Java tutorial
/* Sketchy Copyright (C) 2015 Matthew Havlovick http://www.quickdrawbot.com This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Contact Info: Matt Havlovick QuickDraw 470 I St Washougal, WA 98671 matt@quickdrawbot.com http://www.quickdrawbot.com This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. */ package com.sketchy.server.action; import java.io.File; import javax.servlet.http.HttpServletRequest; import org.apache.commons.io.FileUtils; import com.sketchy.image.ImageAttributes; import com.sketchy.server.HttpServer; import com.sketchy.server.JSONServletResult; import com.sketchy.server.ServletAction; import com.sketchy.server.JSONServletResult.Status; public class DeleteImage extends ServletAction { @Override public JSONServletResult execute(HttpServletRequest request) throws Exception { JSONServletResult jsonServletResult = new JSONServletResult(Status.SUCCESS); String imageName = request.getParameter("imageName"); // if it doesn't end with .rendered, this is a source image.. delete all the rendered files if (!imageName.endsWith(".rendered")) { File uploadDirectory = HttpServer.IMAGE_UPLOAD_DIRECTORY; File[] files = uploadDirectory.listFiles(); // delete all the rendered files for (int idx = 0; idx < files.length; idx++) { File file = files[idx]; String fileName = file.getName(); if (fileName.startsWith(imageName)) { if (fileName.endsWith(".rendered.png") || fileName.endsWith(".rendered.dat")) { FileUtils.deleteQuietly(file); } } } } File dataFile = HttpServer.getUploadFile(ImageAttributes.getDataFilename(imageName)); File imageFile = HttpServer.getUploadFile(ImageAttributes.getImageFilename(imageName)); FileUtils.deleteQuietly(dataFile); FileUtils.deleteQuietly(imageFile); return jsonServletResult; } }