优秀实例购物车原题.rar.rar

package servlet; import java.io.IOException; import java.util.HashMap; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import vo.Book; public class AddServlet extends HttpServlet { public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("gb2312"); HttpSession session = request.getSession(); HashMap books = (HashMap) session.getAttribute("books"); // 获取提交的内容 String bookno = request.getParameter("bookno"); String bookname = request.getParameter("bookname"); String strBookprice = request.getParameter("bookprice"); String strBooknumber = request.getParameter("booknumber"); // 存入购物车 Book book = new Book(); book.setBookno(bookno); book.setBookname(bookname); float bookprice = Float.parseFloat(strBookprice); book.setBookprice(bookprice); int booknumber = Integer.parseInt(strBooknumber); book.setBooknumber(booknumber); books.put(bookno, book); // 总钱数增加 float money = (Float) session.getAttribute("money"); money = money + bookprice * booknumber; session.setAttribute("money", money); response.sendRedirect("/Prj19/showCart.jsp"); } }