org.springframework.core

Class ConfigurableObjectInputStream

java.lang.Object

java.io.InputStream

java.io.ObjectInputStream

org.springframework.core.ConfigurableObjectInputStream

All Implemented Interfaces:

java.io.Closeable, java.io.DataInput, java.io.ObjectInput, java.io.ObjectStreamConstants, java.lang.AutoCloseable

Direct Known Subclasses:

CodebaseAwareObjectInputStream

public class ConfigurableObjectInputStream
extends java.io.ObjectInputStream

Special ObjectInputStream subclass that resolves class names against a specific ClassLoader. Serves as base class for CodebaseAwareObjectInputStream.

Since:

2.5.5

Author:

Juergen Hoeller

Nested Class Summary

Nested classes/interfaces inherited from class java.io.ObjectInputStream

java.io.ObjectInputStream.GetField

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	acceptProxyClasses
private java.lang.ClassLoader	classLoader

Fields inherited from interface java.io.ObjectStreamConstants

baseWireHandle, PROTOCOL_VERSION_1, PROTOCOL_VERSION_2, SC_BLOCK_DATA, SC_ENUM, SC_EXTERNALIZABLE, SC_SERIALIZABLE, SC_WRITE_METHOD, STREAM_MAGIC, STREAM_VERSION, SUBCLASS_IMPLEMENTATION_PERMISSION, SUBSTITUTION_PERMISSION, TC_ARRAY, TC_BASE, TC_BLOCKDATA, TC_BLOCKDATALONG, TC_CLASS, TC_CLASSDESC, TC_ENDBLOCKDATA, TC_ENUM, TC_EXCEPTION, TC_LONGSTRING, TC_MAX, TC_NULL, TC_OBJECT, TC_PROXYCLASSDESC, TC_REFERENCE, TC_RESET, TC_STRING

Constructor Summary

Constructors

Constructor and Description
ConfigurableObjectInputStream(java.io.InputStream in, java.lang.ClassLoader classLoader) Create a new ConfigurableObjectInputStream for the given InputStream and ClassLoader.
ConfigurableObjectInputStream(java.io.InputStream in, java.lang.ClassLoader classLoader, boolean acceptProxyClasses) Create a new ConfigurableObjectInputStream for the given InputStream and ClassLoader.

Method Summary

Modifier and Type	Method and Description
protected java.lang.ClassLoader	getFallbackClassLoader() Return the fallback ClassLoader to use when no ClassLoader was specified and ObjectInputStream's own default ClassLoader failed.
protected java.lang.Class<?>	resolveClass(java.io.ObjectStreamClass classDesc)
protected java.lang.Class<?>	resolveFallbackIfPossible(java.lang.String className, java.lang.ClassNotFoundException ex) Resolve the given class name against a fallback class loader.
protected java.lang.Class<?>	resolveProxyClass(java.lang.String[] interfaces)

Methods inherited from class java.io.ObjectInputStream

available, close, defaultReadObject, enableResolveObject, read, read, readBoolean, readByte, readChar, readClassDescriptor, readDouble, readFields, readFloat, readFully, readFully, readInt, readLine, readLong, readObject, readObjectOverride, readShort, readStreamHeader, readUnshared, readUnsignedByte, readUnsignedShort, readUTF, registerValidation, resolveObject, skipBytes

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.io.ObjectInput

read, skip

Field Detail

classLoader

private final java.lang.ClassLoader classLoader

acceptProxyClasses

private final boolean acceptProxyClasses

Constructor Detail

ConfigurableObjectInputStream

public ConfigurableObjectInputStream(java.io.InputStream in,
                                     java.lang.ClassLoader classLoader)
                              throws java.io.IOException

Create a new ConfigurableObjectInputStream for the given InputStream and ClassLoader.

Parameters:

in - the InputStream to read from

classLoader - the ClassLoader to use for loading local classes

Throws:

java.io.IOException

See Also:

ObjectInputStream.ObjectInputStream(java.io.InputStream)

ConfigurableObjectInputStream

public ConfigurableObjectInputStream(java.io.InputStream in,
                                     java.lang.ClassLoader classLoader,
                                     boolean acceptProxyClasses)
                              throws java.io.IOException

Create a new ConfigurableObjectInputStream for the given InputStream and ClassLoader.

Parameters:

in - the InputStream to read from

classLoader - the ClassLoader to use for loading local classes

acceptProxyClasses - whether to accept deserialization of proxy classes (may be deactivated as a security measure)

Throws:

java.io.IOException

See Also:

ObjectInputStream.ObjectInputStream(java.io.InputStream)

Method Detail

resolveClass

protected java.lang.Class<?> resolveClass(java.io.ObjectStreamClass classDesc)
                                   throws java.io.IOException,
                                          java.lang.ClassNotFoundException

Overrides:

resolveClass in class java.io.ObjectInputStream

Throws:

java.io.IOException

java.lang.ClassNotFoundException

resolveProxyClass

protected java.lang.Class<?> resolveProxyClass(java.lang.String[] interfaces)
                                        throws java.io.IOException,
                                               java.lang.ClassNotFoundException

Overrides:

resolveProxyClass in class java.io.ObjectInputStream

Throws:

java.io.IOException

java.lang.ClassNotFoundException

resolveFallbackIfPossible

protected java.lang.Class<?> resolveFallbackIfPossible(java.lang.String className,
                                                       java.lang.ClassNotFoundException ex)
                                                throws java.io.IOException,
                                                       java.lang.ClassNotFoundException

Resolve the given class name against a fallback class loader.

The default implementation simply rethrows the original exception, since there is no fallback available.

Parameters:

className - the class name to resolve

ex - the original exception thrown when attempting to load the class

Returns:

the newly resolved class (never null)

Throws:

java.io.IOException

java.lang.ClassNotFoundException

getFallbackClassLoader

protected java.lang.ClassLoader getFallbackClassLoader()
                                                throws java.io.IOException

Return the fallback ClassLoader to use when no ClassLoader was specified and ObjectInputStream's own default ClassLoader failed.

The default implementation simply returns null.

Throws:

java.io.IOException