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 it.unisa.tirocinio.servlet; import it.unisa.integrazione.manager.concrete.*; import it.unisa.tirocinio.database.*; import java.io.*; import java.sql.SQLException; import java.text.*; import java.util.*; import java.util.logging.*; 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.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.json.*; /** * * @author Valentino Vivone */ @WebServlet(name = "UploadInformationForModuleFilesServlet", urlPatterns = { "/UploadInformationForModuleFilesServlet" }) public class UploadInformationForModuleFilesServlet extends HttpServlet { private PrintWriter out = null; private boolean isMultipart; private String filePath; private String fileSeparator = null; private AdministratorDBOperation serialNumberFromDBOperation = null; private final JSONObject message = new JSONObject(); @Override public void init() { try { // Get the file location where it would be stored. //filePath = getServletContext().getInitParameter("file-upload"); fileSeparator = System.getProperty("file.separator"); String userHome = System.getProperty("user.home"); filePath = userHome + fileSeparator + "ModuleForUploadFile"; serialNumberFromDBOperation = new AdministratorDBOperation(); File directoryCheck = new File(filePath); if (!directoryCheck.exists()) { directoryCheck.mkdir(); } } catch (ClassNotFoundException ex) { out.println("Exception " + ex); Logger.getLogger(UploadInformationFilesServlet.class.getName()).log(Level.SEVERE, null, ex); } catch (SQLException ex) { out.println("Exception " + ex); Logger.getLogger(UploadInformationFilesServlet.class.getName()).log(Level.SEVERE, null, ex); } catch (IOException ex) { out.println("Exception " + ex); Logger.getLogger(UploadInformationFilesServlet.class.getName()).log(Level.SEVERE, null, ex); } } /** * 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, JSONException { try { response.setContentType("text/html;charset=UTF-8"); response.setHeader("Access-Control-Allow-Origin", "*"); out = response.getWriter(); isMultipart = ServletFileUpload.isMultipartContent(request); AdministratorDBOperation getSerialNumberObj = new AdministratorDBOperation(); ConcreteStaff aAdmin = null; String serialNumber = null; DiskFileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); List fileItems = upload.parseRequest(request); Iterator i = fileItems.iterator(); File fileToStore = null; String adminSubfolderPath = filePath; while (i.hasNext()) { FileItem fi = (FileItem) i.next(); if (!fi.isFormField()) { // Get the uploaded file parameters String fieldName = fi.getFieldName(); String fileName = fi.getName(); DateFormat dateFormat = new SimpleDateFormat("yyyy"); Date date = new Date(); if (fieldName.equals("modulefile")) { fileToStore = new File( adminSubfolderPath + fileSeparator + dateFormat.format(date) + " - Module.pdf"); } else if (fieldName.equals("registerfile")) { fileToStore = new File( adminSubfolderPath + fileSeparator + dateFormat.format(date) + " - Register.pdf"); } fi.write(fileToStore); // out.println("Uploaded Filename: " + fieldName + "<br>"); } else { //out.println("It's not formfield"); //out.println(fi.getString()); aAdmin = getSerialNumberObj.getFK_DepartimentbyFK_Account(Integer.parseInt(fi.getString())); serialNumber = "" + aAdmin.getFKDepartment(); adminSubfolderPath += fileSeparator + serialNumber; new File(adminSubfolderPath).mkdir(); } } message.put("status", 1); out.print(message.toString()); } catch (IOException ex) { message.put("status", 0); message.put("errorMessage", ex); out.print(message.toString()); Logger.getLogger(UploadInformationFilesServlet.class.getName()).log(Level.SEVERE, null, ex); } catch (ClassNotFoundException ex) { message.put("status", 0); message.put("errorMessage", ex); out.print(message.toString()); Logger.getLogger(UploadInformationFilesServlet.class.getName()).log(Level.SEVERE, null, ex); } catch (SQLException ex) { message.put("status", 0); message.put("errorMessage", ex); out.print(message.toString()); Logger.getLogger(UploadInformationFilesServlet.class.getName()).log(Level.SEVERE, null, ex); } catch (FileUploadException ex) { message.put("status", 0); message.put("errorMessage", ex); out.print(message.toString()); Logger.getLogger(UploadInformationFilesServlet.class.getName()).log(Level.SEVERE, null, ex); } catch (Exception ex) { message.put("status", 0); message.put("errorMessage", ex); out.print(message.toString()); Logger.getLogger(UploadInformationFilesServlet.class.getName()).log(Level.SEVERE, null, ex); } 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 { throw new ServletException("GET method used with " + getClass().getName() + ": POST method required."); } /** * 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 { try { processRequest(request, response); } catch (Exception ex) { Logger.getLogger(UploadInformationFilesServlet.class.getName()).log(Level.SEVERE, null, ex); } } /** * Returns a short description of the servlet. * * @return a String containing servlet description */ @Override public String getServletInfo() { return "Short description"; }// </editor-fold> private String reverseSerialNumber(String primaryKey) { String reversedSerialNumber = ""; for (int i = primaryKey.length() - 1; i >= 0; i--) { reversedSerialNumber += (primaryKey.charAt(i)); } return reversedSerialNumber; } }