cartdel.java

来自「一个jsp的课程设计：电子商务网站」· Java 代码 · 共 71 行

/*
 * cartdel.java
 *
 * Created on 2007年11月22日, 下午5:40
 */

package cart;

import java.io.*;
import java.net.*;

import javax.servlet.*;
import javax.servlet.http.*;

/**
 *
 * @author weiyunbo
 * @version
 */
public class cartdel 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");
        PrintWriter out = response.getWriter();
        String id=request.getParameter("id");
        HttpSession session=request.getSession(true);
        java.util.Vector vector=(java.util.Vector)session.getAttribute("cartVector");
        int i=0;
        for(i=0;i<vector.size();i++){
            cartInfo cat=(cartInfo)vector.get(i);
            if(cat.getFoodid().equals(id)){
                vector.remove(cat);
            }
        }
        session.setAttribute("cartVector",vector);
        response.sendRedirect("mycart.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>
}