public Object cloneObject(Object obj) throws Exception{
ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(byteOut);
out.writeObject(obj);
ByteArrayInputStream byteIn = new ByteArrayInputStream(byteOut.toByteArray());
ObjectInputStream in =new ObjectInputStream(byteIn);
return in.readObject();
}
淺克隆：List billBoxListClone = (List)BeanUtils.cloneBean(billBoxList);