/* * Copyright 2002-2016 the original author or authors. * * 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 * * https://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.springframework.core.io;import java.net.MalformedURLException;import java.net.URL;import java.util.Collection;import java.util.LinkedHashSet;import java.util.Set;import org.springframework.util.Assert;import org.springframework.util.ClassUtils;import org.springframework.util.StringUtils;/** * Default implementation of the {@link ResourceLoader} interface. * Used by {@link ResourceEditor}, and serves as base class for * {@link org.springframework.context.support.AbstractApplicationContext}. * Can also be used standalone. * * <p>Will return a {@link UrlResource} if the location value is a URL, * and a {@link ClassPathResource} if it is a non-URL path or a * "classpath:" pseudo-URL. * * @author Juergen Hoeller * @since 10.03.2004 * @see FileSystemResourceLoader * @see org.springframework.context.support.ClassPathXmlApplicationContext */public class DefaultResourceLoader implements ResourceLoader { private ClassLoader classLoader; private final Set<ProtocolResolver> protocolResolvers = new LinkedHashSet<ProtocolResolver>(4); /** * Create a new DefaultResourceLoader. * <p>ClassLoader access will happen using the thread context class loader * at the time of this ResourceLoader's initialization. * @see java.lang.Thread#getContextClassLoader() */ public DefaultResourceLoader() { this.classLoader = ClassUtils.getDefaultClassLoader(); } /** * Create a new DefaultResourceLoader. * @param classLoader the ClassLoader to load class path resources with, or {@code null} * for using the thread context class loader at the time of actual resource access */ public DefaultResourceLoader(ClassLoader classLoader) { this.classLoader = classLoader; } /** * Specify the ClassLoader to load class path resources with, or {@code null} * for using the thread context class loader at the time of actual resource access. * <p>The default is that ClassLoader access will happen using the thread context * class loader at the time of this ResourceLoader's initialization.