpServletRequest request, HttpServletResponse response) |
| throws ServletException, IOException { |
| processRequest(request, response); |
| } |
| |
| /** |
| * Handles the HTTP <code>POST</code> method. |
| * @param request servlet request |
| * @param response servlet response |
| * @throws ServletException if a servlet-specific error occurs |
| * @throws IOException if an I/O error occurs |
| */ |
| @Override |
| protected void doPost(HttpServletRequest request, HttpServletResponse response) |
| throws ServletException, IOException { |
| processRequest(request, response); |
| } |
| |
| /** |
| * Returns a short description of the servlet. |
| * @return a String containing servlet description |
| */ |
| @Override |
| public String getServletInfo() { |
| return "Short description"; |
| }// </editor-fold> |
| |
| } |