Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.ccsna.safetynet; import com.ccsna.ccsna.Member; import com.ccsna.ccsna.News; import com.ccsna.ccsna.NewsModel; import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.sql.Time; import java.util.Date; import java.util.Iterator; import java.util.List; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileItemFactory; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.apache.log4j.Logger; /** * * @author estelle */ @WebServlet(name = "NewsServlet", urlPatterns = { "/news/add" }) public class NewsServlet extends HttpServlet { private static final Logger log = Logger.getRootLogger(); private final static String JPEG = "image/jpeg"; private final static String JPG = "image/jpg"; private final static String PDF = "application/pdf"; private final static String JPEG_EXTENSION = "jpg"; private final static String PDF_EXTENSION = "pdf"; /** * 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"); try { PrintWriter out = response.getWriter(); String smallUrl = "", largeUrl = "", message = "", title = "", content = "", startDate = "", endDate = "", newsType = "", st = "", endTime = "", startTime = "", fileType = null; Date sDate = null, eDate = null; Time eTime = null, sTime = null; int action = 0, newsId = 0; boolean dataValid = true; News news = null; String fullPath = null; Member loggedInMember = UserAuthenticator.loggedInUser(request.getSession()); if (loggedInMember != null) { String createdBy = String.valueOf(loggedInMember.getMemberId()); boolean isMultipart = ServletFileUpload.isMultipartContent(request); log.info("isMultipart :" + isMultipart); if (isMultipart) { FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); String appPath = request.getServletContext().getRealPath(""); //String glassfishInstanceRootPropertyName = "com.sun.aas.instanceRoot"; //String instanceRoot = System.getProperty(glassfishInstanceRootPropertyName) + "/applications/user-pix/"; try { List items = upload.parseRequest(request); Iterator iterator = items.iterator(); while (iterator.hasNext()) { FileItem item = (FileItem) iterator.next(); if (!item.isFormField()) { //log.info("item is form field"); String fileName = item.getName(); //log.info("the name of the item is :" + fileName); String contentType = item.getContentType(); //log.info("the content type is :" + contentType); if (item.getContentType().equalsIgnoreCase(JPEG) || item.getContentType().equalsIgnoreCase(JPG) || item.getContentType().equalsIgnoreCase(PDF)) { String root = appPath; log.info("pdf content recognised"); log.info("root path is :" + appPath); //String smallLoc = "/uploads/small"; String largeLoc = "/uploads/large"; log.info("largeLoc:" + largeLoc); //File pathSmall = new File(root + smallLoc); File pathLarge = new File(root + largeLoc); //log.info("small image path :" + pathSmall); log.info("large image path :" + pathLarge); if (!pathLarge.exists()) { // boolean status = pathSmall.mkdirs(); pathLarge.mkdirs(); } if (item.getContentType().equalsIgnoreCase(PDF)) { log.info("loading pdf file"); fileType = Menu.PDF; fileName = createdBy + "_" + System.currentTimeMillis() + "." + PDF_EXTENSION; //File uploadedFileSmall = new File(pathSmall + "/" + fileName); File uploadedFileLarge = new File(pathLarge + "/" + fileName); Menu.uploadPdfFile(item.getInputStream(), uploadedFileLarge); } else { fileType = Menu.IMAGE; fileName = createdBy + "_" + System.currentTimeMillis() + "." + JPEG_EXTENSION; log.info("filename is : " + fileName); // File uploadedFileSmall = new File(pathSmall + "/" + fileName); File uploadedFileLarge = new File(pathLarge + "/" + fileName); //Menu.resizeImage(item.getInputStream(), 160, uploadedFileSmall); Menu.resizeImage(item.getInputStream(), 160, uploadedFileLarge); } //smallUrl = smallLoc + "/" + fileName + ""; largeUrl = largeLoc + "/" + fileName + ""; log.info("largeUrl image url is :" + largeUrl); fullPath = request.getContextPath() + "/" + largeUrl; } } else { if (item.getFieldName().equalsIgnoreCase("newsTitle")) { title = item.getString(); log.info("title is :" + title); } if (item.getFieldName().equalsIgnoreCase("type")) { newsType = item.getString(); log.info("newsType is :" + newsType); } if (item.getFieldName().equalsIgnoreCase("content")) { content = item.getString(); log.info("content is :" + content); } if (item.getFieldName().equalsIgnoreCase("start_Date")) { startDate = item.getString(); if (startDate != null && !startDate.isEmpty()) { sDate = Menu .convertDateToSqlDate(Menu.stringToDate(startDate, "yyyy-MM-dd")); } log.info("startDate is :" + startDate); } if (item.getFieldName().equalsIgnoreCase("end_Date")) { endDate = item.getString(); if (endDate != null && !endDate.isEmpty()) { eDate = Menu.convertDateToSqlDate(Menu.stringToDate(endDate, "yyyy-MM-dd")); } log.info("endDate is :" + endDate); } if (item.getFieldName().equalsIgnoreCase("action")) { action = Integer.parseInt(item.getString()); log.info("the action is :" + action); } if (item.getFieldName().equalsIgnoreCase("newsId")) { newsId = Integer.parseInt(item.getString()); log.info("the newsid is :" + newsId); } if (item.getFieldName().equalsIgnoreCase("status")) { st = item.getString(); log.info("the status is :" + st); } if (item.getFieldName().equalsIgnoreCase("end_Time")) { endTime = item.getString(); if (endTime != null && !endTime.isEmpty()) { eTime = Menu.convertStringToSqlTime(endTime); } log.info("eTime is :" + eTime); } if (item.getFieldName().equalsIgnoreCase("start_Time")) { startTime = item.getString(); if (startTime != null && !startTime.isEmpty()) { sTime = Menu.convertStringToSqlTime(startTime); } log.info("sTime is :" + sTime); } } } } catch (FileUploadException e) { e.printStackTrace(); } } switch (Validation.Actions.values()[action]) { case CREATE: log.info("creating new serlvet ................"); { news = new NewsModel().addNews(title, newsType, content, sDate, eDate, new Date(), createdBy, Menu.ACTIVE, largeUrl, fileType, fullPath); } if (news != null) { log.info("news successfully created..."); message += "News item has been successfully added"; Validation.setAttributes(request, Validation.SUCCESS, message); response.sendRedirect(request.getContextPath() + "/admin/management.jsp"); } else { log.info("news creating failed..."); message += "Unable to add news item"; Validation.setAttributes(request, Validation.ERROR, message); response.sendRedirect(request.getContextPath() + "/admin/management.jsp"); } break; case UPDATE: log.info("updating news ..."); if (title != null && !title.isEmpty()) { news = new NewsModel().findByParameter("title", title); } if (news != null && (news.getNewsId() == newsId)) { log.info("news is :" + news.getNewsId()); dataValid = true; } else { dataValid = false; } if (news == null) { dataValid = true; } log.info("dataValid is :" + dataValid); if (dataValid) { boolean newsUpdated = new NewsModel().updateNews(newsId, title, newsType, content, sDate, eDate, createdBy, st, largeUrl, smallUrl, sTime, eTime); if (newsUpdated) { message += "News/Alert has been successfully updated"; Validation.setAttributes(request, Validation.SUCCESS, message); response.sendRedirect(request.getContextPath() + "/admin/management.jsp"); } else { message += "Unable to update news item"; Validation.setAttributes(request, Validation.ERROR, message); response.sendRedirect(request.getContextPath() + "/admin/newsEdit.jsp?id=" + newsId); } } else { message += "News with same title already exist, Enter a different title"; Validation.setAttributes(request, Validation.ERROR, message); response.sendRedirect(request.getContextPath() + "/admin/newsEdit.jsp?id=" + newsId); } break; } } else { message += "Session expired, Kindly login with username and password"; Validation.setAttributes(request, Validation.ERROR, message); response.sendRedirect(request.getContextPath() + "/index.jsp"); } } catch (Exception e) { } } // <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> }