public static BookCategoryDO bo2do(BookCategory bookCategory) {
		if (bookCategory == null) {
			return null;
		}

		BookCategoryDO bookCategoryDO = new BookCategoryDO();
		BeanUtils.copyProperties(bookCategory, bookCategoryDO, IGNORE_PARAM);
		if (bookCategory.getParent() != null) {
			bookCategoryDO.setParentId(bookCategory.getParent().getId());
		}

		return bookCategoryDO;
	}