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 voucherShop; import java.io.*; import static java.lang.System.out; import java.util.*; import javax.servlet.*; import javax.servlet.http.*; import org.apache.commons.fileupload.*; import org.apache.commons.fileupload.disk.*; import org.apache.commons.fileupload.servlet.*; import org.apache.commons.io.output.*; /** * * @author PhuThuan */ public class ControllerVoucher 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"); File file; int maxFileSize = 5000 * 1024; int maxMemSize = 5000 * 1024; //ServletContext context = pageContext.getServletContext(); String filePath = getServletContext().getInitParameter("file-upload"); 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("c:\\temp")); // Create a new file upload handler ServletFileUpload upload = new ServletFileUpload(factory); // maximum file size to be uploaded. upload.setSizeMax(maxFileSize); out.println("1"); try { out.println("2"); // 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()) { out.println("3"); FileItem fi = (FileItem) i.next(); if (!fi.isFormField()) { out.println("4"); // Get the uploaded file parameters String fieldName = fi.getFieldName(); String fileName = fi.getName(); boolean isInMemory = fi.isInMemory(); long sizeInBytes = fi.getSize(); out.println(fileName); // Write the file if (fileName.lastIndexOf("\\") >= 0) { file = new File(filePath + fileName.substring(fileName.lastIndexOf("\\"))); } else { file = new File(filePath + fileName.substring(fileName.lastIndexOf("\\") + 1)); } out.println(filePath); try { fi.write(file); } catch (Exception ex) { System.out.println("li ....."); System.out.println(ex); } out.println("4"); out.println("Uploaded Filename: " + filePath + fileName + "<br>"); } else { out.println("sai ding dan"); } } out.println("</body>"); out.println("</html>"); } catch (Exception ex) { System.out.println(ex); } } else { out.println("<html>"); out.println("<head>"); out.println("<title>Servlet upload</title>"); out.println("</head>"); out.println("<body>"); out.println("<p>No file uploaded</p>"); 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 { 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> }