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Session简单实现购物车功能
这个小程序主要就3个页面,一个商品列表页面(HomeServlet),一个是提示加入购物车页面(AddCartTipServlet),一个是显示购物车清单页面(ShowCartServlet)。
HomeServlet页面:
@WebServlet({ "/HomeServlet", "/home" }) public class HomeServlet extends HttpServlet { private static final long serialVersionUID = 1L; public HomeServlet() { super(); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("utf-8"); response.setContentType("text/html;charset=utf-8"); PrintWriter out = response.getWriter(); out.print("书单
"); out.print("人类简史加入购物车
"); out.print("未来简史加入购物车
"); out.print("世界简史加入购物车
"); out.print("时间简史加入购物车
"); out.print("查看购物车
"); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }