001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.camel.util; 018 019import java.io.IOException; 020import java.io.InputStream; 021import java.io.ObjectInputStream; 022import java.io.ObjectStreamClass; 023import java.lang.reflect.Proxy; 024import java.util.HashMap; 025 026/** 027 * This class is copied from the Apache ActiveMQ project. 028 */ 029@SuppressWarnings("rawtypes") 030public class ClassLoadingAwareObjectInputStream extends ObjectInputStream { 031 032 private static final ClassLoader FALLBACK_CLASS_LOADER = ClassLoadingAwareObjectInputStream.class.getClassLoader(); 033 034 /** 035 * Maps primitive type names to corresponding class objects. 036 */ 037 private static final HashMap<String, Class> PRIM_CLASSES = new HashMap<>(8, 1.0F); 038 039 private final ClassLoader inLoader; 040 041 public ClassLoadingAwareObjectInputStream(InputStream in) throws IOException { 042 super(in); 043 inLoader = in.getClass().getClassLoader(); 044 } 045 046 public ClassLoadingAwareObjectInputStream(ClassLoader classLoader, InputStream in) throws IOException { 047 super(in); 048 if (classLoader != null) { 049 inLoader = classLoader; 050 } else { 051 inLoader = in.getClass().getClassLoader(); 052 } 053 } 054 055 @Override 056 protected Class<?> resolveClass(ObjectStreamClass classDesc) throws IOException, ClassNotFoundException { 057 ClassLoader cl = Thread.currentThread().getContextClassLoader(); 058 return load(classDesc.getName(), cl, inLoader); 059 } 060 061 @Override 062 protected Class<?> resolveProxyClass(String[] interfaces) throws IOException, ClassNotFoundException { 063 ClassLoader cl = Thread.currentThread().getContextClassLoader(); 064 Class[] cinterfaces = new Class[interfaces.length]; 065 for (int i = 0; i < interfaces.length; i++) { 066 cinterfaces[i] = load(interfaces[i], cl); 067 } 068 069 try { 070 return Proxy.getProxyClass(cl, cinterfaces); 071 } catch (IllegalArgumentException e) { 072 try { 073 return Proxy.getProxyClass(inLoader, cinterfaces); 074 } catch (IllegalArgumentException e1) { 075 // ignore 076 } 077 try { 078 return Proxy.getProxyClass(FALLBACK_CLASS_LOADER, cinterfaces); 079 } catch (IllegalArgumentException e2) { 080 // ignore 081 } 082 083 throw new ClassNotFoundException(null, e); 084 } 085 } 086 087 private Class<?> load(String className, ClassLoader... cl) throws ClassNotFoundException { 088 for (ClassLoader loader : cl) { 089 try { 090 return Class.forName(className, false, loader); 091 } catch (ClassNotFoundException e) { 092 // ignore 093 } 094 } 095 // fallback 096 final Class<?> clazz = PRIM_CLASSES.get(className); 097 if (clazz != null) { 098 return clazz; 099 } else { 100 return Class.forName(className, false, FALLBACK_CLASS_LOADER); 101 } 102 } 103 104 static { 105 PRIM_CLASSES.put("boolean", boolean.class); 106 PRIM_CLASSES.put("byte", byte.class); 107 PRIM_CLASSES.put("char", char.class); 108 PRIM_CLASSES.put("short", short.class); 109 PRIM_CLASSES.put("int", int.class); 110 PRIM_CLASSES.put("long", long.class); 111 PRIM_CLASSES.put("float", float.class); 112 PRIM_CLASSES.put("double", double.class); 113 PRIM_CLASSES.put("void", void.class); 114 } 115}