Java tutorial
/* * Copyright 2013-2014 R3S Development Team * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.oskopek.r3s.web.servlet; 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 javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Path; import java.util.List; /** * A Servlet that uploads results to propagate in the system. */ @WebServlet("/servlet/UploadResults") public class UploadResultsServlet extends HttpServlet { private static final long serialVersionUID = 8953603165824574044L; /** * @param request the HttpServletRequest * @param response the HttpServletResponse * @throws IOException */ protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws IOException { Path batchDir = Files.createTempDirectory("results"); ServletFileUpload servletFileUpload = new ServletFileUpload(new DiskFileItemFactory()); List<FileItem> items; try { items = servletFileUpload.parseRequest(request); } catch (FileUploadException e) { response.sendError(500, e.getMessage()); e.printStackTrace(); return; } //TODO result upload /* for (FileItem item : items) { if (item.isFormField()) { // ignore regular form fields } else { // process files String fileName = FilenameUtils.getName(item.getName()); InputStream fileContent = item.getInputStream(); storageBean.storeToDirectory(fileContent, fileName, batchDir); } } Path infoProps = Paths.get(batchDir.toString(), DirectoryLoader.infoFileName); if (!Files.exists(infoProps)) { // if the info file wasn't uploaded, generate a random demo one Properties demo = Main.createDemoProperties(); Path props = Paths.get(batchDir.toString(), DirectoryLoader.infoFileName); demo.store(Files.newOutputStream(props), "Demo properties"); } */ } /** * @see #processRequest(HttpServletRequest, HttpServletResponse) * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } /** * @see #processRequest(HttpServletRequest, HttpServletResponse) * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } }