protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
BookDao dao = new BookDao();
if (request.getParameter("type") == null || request.getParameter("type").equals("全部类型")) {
request.getSession().setAttribute("queryBooks", dao.queryBook(null, BookDao.QUERY_BY_TYPE));
} else {
LinkedList<Book> list = dao.queryBook(request.getParameter("type"), BookDao.QUERY_BY_TYPE);
request.getSession().setAttribute("queryBooks", list);
}
request.getSession().setAttribute("who", "book");
request.getRequestDispatcher("/back_stage.jsp").forward(request, response);
dao.giveBack();
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String bookname = request.getParameter("bookname");
byte[] bytes = bookname.getBytes("ISO-8859-1");
bookname = new String(bytes, "UTF-8");
HttpSession session = request.getSession();
BookDao dao = new BookDao();
LinkedList<Book> list = new LinkedList<>();
LinkedList<Book> sessionkList = (LinkedList<Book>) session.getAttribute("queryBooks");
if (sessionkList != null) {
for (Book book : sessionkList) {
if (book.getName().contains(bookname)) {
list.add(book);
break;
}
}
}
session.setAttribute("queryBooks", list);
session.setAttribute("who", "book"); // 显示书
request.getRequestDispatcher("/back_stage.jsp").forward(request, response);
dao.giveBack();
}