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.rubinefocus.admin.servlet; import com.google.gson.Gson; import java.io.File; import java.io.IOException; import java.util.List; import java.io.IOException; import java.io.PrintWriter; import java.text.SimpleDateFormat; import java.util.Date; 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.FileItemFactory; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.apache.commons.io.FilenameUtils; /** * * @author Ima */ @WebServlet(name = "UploadProductImage", urlPatterns = { "/UploadProductImage" }) public class UploadProductImage extends HttpServlet { private static final long serialVersionUID = 1L; private final String UPLOAD_DIRECTORY = "C:/Files"; /** * 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"); PrintWriter out = response.getWriter(); try { /* 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 UploadFile</title>"); out.println("</head>"); out.println("<body>"); out.println("<h1>Servlet UploadFile at " + request.getContextPath() + "</h1>"); out.println("</body>"); out.println("</html>"); } 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 { //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 { File f = new File(this.getServletContext().getRealPath("admin/assets/images/products")); String savePath = f.getPath(); savePath = savePath.replace("%20", " "); savePath = savePath.replace("build", ""); String fileName = ""; boolean isMultipart = ServletFileUpload.isMultipartContent(request); // process only if its multipart content if (isMultipart) { // Create a factory for disk-based file items FileItemFactory factory = new DiskFileItemFactory(); // Create a new file upload handler ServletFileUpload upload = new ServletFileUpload(factory); try { // Parse the request List<FileItem> multiparts = upload.parseRequest(request); for (FileItem item : multiparts) { if (!item.isFormField()) { fileName = new File(item.getName()).getName(); File file = new File(savePath + "/" + fileName); if (file.exists()) { String fileNameWithOutExt = FilenameUtils.removeExtension(fileName); String ext = FilenameUtils.getExtension(fileName); fileName = fileNameWithOutExt + new SimpleDateFormat("dd-MM-yyyy HH:mm:ss").format(new Date()) + "." + ext; fileName = fileName.replace(" ", ""); fileName = fileName.replace("-", ""); fileName = fileName.replace(":", ""); item.write(new File(savePath + File.separator + fileName)); } else { item.write(new File(savePath + File.separator + fileName)); } Gson gson = new Gson(); response.setContentType("application/json"); response.setCharacterEncoding("UTF-8"); response.getWriter().write(gson.toJson(fileName)); } } } catch (Exception e) { e.printStackTrace(); } } } /** * Returns a short description of the servlet. * * @return a String containing servlet description */ @Override public String getServletInfo() { return "Short description"; }// </editor-fold> }