org.springframework.util.SerializationUtils.java Source code

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Here is the source code for org.springframework.util.SerializationUtils.java

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/*
 * Copyright 2002-2019 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.util;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import org.springframework.lang.Nullable;

/**
 * Static utilities for serialization and deserialization.
 *
 * @author Dave Syer
 * @since 3.0.5
 */
public abstract class SerializationUtils {

    /**
     * Serialize the given object to a byte array.
     * @param object the object to serialize
     * @return an array of bytes representing the object in a portable fashion
     */
    @Nullable
    public static byte[] serialize(@Nullable Object object) {
        if (object == null) {
            return null;
        }
        ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
        try (ObjectOutputStream oos = new ObjectOutputStream(baos)) {
            oos.writeObject(object);
            oos.flush();
        } catch (IOException ex) {
            throw new IllegalArgumentException("Failed to serialize object of type: " + object.getClass(), ex);
        }
        return baos.toByteArray();
    }

    /**
     * Deserialize the byte array into an object.
     * @param bytes a serialized object
     * @return the result of deserializing the bytes
     */
    @Nullable
    public static Object deserialize(@Nullable byte[] bytes) {
        if (bytes == null) {
            return null;
        }
        try (ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(bytes))) {
            return ois.readObject();
        } catch (IOException ex) {
            throw new IllegalArgumentException("Failed to deserialize object", ex);
        } catch (ClassNotFoundException ex) {
            throw new IllegalStateException("Failed to deserialize object type", ex);
        }
    }

}