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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.
/*
* Copyright (C) 2008 feilong
*
* 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 com.feilong.coreextension.io;
import static com.feilong.core.CharsetType.ISO_8859_1;
import static com.feilong.core.CharsetType.UTF8;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;
import com.feilong.core.DefaultRuntimeException;
import com.feilong.core.net.URIUtil;
import com.feilong.io.IOUtil;
import com.feilong.io.InputStreamUtil;
/**
* {@link java.io.Serializable}util.
*
* @author feilong
* @see java.io.Serializable
* @see "c3p0 com.mchange.v2.ser.SerializableUtils#serializeToByteArray(Object)"
* @see com.feilong.lib.lang3.SerializationUtils
* @see "org.hibernate.util.SerializationHelper"
* @see "org.springframework.util.SerializationUtils"
* @see "org.springframework.core.serializer.DefaultSerializer"
* @since 1.2.1
*/
public final class SerializableUtil{
/** Don't let anyone instantiate this class. */
private SerializableUtil(){
//AssertionError不是必须的. 但它可以避免不小心在类的内部调用构造器. 保证该类在任何情况下都不会被实例化.
//see 《Effective Java》 2nd
throw new AssertionError("No " + getClass().getName() + " instances for you!");
}
//---------------------------------------------------------------
/**
* To byte array.
*
* @param serializable
* the serializable
* @return the byte[]
* @see com.feilong.lib.lang3.SerializationUtils#serialize(Serializable)
*/
public static byte[] serialize(Serializable serializable){
return com.feilong.lib.lang3.SerializationUtils.serialize(serializable);
}
/**
* Deserialize.
*
* @param
* the generic type
* @param objectData
* the object data
* @return the t
* @see com.feilong.lib.lang3.SerializationUtils#deserialize(byte[])
*/
public static T deserialize(byte[] objectData){
return com.feilong.lib.lang3.SerializationUtils.deserialize(objectData);
}
/**
* 返回对象内存大小.
*
*
* 只有支持 {@link java.io.Serializable Serializable}或 {@link java.io.Externalizable Externalizable} 接口的对象才能被
* {@link java.io.ObjectInputStream ObjectInputStream}/{@link java.io.ObjectOutputStream ObjectOutputStream}所操作！
*
*
* @param serializable
* the serializable
* @return the int
* @see #toByteArrayOutputStream(Serializable)
* @see java.io.ByteArrayOutputStream#size()
*/
public static int size(Serializable serializable){
ByteArrayOutputStream byteArrayOutputStream = null;
try{
byteArrayOutputStream = toByteArrayOutputStream(serializable);
return byteArrayOutputStream.size();
}finally{
IOUtil.closeQuietly(byteArrayOutputStream);
}
}
//---------------------------------------------------------------
/**
* To byte array output stream.
*
* @param serializable
* the serializable
* @return the byte array output stream
* @see java.io.ObjectOutputStream#ObjectOutputStream(OutputStream)
* @see java.io.ObjectOutputStream#writeObject(Object)
* @see com.feilong.lib.lang3.SerializationUtils#serialize(Serializable, OutputStream)
*/
private static ByteArrayOutputStream toByteArrayOutputStream(Serializable serializable){
ObjectOutputStream objectOutputStream = null;
try (ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream()){
objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
objectOutputStream.writeObject(serializable);
return byteArrayOutputStream;
}catch (IOException e){
throw new DefaultRuntimeException(e);
}finally{
IOUtil.closeQuietly(objectOutputStream);
}
}
//---------------------------------------------------------------
/**
* To string.
*
* @param serializable
* the serializable
* @return the string
* @see #toByteArrayOutputStream(Serializable)
* @deprecated 转字符串值得商榷
*/
@Deprecated
public static String toString(Serializable serializable){
ByteArrayOutputStream byteArrayOutputStream = null;
try{
byteArrayOutputStream = toByteArrayOutputStream(serializable);
String serializableString = byteArrayOutputStream.toString(ISO_8859_1);
return URIUtil.encode(serializableString, UTF8);
}catch (IOException e){
throw new DefaultRuntimeException(e);
}finally{
IOUtil.closeQuietly(byteArrayOutputStream);
}
}
//---------------------------------------------------------------
/**
* To object.
*
* @param
* the generic type
* @param serializableString
* the serializable string
* @return the t
* @see "com.feilong.lib.io.IOUtils#toInputStream(String, Charset)"
* @see com.feilong.lib.lang3.SerializationUtils#deserialize(InputStream)
* @deprecated 转字符串值得商榷
*/
@Deprecated
public static T toObject(String serializableString){
InputStream inputStream = null;
try{
String decodeString = URIUtil.encode(serializableString, UTF8);
inputStream = InputStreamUtil.newByteArrayInputStream(decodeString, ISO_8859_1);
return com.feilong.lib.lang3.SerializationUtils.deserialize(inputStream);
}finally{
IOUtil.closeQuietly(inputStream);
}
}
}