/*
* Copyright 2002-2015 the original author or authors.
*
* Licensed 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.springframework.core.serializer;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import org.springframework.core.ConfigurableObjectInputStream;
import org.springframework.core.NestedIOException;
/**
* A default {@link Deserializer} implementation that reads an input stream
* using Java serialization.
*
* @author Gary Russell
* @author Mark Fisher
* @author Juergen Hoeller
* @since 3.0.5
* @see ObjectInputStream
*/
public class DefaultDeserializer implements Deserializer<Object> {
private final ClassLoader classLoader;
/**
* Create a {@code DefaultDeserializer} with default {@link ObjectInputStream}
* configuration, using the "latest user-defined ClassLoader".
*/
public DefaultDeserializer() {
this.classLoader = null;
}
/**
* Create a {@code DefaultDeserializer} for using an {@link ObjectInputStream}
* with the given {@code ClassLoader}.
* @since 4.2.1
* @see ConfigurableObjectInputStream#ConfigurableObjectInputStream(InputStream, ClassLoader)
*/
public DefaultDeserializer(ClassLoader classLoader) {
this.classLoader = classLoader;
}
/**
* Read from the supplied {@code InputStream} and deserialize the contents
* into an object.
* @see ObjectInputStream#readObject()
*/
@Override
@SuppressWarnings("resource")
public Object deserialize(InputStream inputStream) throws IOException {
ObjectInputStream objectInputStream = new ConfigurableObjectInputStream(inputStream, this.classLoader);
try {
return objectInputStream.readObject();
}
catch (ClassNotFoundException ex) {
throw new NestedIOException("Failed to deserialize object type", ex);
}
}
}