Java tutorial
/** * Copyright (C) 2000 - 2013 Silverpeas * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * As a special exception to the terms and conditions of version 3.0 of * the GPL, you may redistribute this Program in connection with Free/Libre * Open Source Software ("FLOSS") applications as described in Silverpeas's * FLOSS exception. You should have recieved a copy of the text describing * the FLOSS exception, and it is also available here: * "http://www.silverpeas.org/docs/core/legal/floss_exception.html" * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.silverpeas.silvercrawler.servlets; import com.silverpeas.silvercrawler.statistic.Statistic; import com.silverpeas.util.FileUtil; import com.silverpeas.util.exception.RelativeFileAccessException; import com.stratelia.silverpeas.peasCore.MainSessionController; import com.stratelia.silverpeas.peasCore.servlets.SilverpeasAuthenticatedHttpServlet; import com.stratelia.silverpeas.silvertrace.SilverTrace; import com.stratelia.webactiv.util.FileRepositoryManager; import com.stratelia.webactiv.util.ResourceLocator; import org.apache.commons.io.FileUtils; import org.apache.tika.io.IOUtils; import org.silverpeas.core.admin.OrganisationControllerFactory; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.File; import java.io.IOException; import java.io.OutputStream; import java.io.StringReader; /** * Class declaration * @author */ public class SilverCrawlerFileServer extends SilverpeasAuthenticatedHttpServlet { private static final long serialVersionUID = 4892517833096053490L; @Override public void init(ServletConfig config) { try { super.init(config); } catch (ServletException se) { SilverTrace.fatal("silverCrawler", "FileServer.init()", "peasUtil.CANNOT_ACCESS_SUPERCLASS"); } } @Override public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { doPost(req, res); } @Override public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { SilverTrace.info("silverCrawler", "FileServer.doPost()", "root.MSG_GEN_ENTER_METHOD"); String sourceFile = req.getParameter("SourceFile"); String componentId = req.getParameter("ComponentId"); String typeUpload = req.getParameter("TypeUpload"); String path = req.getParameter("Path"); try { FileUtil.checkPathNotRelative(sourceFile); } catch (RelativeFileAccessException e) { throwHttpForbiddenError(); } MainSessionController mainSessionCtrl = getMainSessionController(req); String userId = mainSessionCtrl.getUserId(); // Check user rights on identified component if (!OrganisationControllerFactory.getOrganisationController().isComponentAvailable(componentId, userId)) { throwHttpForbiddenError(); } File rootPath = FileUtils.getFile( mainSessionCtrl.getOrganisationController().getComponentParameterValue(componentId, "directory")); // 2 cas : // - tlchargement d'un zip dans rpertoire temporaire // - tlchargement d'un fichier depuis le rpertoire crawl File fileToSend; String type; File fileStat; if ("link".equals(typeUpload)) { type = Statistic.FILE; fileStat = fileToSend = FileUtils.getFile(rootPath, sourceFile); SilverTrace.debug("silverCrawler", "FileServer", "root.MSG_GEN_PARAM_VALUE", "file, type = " + type + " file = " + fileStat); } else { type = Statistic.DIRECTORY; fileToSend = FileUtils.getFile(FileRepositoryManager.getTemporaryPath(null, componentId), sourceFile); fileStat = FileUtils.getFile(rootPath, path); SilverTrace.debug("silverCrawler", "FileServer", "root.MSG_GEN_PARAM_VALUE", "directory, type = " + type + " file = " + fileStat); } sendFile(res, fileToSend); // ajout dans la table des tlchargements Statistic.addStat(userId, fileStat, componentId, type); SilverTrace.info("silverCrawler", "FileServer.doPost()", "root.MSG_GEN_ENTER_METHOD", " addStat : fileStat = " + fileStat); } private void sendFile(HttpServletResponse response, File file) throws IOException { response.setContentType(FileUtil.getMimeType(file.getName())); response.setHeader("Content-Length", String.valueOf(file.length())); response.setHeader("Content-Disposition", "attachment; filename=\"" + file.getName() + "\""); SilverTrace.debug("peasUtil", "SilverCrawlerFileServer.sendFile()", "root.MSG_GEN_ENTER_METHOD", " file: " + file.getAbsolutePath()); try { FileUtils.copyFile(file, response.getOutputStream()); response.getOutputStream().flush(); SilverTrace.debug("peasUtil", "SilverCrawlerFileServer.sendFile()", "root.MSG_GEN_ENTER_METHOD", " File was sent"); } catch (IOException e) { SilverTrace.error("peasUtil", "SilverCrawlerFileServer.sendFile", "root.EX_CANT_READ_FILE", " file: " + file.getAbsolutePath(), e); displayWarningHtmlCode(response); } } private void displayWarningHtmlCode(HttpServletResponse res) throws IOException { ResourceLocator resourceLocator = new ResourceLocator( "com.stratelia.webactiv.util.peasUtil.multiLang.fileServerBundle", ""); OutputStream out = res.getOutputStream(); StringReader sr = new StringReader(resourceLocator.getString("warning")); try { IOUtils.copy(sr, out); out.flush(); } catch (IOException e) { SilverTrace.warn("silverCrawler", "FileServer.displayWarningHtmlCode", "root.EX_CANT_READ_FILE", "warning properties"); } finally { IOUtils.closeQuietly(sr); IOUtils.closeQuietly(out); } } }