protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
Map<String, String[]> map = request.getParameterMap();
int bookId = Integer.parseInt(request.getParameter("id"));
BookService abs = BookService.getInstance();
abs.editBook(map, bookId);
response.sendRedirect("book_detail/" + bookId);
return;
}
