RedirectAttributes 的使用
	@RequestMapping(value = "/redirecttest", produces = "application/json;charset=utf-8",method = RequestMethod.GET)

	public String redirectest(HttpServletResponse response, RedirectAttributes attributes ) throws IOException {

		Logs.info("redirectest");

		attributes.addFlashAttribute("param1","value1");

		attributes.addAttribute("param2","value2");

		return "redirect:/redirectaccept";

	}

	@RequestMapping(value = "/redirectaccept", produces = "application/json;charset=utf-8",method = RequestMethod.GET)

	@ResponseBody

	public String redirecaccept(HttpServletResponse response,

			@ModelAttribute("param1") String param1,

			@RequestParam("param2") String param2 )  {

		Logs.info("redirecaccept1, param1 " + param1 + " param2: " +param2 );

		return "ok";

	}

　1、顯示引數　

attributes.addAttribute("param2","value2");

　　 相當於才url後面增加param2=value2

2、隱藏引數
attributes.addFlashAttribute("param1","value1");

　　本質上是將引數儲存在session中，接收到後再將session刪除。