spring DeserializingConverter 源码
spring DeserializingConverter 代码
文件路径：/spring-core/src/main/java/org/springframework/core/serializer/support/DeserializingConverter.java
/*
* 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
*
* https://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.support;
import java.io.ByteArrayInputStream;
import org.springframework.core.convert.converter.Converter;
import org.springframework.core.serializer.DefaultDeserializer;
import org.springframework.core.serializer.Deserializer;
import org.springframework.util.Assert;
/**
* A {@link Converter} that delegates to a
* {@link org.springframework.core.serializer.Deserializer}
* to convert data in a byte array to an object.
*
* @author Gary Russell
* @author Mark Fisher
* @author Juergen Hoeller
* @since 3.0.5
*/
public class DeserializingConverter implements Converter<byte[], Object> {
private final Deserializer<Object> deserializer;
/**
* Create a {@code DeserializingConverter} with default {@link java.io.ObjectInputStream}
* configuration, using the "latest user-defined ClassLoader".
* @see DefaultDeserializer#DefaultDeserializer()
*/
public DeserializingConverter() {
this.deserializer = new DefaultDeserializer();
}
/**
* Create a {@code DeserializingConverter} for using an {@link java.io.ObjectInputStream}
* with the given {@code ClassLoader}.
* @since 4.2.1
* @see DefaultDeserializer#DefaultDeserializer(ClassLoader)
*/
public DeserializingConverter(ClassLoader classLoader) {
this.deserializer = new DefaultDeserializer(classLoader);
}
/**
* Create a {@code DeserializingConverter} that delegates to the provided {@link Deserializer}.
*/
public DeserializingConverter(Deserializer<Object> deserializer) {
Assert.notNull(deserializer, "Deserializer must not be null");
this.deserializer = deserializer;
}
@Override
public Object convert(byte[] source) {
ByteArrayInputStream byteStream = new ByteArrayInputStream(source);
try {
return this.deserializer.deserialize(byteStream);
}
catch (Throwable ex) {
throw new SerializationFailedException("Failed to deserialize payload. " +
"Is the byte array a result of corresponding serialization for " +
this.deserializer.getClass().getSimpleName() + "?", ex);
}
}
}
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