org.springframework.core
Class ConfigurableObjectInputStream

java.lang.Object
  java.io.InputStream
      java.io.ObjectInputStream
          org.springframework.core.ConfigurableObjectInputStream

All Implemented Interfaces:

Closeable, DataInput, ObjectInput, ObjectStreamConstants

Direct Known Subclasses:

CodebaseAwareObjectInputStream

public class ConfigurableObjectInputStream
extends 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

ObjectInputStream.GetField

Field Summary

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

ConfigurableObjectInputStream(InputStream in, ClassLoader classLoader)
Create a new ConfigurableObjectInputStream for the given InputStream and ClassLoader.

ConfigurableObjectInputStream(InputStream in, ClassLoader classLoader, boolean acceptProxyClasses)
Create a new ConfigurableObjectInputStream for the given InputStream and ClassLoader.

Method Summary

protected ClassLoader	getFallbackClassLoader() Return the fallback ClassLoader to use when no ClassLoader was specified and ObjectInputStream's own default ClassLoader failed.
protected Class	resolveClass(ObjectStreamClass classDesc)
protected Class	resolveFallbackIfPossible(String className, ClassNotFoundException ex) Resolve the given class name against a fallback class loader.
protected Class	resolveProxyClass(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

Constructor Detail

ConfigurableObjectInputStream

public ConfigurableObjectInputStream(InputStream in,
                                     ClassLoader classLoader)
                              throws 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:

IOException

See Also:

ObjectInputStream.ObjectInputStream(java.io.InputStream)

ConfigurableObjectInputStream

public ConfigurableObjectInputStream(InputStream in,
                                     ClassLoader classLoader,
                                     boolean acceptProxyClasses)
                              throws 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:

IOException

See Also:

ObjectInputStream.ObjectInputStream(java.io.InputStream)

Method Detail

resolveClass

protected Class resolveClass(ObjectStreamClass classDesc)
                      throws IOException,
                             ClassNotFoundException

Overrides:

resolveClass in class ObjectInputStream

Throws:

IOException

ClassNotFoundException

resolveProxyClass

protected Class resolveProxyClass(String[] interfaces)
                           throws IOException,
                                  ClassNotFoundException

Overrides:

resolveProxyClass in class ObjectInputStream

Throws:

IOException

ClassNotFoundException

resolveFallbackIfPossible

protected Class resolveFallbackIfPossible(String className,
                                          ClassNotFoundException ex)
                                   throws IOException,
                                          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:

IOException

ClassNotFoundException

getFallbackClassLoader

protected ClassLoader getFallbackClassLoader()
                                      throws 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:

IOException