JAVA序列化的两种方式【转贴】

JAVA序列化的两种方式
//大家都知道Serializable是一个mark interface,告诉JVM这个对象可以被转换成二进制流来传输.
//Serializable 在我们实现这个接口的时候,我们可以使用4个私有方法来控制序列化的过程:
//我们来看一个例子:
public class FooImpl implements java.io.Serializable
{
private String message;
public String getFoo()
{
return message;
}
public void setMessage( String message )
{
this.message = message;
}
private void writeObject( java.io.ObjectOutputStream out ) throws IOException
{
System.out.println( "writeObject invoked" );
out.writeObject( this.message == null ? "hohohahaha" : this.message );
}
private void readObject( java.io.ObjectInputStream in ) throws IOException, ClassNotFoundException
{
System.out.println( "readObject invoked" );
this.message = (String) in.readObject();
}
private Object writeReplace() throws ObjectStreamException
{
System.out.println( "writeReplace invoked" );
return this;
}
private Object readResolve() throws ObjectStreamException
{
System.out.println( "readResolve invoked" );
return this;
}
public Object serialize() throws IOException, ClassNotFoundException
{
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream( baos );
oos.writeObject( this );
ByteArrayInputStream bais = new ByteArrayInputStream( baos.toByteArray() );
ObjectInputStream ois = new ObjectInputStream( bais );
return ois.readObject();
}
public static void main(String[] args) throws IOException, ClassNotFoundException
{
FooImpl fooimpl = new FooImpl();
fooimpl.se