buycontroller.java

在网上书店买书

/*
 * BuyController.java
 *
 * Created on 2008年5月9日, 下午7:59
 */

package Controller;

import java.io.*;
import java.net.*;
import Model.Book;
import Model.Basket;
import javax.servlet.*;
import javax.servlet.http.*;

/**
 *
 * @author Administrator
 * @version
 */
public class BuyController extends HttpServlet {
    
    /** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        Basket basket=(Basket)(request.getSession(true).getAttribute("basket"));
        PrintWriter out = response.getWriter();
        String ISBN=request.getParameter("ISBN");
        String Title=request.getParameter("Title");
        String image=request.getParameter("image");
        double price=Double.parseDouble(request.getParameter("Price"));
        Book book=new Book();
        book.setISBN(ISBN);
        book.setTilte(Title);
        book.setPrice(price);
        book.addQuanty();
        book.setImage(image);
        book.setTotalPrice();
        if(basket==null)
        {
            basket=new Basket();
            basket.addBook(book);
        }
        else
        {
            basket.addBook(book);
        }
        response.sendRedirect("index.jsp");
        out.close();
    }
    
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    
    /** Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    
    /** Returns a short description of the servlet.
     */
    public String getServletInfo() {
        return "Short description";
    }
    // </editor-fold>
}