1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.myfaces.shared.util;
20
21 import java.io.IOException;
22 import java.io.InputStream;
23 import java.io.ObjectInputStream;
24 import java.io.ObjectStreamClass;
25 import java.lang.reflect.Proxy;
26
27 /**
28 * Tried to deploy v0.4.2 on JBoss 3.2.1 and had a classloading problem again.
29 * The problem seemed to be with JspInfo, line 98. We are using an
30 * ObjectInputStream Class, which then cannot find the classes to deserialize
31 * the input stream. The solution appears to be to subclass ObjectInputStream
32 * (eg. CustomInputStream), and specify a different class-loading mechanism.
33 */
34 public class MyFacesObjectInputStream
35 extends ObjectInputStream
36 {
37 public MyFacesObjectInputStream(InputStream in) throws IOException
38 {
39 super(in);
40 }
41
42 protected Class resolveClass(ObjectStreamClass desc)
43 throws ClassNotFoundException, IOException
44 {
45 try
46 {
47 return ClassUtils.classForName(desc.getName());
48 }
49 catch (ClassNotFoundException e)
50 {
51 return super.resolveClass(desc);
52 }
53 }
54
55 protected Class resolveProxyClass(String[] interfaces)
56 throws IOException, ClassNotFoundException
57 {
58 // Only option that would match the current code would be to
59 // expand ClassLoaderExtension to handle 'getProxyClass', which
60 // would break all existing ClassLoaderExtension implementations
61 Class[] cinterfaces = new Class[interfaces.length];
62 for (int i = 0; i < interfaces.length; i++)
63 {
64 cinterfaces[i] = ClassUtils.classForName(interfaces[i]);
65 }
66
67 try
68 {
69 // Try WebApp ClassLoader first
70 return Proxy.getProxyClass(ClassUtils.getContextClassLoader(), cinterfaces);
71 }
72 catch (Exception ex)
73 {
74 // fallback: Try ClassLoader for MyFacesObjectInputStream (i.e. the myfaces.jar lib)
75 try
76 {
77 return Proxy.getProxyClass(
78 MyFacesObjectInputStream.class.getClassLoader(), cinterfaces);
79 }
80 catch (IllegalArgumentException e)
81 {
82 throw new ClassNotFoundException(e.toString(), e);
83 }
84 }
85 }
86 }