Java tutorial
/* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is part of Oviyam, an web viewer for DICOM(TM) images * hosted at http://skshospital.net/pacs/webviewer/oviyam_0.6-src.zip * * The Initial Developer of the Original Code is * Raster Images * Portions created by the Initial Developer are Copyright (C) 2007 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Babu Hussain A * Meer Asgar Hussain B * Prakash J * Suresh V * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ package in.raster.oviyam.servlet; import in.raster.oviyam.xml.handler.QueryParamHandler; import in.raster.oviyam.xml.handler.UserHandler; import in.raster.oviyam.xml.model.Button; import in.raster.oviyam.xml.model.User; import java.io.IOException; import java.io.PrintWriter; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.apache.log4j.Logger; import org.json.JSONArray; /** * * @author asgar */ public class UserConfiguration extends HttpServlet { private static Logger log = Logger.getLogger(UserConfiguration.class); // <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 { PrintWriter out = null; try { String settings = request.getParameter("settings"); String actionToDo = request.getParameter("todo"); String settingsValue = request.getParameter("settingsValue"); //Get user details /*InitialContext ctx = new InitialContext(); Subject subject = (Subject) ctx.lookup("java:comp/env/security/subject"); List<Principal> prinList = new ArrayList<Principal>(subject.getPrincipals()); Principal p = prinList.get(0); String userName = p.getName(); System.out.println("User name: " + userName);*/ String userName = request.getUserPrincipal().getName(); //File tempDir = (File) getServletContext().getAttribute("javax.servlet.context.tempdir"); UserHandler uh = new UserHandler(); String str = null; out = response.getWriter(); User user = uh.findUserByName(userName); if (user == null) { user = new User(); user.setUserName(userName); Button btn = new Button(); btn.setLabel("Today CT"); btn.setDateCrit("t"); btn.setModality("CT"); btn.setAutoRefresh("0"); uh.addNewUser(btn, userName); } if (user != null) { if (actionToDo.equalsIgnoreCase("READ")) { if (settings.equals("theme")) { str = user.getTheme(); } else if (settings.equals("sessTimeout")) { str = user.getSessTimeout(); } else if (settings.equals("userName")) { str = user.getUserName(); String sessTimeout = user.getSessTimeout(); if (sessTimeout != null) { HttpSession session = request.getSession(false); session.setMaxInactiveInterval(Integer.parseInt(sessTimeout)); } } else if (settings.equals("viewerSlider")) { str = user.getViewerSlider(); } else if (settings.equals("roles")) { //Principal pTmp = prinList.get(1); //str = pTmp.toString(); if (request.isUserInRole("WebAdmin") || request.isUserInRole("admin")) { str = "Admin"; } else { str = "Other"; } } else if (settings.equals("buttons")) { QueryParamHandler qph = new QueryParamHandler(); List<Button> butList = qph.getAllButtons(userName); JSONArray jsonArray = new JSONArray(butList); str = jsonArray.toString(); } out.print(str); } else if (actionToDo.equalsIgnoreCase("UPDATE")) { if (settings.equals("theme")) { user.setTheme(settingsValue); } else if (settings.equals("sessTimeout")) { user.setSessTimeout(settingsValue); } else if (settings.equals("viewerSlider")) { user.setViewerSlider(settingsValue); } uh.updateUser(user); out.println("Success"); } } } catch (Exception ex) { log.error("Exception occured in User Configuration servlet", ex); //out.println("Failure"); } } /** * 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 { doGet(request, response); } }