| /* |
| * 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.catalina.util; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectStreamClass; |
| import java.lang.reflect.Proxy; |
| |
| /** |
| * Custom subclass of <code>ObjectInputStream</code> that loads from the |
| * class loader for this web application. This allows classes defined only |
| * with the web application to be found correctly. |
| * |
| * @author Craig R. McClanahan |
| * @author Bip Thelin |
| * @version $Id: CustomObjectInputStream.java,v 1.1 2011/06/28 21:08:14 rherrmann Exp $ |
| */ |
| |
| public final class CustomObjectInputStream |
| extends ObjectInputStream { |
| |
| |
| /** |
| * The class loader we will use to resolve classes. |
| */ |
| private ClassLoader classLoader = null; |
| |
| |
| /** |
| * Construct a new instance of CustomObjectInputStream |
| * |
| * @param stream The input stream we will read from |
| * @param classLoader The class loader used to instantiate objects |
| * |
| * @exception IOException if an input/output error occurs |
| */ |
| public CustomObjectInputStream(InputStream stream, |
| ClassLoader classLoader) |
| throws IOException { |
| |
| super(stream); |
| this.classLoader = classLoader; |
| } |
| |
| |
| /** |
| * Load the local class equivalent of the specified stream class |
| * description, by using the class loader assigned to this Context. |
| * |
| * @param classDesc Class description from the input stream |
| * |
| * @exception ClassNotFoundException if this class cannot be found |
| * @exception IOException if an input/output error occurs |
| */ |
| @Override |
| public Class<?> resolveClass(ObjectStreamClass classDesc) |
| throws ClassNotFoundException, IOException { |
| try { |
| return Class.forName(classDesc.getName(), false, classLoader); |
| } catch (ClassNotFoundException e) { |
| try { |
| // Try also the superclass because of primitive types |
| return super.resolveClass(classDesc); |
| } catch (ClassNotFoundException e2) { |
| // Rethrow original exception, as it can have more information |
| // about why the class was not found. BZ 48007 |
| throw e; |
| } |
| } |
| } |
| |
| |
| /** |
| * Return a proxy class that implements the interfaces named in a proxy |
| * class descriptor. Do this using the class loader assigned to this |
| * Context. |
| */ |
| @Override |
| protected Class<?> resolveProxyClass(String[] interfaces) |
| throws IOException, ClassNotFoundException { |
| |
| Class<?>[] cinterfaces = new Class[interfaces.length]; |
| for (int i = 0; i < interfaces.length; i++) |
| cinterfaces[i] = classLoader.loadClass(interfaces[i]); |
| |
| try { |
| return Proxy.getProxyClass(classLoader, cinterfaces); |
| } catch (IllegalArgumentException e) { |
| throw new ClassNotFoundException(null, e); |
| } |
| } |
| |
| } |