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Commons IO example source code file (ClassLoaderObjectInputStream.java)
The Commons IO ClassLoaderObjectInputStream.java source code/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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.apache.commons.io.input; import java.io.IOException; import java.io.InputStream; import java.io.ObjectInputStream; import java.io.ObjectStreamClass; import java.io.StreamCorruptedException; /** * A special ObjectInputStream that loads a class based on a specified * <code>ClassLoader rather than the system default. * <p> * This is useful in dynamic container environments. * * @author Paul Hammant * @version $Id: ClassLoaderObjectInputStream.java 736890 2009-01-23 02:02:22Z niallp $ * @since Commons IO 1.1 */ public class ClassLoaderObjectInputStream extends ObjectInputStream { /** The class loader to use. */ private final ClassLoader classLoader; /** * Constructs a new ClassLoaderObjectInputStream. * * @param classLoader the ClassLoader from which classes should be loaded * @param inputStream the InputStream to work on * @throws IOException in case of an I/O error * @throws StreamCorruptedException if the stream is corrupted */ public ClassLoaderObjectInputStream( ClassLoader classLoader, InputStream inputStream) throws IOException, StreamCorruptedException { super(inputStream); this.classLoader = classLoader; } /** * Resolve a class specified by the descriptor using the * specified ClassLoader or the super ClassLoader. * * @param objectStreamClass descriptor of the class * @return the Class object described by the ObjectStreamClass * @throws IOException in case of an I/O error * @throws ClassNotFoundException if the Class cannot be found */ @Override protected Class<?> resolveClass(ObjectStreamClass objectStreamClass) throws IOException, ClassNotFoundException { Class<?> clazz = Class.forName(objectStreamClass.getName(), false, classLoader); if (clazz != null) { // the classloader knows of the class return clazz; } else { // classloader knows not of class, let the super classloader do it return super.resolveClass(objectStreamClass); } } } Other Commons IO examples (source code examples)Here is a short list of links related to this Commons IO ClassLoaderObjectInputStream.java source code file: |
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