Java tutorial
/* * Copyright 2011 Outerthought bvba * * 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 org.lilyproject.lilyservertestfw; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.net.JarURLConnection; import java.net.URISyntaxException; import java.net.URL; import java.net.URLConnection; import java.util.Enumeration; import java.util.jar.JarEntry; import java.util.jar.JarFile; import org.apache.commons.io.FileUtils; import org.apache.commons.lang.StringUtils; public class ConfUtil { public static final String CONF_RESOURCE_PATH = "org/lilyproject/lilyservertestfw/conf/"; private ConfUtil() { } public static void copyConfResources(URL confUrl, String confResourcePath, File confDir) throws IOException, URISyntaxException { URLConnection urlConnection = confUrl.openConnection(); if (urlConnection instanceof JarURLConnection) { copyFromJar(confDir, confResourcePath, (JarURLConnection) urlConnection); } else { FileUtils.copyDirectory(new File(confUrl.toURI()), confDir); } } public static void copyFromJar(File confDir, String confResourcePath, JarURLConnection jarConnection) throws IOException { JarFile jarFile = jarConnection.getJarFile(); Enumeration<JarEntry> entries = jarFile.entries(); while (entries.hasMoreElements()) { JarEntry entry = entries.nextElement(); if (entry.getName().startsWith(confResourcePath)) { String fileName = StringUtils.removeStart(entry.getName(), confResourcePath); if (entry.isDirectory()) { File subDir = new File(confDir, fileName); subDir.mkdirs(); } else { InputStream entryInputStream = null; try { entryInputStream = jarFile.getInputStream(entry); FileUtils.copyInputStreamToFile(entryInputStream, new File(confDir, fileName)); } finally { if (entryInputStream != null) { entryInputStream.close(); } } } } } } }