Javaweb

通過重定向防止頁面多次刷新多次請求；

@RequestMapping("/add/{itemId}")
	public String addCartItem(@PathVariable Long itemId, @RequestParam(defaultValue = "1") Integer num,
			HttpServletRequest request, HttpServletResponse response) {
		TaotaoResult result = cartService.addCartItem(itemId, num, request, response);
		return "redirect:/cart/success.html";
	}

	@RequestMapping("/success") 
	public String success() {
		return "cartSuccess";
	}