Object,byte[],ByteBuffer之间的转换

package cn.vicky.utils;  
  
import java.io.ByteArrayInputStream;  
import java.io.ByteArrayOutputStream;  
import java.io.IOException;  
import java.io.InputStream;  
import java.io.ObjectInputStream;  
import java.io.ObjectOutputStream;  
import java.nio.ByteBuffer;  
  
import org.apache.mina.core.buffer.IoBuffer;  
  
/** 
 * 对象序列化，反序列化（序列化对象转byte[],ByteBuffer, byte[]转object 
 *  
 * @author Vicky 
 * @email [e-mail] 
 */  
public class ByteUtil {  
  
    public static byte[] getBytes(Object obj) throws IOException {  
        ByteArrayOutputStream bout = new ByteArrayOutputStream();  
        ObjectOutputStream out = new ObjectOutputStream(bout);  
        out.writeObject(obj);  
        out.flush();  
        byte[] bytes = bout.toByteArray();  
        bout.close();  
        out.close();  
        return bytes;  
    }  
  
    public static Object getObject(byte[] bytes) throws IOException, ClassNotFoundException {  
        ByteArrayInputStream bi = new ByteArrayInputStream(bytes);  
        ObjectInputStream oi = new ObjectInputStream(bi);  
        Object obj = oi.readObject();  
        bi.close();  
        oi.close();  
        return obj;  
    }  
  
    public static Object getObject(ByteBuffer byteBuffer) throws ClassNotFoundException, IOException {  
        // 需要mina框架的IoBuffer  
        IoBuffer buffer = IoBuffer.allocate(byteBuffer.capacity()).setAutoExpand(true); // 自动展开  
        for (int i = 0; i < byteBuffer.capacity(); i++) {  
            byteBuffer.position(i);  
            buffer.put(byteBuffer.get());  
        }  
        buffer.position(0);  
        InputStream input = buffer.asInputStream();  
        ObjectInputStream oi = new ObjectInputStream(input);  
        Object obj = oi.readObject();  
        input.close();  
        oi.close();  
        return obj;  
    }  
  
    public static ByteBuffer getByteBuffer(Object obj) throws IOException {  
        byte[] bytes = ByteUtil.getBytes(obj);  
        ByteBuffer buff = ByteBuffer.wrap(bytes);  
        return buff;  
    }  
  
}