清空购物车 - Java Servlet代码示例

//\u0020\u0020清空购物车\n\u0020\u0020public\u0020void\u0020clearCart(HttpServletRequest\u0020req,\u0020HttpServletResponse\u0020resp)\u0020{\n\u0020\u0020\u0020\u0020HttpSession\u0020session=req.getSession();\n\u0020\u0020\u0020\u0020session.removeAttribute("cart");\n\u0020\u0020\u0020\u0020System.out.println("ProductServlet.clearCart"+session.getAttribute("cart"));\n\u0020\u0020\u0020\u0020//\u0020\u0020resp.sendRedirect(req.getContextPath()+"/cart.jsp");\n\u0020\u0020\u0020\u0020try\u0020{\n\u0020\u0020\u0020\u0020\u0020\u0020req.getRequestDispatcher("/cart.jsp").forward(req,resp);\n\u0020\u0020\u0020\u0020}catch(Exception\u0020e)\u0020{\n\u0020\u0020\u0020\u0020\u0020\u0020e.printStackTrace();\n\u0020\u0020\u0020\u0020\u0020\u0020throw\u0020new\u0020RuntimeException(e);\n\u0020\u0020\u0020\u0020}\n\u0020\u0020}