| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.shiro.io; |
| |
| import java.io.*; |
| |
| /** |
| * Serializer implementation that uses the default JVM serialization mechanism (Object Input/Output Streams). |
| * |
| * @since 0.9 |
| */ |
| public class DefaultSerializer<T> implements Serializer<T> { |
| |
| /** |
| * This implementation serializes the Object by using an {@link ObjectOutputStream} backed by a |
| * {@link ByteArrayOutputStream}. The {@code ByteArrayOutputStream}'s backing byte array is returned. |
| * |
| * @param o the Object to convert into a byte[] array. |
| * @return the bytes representing the serialized object using standard JVM serialization. |
| * @throws SerializationException wrapping a {@link IOException} if something goes wrong with the streams. |
| */ |
| public byte[] serialize(T o) throws SerializationException { |
| if (o == null) { |
| String msg = "argument cannot be null."; |
| throw new IllegalArgumentException(msg); |
| } |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| BufferedOutputStream bos = new BufferedOutputStream(baos); |
| |
| try { |
| ObjectOutputStream oos = new ObjectOutputStream(bos); |
| oos.writeObject(o); |
| oos.close(); |
| return baos.toByteArray(); |
| } catch (IOException e) { |
| String msg = "Unable to serialize object [" + o + "]. " + |
| "In order for the DefaultSerializer to serialize this object, the [" + o.getClass().getName() + "] " + |
| "class must implement java.io.Serializable."; |
| throw new SerializationException(msg, e); |
| } |
| } |
| |
| /** |
| * This implementation deserializes the byte array using a {@link ObjectInputStream} using a source |
| * {@link ByteArrayInputStream} constructed with the argument byte array. |
| * |
| * @param serialized the raw data resulting from a previous {@link #serialize(Object) serialize} call. |
| * @return the deserialized/reconstituted object based on the given byte array |
| * @throws SerializationException if anything goes wrong using the streams. |
| */ |
| public T deserialize(byte[] serialized) throws SerializationException { |
| if (serialized == null) { |
| String msg = "argument cannot be null."; |
| throw new IllegalArgumentException(msg); |
| } |
| ByteArrayInputStream bais = new ByteArrayInputStream(serialized); |
| BufferedInputStream bis = new BufferedInputStream(bais); |
| try { |
| ObjectInputStream ois = new ClassResolvingObjectInputStream(bis); |
| @SuppressWarnings({"unchecked"}) |
| T deserialized = (T) ois.readObject(); |
| ois.close(); |
| return deserialized; |
| } catch (Exception e) { |
| String msg = "Unable to deserialize argument byte array."; |
| throw new SerializationException(msg, e); |
| } |
| } |
| } |