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 Servlet; import Database.Upload; import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.util.Iterator; import java.util.List; import javax.servlet.RequestDispatcher; 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 javax.servlet.http.HttpSession; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; /** * * @author Moqsad */ @WebServlet(name = "UploadServlet", urlPatterns = { "/UploadServlet" }) public class UploadServlet 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"); try (PrintWriter out = response.getWriter()) { /* TODO output your page here. You may use following sample code. */ out.println("<!DOCTYPE html>"); out.println("<html>"); out.println("<head>"); out.println("<title>Servlet upload</title>"); out.println("</head>"); out.println("<body>"); out.println("<h1>Servlet upload at " + request.getContextPath() + "</h1>"); out.println("</body>"); out.println("</html>"); } } // <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 { HttpSession tempSession = request.getSession(); java.lang.System.out.println(tempSession.getAttribute("accountType") + "---------------upload\n"); if (tempSession.getAttribute("accountType") == null || !tempSession.getAttribute("accountType").equals("2")) { response.sendRedirect("login.jsp"); } else { System.out.println("------------------IN UPLOADING PROCESS------------------"); String uploader_id = "", title = "", description = "", importancy = "", category = "", fileName = "", date = ""; File file; int maxFileSize = 5000 * 1024; int maxMemSize = 5000 * 1024; String filePath = "G:\\GoogleDrive\\Class file\\Current\\Me\\Web\\Lab\\Project\\Web Project\\ENotice\\src\\main\\webapp\\files\\"; String contentType = request.getContentType(); if ((contentType.indexOf("multipart/form-data") >= 0)) { DiskFileItemFactory factory = new DiskFileItemFactory(); factory.setSizeThreshold(maxMemSize); factory.setRepository(new File("C:\\temp\\")); ServletFileUpload upload = new ServletFileUpload(factory); upload.setSizeMax(maxFileSize); try { List fileItems = upload.parseRequest(request); Iterator i = fileItems.iterator(); while (i.hasNext()) { FileItem fi = (FileItem) i.next(); if (!fi.isFormField()) { String fieldName = fi.getFieldName(); fileName = fi.getName(); boolean isInMemory = fi.isInMemory(); long sizeInBytes = fi.getSize(); file = new File(filePath + fileName); fi.write(file); } else if (fi.getFieldName().equals("title")) { title = fi.getString(); } else if (fi.getFieldName().equals("description")) { description = fi.getString(); } else if (fi.getFieldName().equals("importancy")) { importancy = fi.getString(); } else { category = fi.getString(); } } } catch (Exception ex) { System.out.println(ex); } } else { } //transfering data to Upload notice try { String uploaderId = (String) tempSession.getAttribute("id"); System.out.println("id : " + uploaderId); System.out.println(title + " " + description + " " + importancy + " " + category + " " + fileName + " " + uploaderId); Upload upload = new Upload(); upload.upload(uploaderId, title, description, importancy, category, fileName); } catch (Exception e) { System.out.println("Exception in doPost of UploadServlet()"); e.printStackTrace(); } if (request.getAttribute("fromEdit") == null) { //back to upload.jsp System.out.println("fromEdit is null!!!"); System.out.println("position of Notice : " + request.getParameter("positionOfNotice")); response.sendRedirect("upload.jsp"); } else { System.out.println("fromEdit is not null!!!"); RequestDispatcher rd = request.getRequestDispatcher("UploaderNextPrevCombo"); rd.forward(request, response); } } } /** * Returns a short description of the servlet. * * @return a String containing servlet description */ @Override public String getServletInfo() { return "Short description"; }// </editor-fold> }