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.controller; import com.intbit.AppConstants; import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.util.Iterator; import java.util.List; import java.util.logging.Level; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.servlet.*; import org.apache.commons.fileupload.disk.*; import org.apache.commons.fileupload.*; /** * * @author intbit */ public class UploadLogo extends BrndBotBaseHttpServlet { /** * 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 */ @Override public void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { super.processRequest(request, response); response.setContentType("text/html;charset=UTF-8"); PrintWriter out = response.getWriter(); getSqlMethodsInstance().session = request.getSession(); String filePath = null; String fileName = null, fieldName = null, uploadPath = null, uploadType = null; RequestDispatcher request_dispatcher = null; File file; int maxFileSize = 5000 * 1024; int maxMemSize = 5000 * 1024; try { uploadPath = AppConstants.USER_LOGO; // Verify the content type String contentType = request.getContentType(); if ((contentType.indexOf("multipart/form-data") >= 0)) { DiskFileItemFactory factory = new DiskFileItemFactory(); // maximum size that will be stored in memory factory.setSizeThreshold(maxMemSize); // Location to save data that is larger than maxMemSize. factory.setRepository(new File(AppConstants.TMP_FOLDER)); // Create a new file upload handler ServletFileUpload upload = new ServletFileUpload(factory); // maximum file size to be uploaded. upload.setSizeMax(maxFileSize); // Parse the request to get file items. List fileItems = upload.parseRequest(request); // Process the uploaded file items Iterator i = fileItems.iterator(); out.println("<html>"); out.println("<head>"); out.println("<title>JSP File upload</title>"); out.println("</head>"); out.println("<body>"); while (i.hasNext()) { FileItem fi = (FileItem) i.next(); boolean ch = fi.isFormField(); if (!fi.isFormField()) { // Get the uploaded file parameters fieldName = fi.getFieldName(); fileName = fi.getName(); String uid = (String) getSqlMethodsInstance().session.getAttribute("EmailID"); int UID = getSqlMethodsInstance().getUserID(uid); uploadPath = uploadPath + File.separator + UID + File.separator + "logo"; File uploadDir = new File(uploadPath); if (!uploadDir.exists()) { uploadDir.mkdirs(); } // int inStr = fileName.indexOf("."); // String Str = fileName.substring(0, inStr); // // fileName = Str + "_" + UID + ".jpeg"; fileName = fileName + "_" + UID; getSqlMethodsInstance().session.setAttribute("UID", UID); getSqlMethodsInstance().session.setAttribute("ImageFileName", fileName); boolean isInMemory = fi.isInMemory(); long sizeInBytes = fi.getSize(); filePath = uploadPath + File.separator + fileName; File storeFile = new File(filePath); fi.write(storeFile); getSqlMethodsInstance().updateUsers(UID, fileName); out.println("Uploaded Filename: " + filePath + "<br>"); } } } } catch (Exception ex) { logger.log(Level.SEVERE, util.Utility.logMessage(ex, "Exception while updating org name:", getSqlMethodsInstance().error)); out.println(getSqlMethodsInstance().error); } finally { out.close(); getSqlMethodsInstance().closeConnection(); } } // <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> }