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.javaweb.controller; import com.javaweb.model.Tintuc; import com.javaweb.service.FileService; import com.javaweb.service.TintucService; import java.io.File; import java.io.IOException; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Iterator; import java.util.List; import java.util.logging.Level; import java.util.logging.Logger; import javax.servlet.ServletException; 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 DuongNguyen */ public class SuaTinTucServlet extends HttpServlet { private boolean isMultipart; private String filePath; private int maxFileSize = 1000 * 600; private int maxMemSize = 1000 * 600; private File file; /** * 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, ParseException { response.setContentType("text/html;charset=UTF-8"); request.setCharacterEncoding("UTF-8"); //response.setCharacterEncoding("UTF-8"); HttpSession session = request.getSession(); String TieuDe = "", NoiDung = "", ngaydang = "", GhiChu = "", fileName = ""; int idloaitin = 0, idTK = 0, idtt = 0; TintucService tintucservice = new TintucService(); //File upload String folderupload = getServletContext().getInitParameter("file-upload"); String rootPath = getServletContext().getRealPath("/"); filePath = rootPath + folderupload; isMultipart = ServletFileUpload.isMultipartContent(request); response.setContentType("text/html"); java.io.PrintWriter out = response.getWriter(); 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:\\Windows\\Temp\\")); // Create a new file upload handler ServletFileUpload upload = new ServletFileUpload(factory); // maximum file size to be uploaded. upload.setSizeMax(maxFileSize); try { // Parse the request to get file items. List fileItems = upload.parseRequest(request); // Process the uploaded file items Iterator i = fileItems.iterator(); while (i.hasNext()) { FileItem fi = (FileItem) i.next(); if (!fi.isFormField()) { // Get the uploaded file parameters String fieldName = fi.getFieldName(); fileName = fi.getName(); String contentType = fi.getContentType(); boolean isInMemory = fi.isInMemory(); long sizeInBytes = fi.getSize(); //change file name fileName = FileService.ChangeFileName(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)); } fi.write(file); // out.println("Uploaded Filename: " + fileName + "<br>"); } if (fi.isFormField()) { if (fi.getFieldName().equalsIgnoreCase("TieuDe")) { TieuDe = fi.getString("UTF-8"); } else if (fi.getFieldName().equalsIgnoreCase("NoiDung")) { NoiDung = fi.getString("UTF-8"); } else if (fi.getFieldName().equalsIgnoreCase("NgayDang")) { ngaydang = fi.getString("UTF-8"); } else if (fi.getFieldName().equalsIgnoreCase("GhiChu")) { GhiChu = fi.getString("UTF-8"); } else if (fi.getFieldName().equalsIgnoreCase("loaitin")) { idloaitin = Integer.parseInt(fi.getString("UTF-8")); } else if (fi.getFieldName().equalsIgnoreCase("idtaikhoan")) { idTK = Integer.parseInt(fi.getString("UTF-8")); } else if (fi.getFieldName().equalsIgnoreCase("idtt")) { idtt = Integer.parseInt(fi.getString("UTF-8")); } } } } catch (Exception ex) { System.out.println(ex); } Date NgayDang = new SimpleDateFormat("yyyy-MM-dd").parse(ngaydang); Tintuc tt = tintucservice.GetTintucID(idtt); tt.setIdTaiKhoan(idTK); tt.setTieuDe(TieuDe); tt.setNoiDung(NoiDung); tt.setNgayDang(NgayDang); tt.setGhiChu(GhiChu); if (!fileName.equals("")) { if (tt.getImgLink() != null) { if (!tt.getImgLink().equals(fileName)) { tt.setImgLink(fileName); } } else { tt.setImgLink(fileName); } } boolean rs = tintucservice.InsertTintuc(tt); if (rs) { session.setAttribute("kiemtra", "1"); response.sendRedirect("SuaTinTuc.jsp?idTintuc=" + idtt); } else { session.setAttribute("kiemtra", "0"); response.sendRedirect("SuaTinTuc.jsp?idTintuc=" + idtt); } // 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 SuaTinTucServlet</title>"); // out.println("</head>"); // out.println("<body>"); // out.println("<h1>Servlet SuaTinTucServlet 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 { try { processRequest(request, response); } catch (ParseException ex) { Logger.getLogger(SuaTinTucServlet.class.getName()).log(Level.SEVERE, null, ex); } } /** * 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 (ParseException ex) { Logger.getLogger(SuaTinTucServlet.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> }