private void query(HttpServletRequest request, HttpServletResponse response) {
		// TODO Auto-generated method stub
		try {
		int id = Integer.valueOf(request.getParameter("ID")).intValue();
		
		BookDAO bookDAO = new BookDAO();
		Book book= (Book)bookDAO.querryUseId(id);
		BookCategoryDAO bcdao = new BookCategoryDAO();
		BookCategory bc = bcdao.querry(book.getCategoryId());

		request.setAttribute("categoryName", bc.getName());
		request.setAttribute("book", book);
		
		request.getRequestDispatcher("../managerView/infor.jsp").forward(request, response);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} 
	}