序列化和反序列化对象到 数据库

/*
     * 将对象转化成java.sql.Blob 
     * 要求 对象是序列化的
      */
     public  java.sql.Blob ObjectToBlob(Object obj)  throws  IOException{
         try  {
            ByteArrayOutputStream out  =   new  ByteArrayOutputStream();
            ObjectOutputStream outputStream  =   new  ObjectOutputStream(out);
            outputStream.writeObject(obj);
             byte [] bytes  =  out.toByteArray();
            outputStream.close();
             return  Hibernate.createBlob(bytes);
        }  catch  (Exception e) {
             //  TODO: handle exception
            System.out.println( " ObjectToBlob " );
             return   null ;
        }        
    }
    
    
     /*
     * 将java.sql.Blob 转化成 对象 相应对象
     * 要求 对象是序列化的
      */     
     public  Object BlobToObject(java.sql.Blob desblob,Object obj)  throws  IOException{
         try  {
            ObjectInputStream in  =   new  ObjectInputStream(desblob.getBinaryStream());
            obj  =   in.readObject();
            in.close();    
             return  obj;
        }  catch  (Exception e) {
             //  TODO: handle exception
            System.out.println( " BlobToObject " );
            e.printStackTrace();
             return   null ;
        }        
    }