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 at.ac.tuwien.dsg.cloudlyra.utils; import at.ac.tuwien.dsg.cloudlyra.service.core.dafstore.DafStore; import java.io.BufferedReader; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.PrintWriter; import static java.lang.System.in; import java.util.List; import java.util.logging.Level; import java.util.logging.Logger; 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.xml.bind.JAXBException; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.apache.commons.io.FilenameUtils; /** * * @author Jun */ @WebServlet(name = "Uploader", urlPatterns = { "/Uploader" }) public class Uploader 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>Data Asset Uploaded</title>"); out.println("</head>"); out.println("<body>"); out.println("<h3>Data asset function uploaded</h13>"); 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 { InputStream dafFileContent = null; String dafName = ""; String dafType = ""; if (ServletFileUpload.isMultipartContent(request)) { try { List<FileItem> multiparts = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request); for (FileItem item : multiparts) { if (!item.isFormField()) { dafName = new File(item.getName()).getName(); dafFileContent = item.getInputStream(); } else { String fieldName = item.getFieldName(); String fieldValue = item.getString(); if (fieldName.equals("type")) { dafType = fieldValue; } // String log = "att name: " + fieldname + " - value: " + fieldvalue; // Logger.getLogger(Uploader.class.getName()).log(Level.INFO, log); } } //File uploaded successfully request.setAttribute("message", "File Uploaded Successfully"); } catch (Exception ex) { request.setAttribute("message", "File Upload Failed due to " + ex); } } else { request.setAttribute("message", "Sorry this Servlet only handles file upload request"); } if (!dafName.equals("")) { DafStore dafStore = new DafStore(); dafStore.insertDAF(dafName, dafType, dafFileContent); Logger.getLogger(Uploader.class.getName()).log(Level.INFO, dafName); } response.sendRedirect("daf.jsp"); } /** * Returns a short description of the servlet. * * @return a String containing servlet description */ @Override public String getServletInfo() { return "Short description"; }// </editor-fold> }