Spring 4 中重定向RedirectAttributes的使用

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、显示参数　

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

　　 相当于才url后面增加param2=value2

2、隐藏参数

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

　　本质上是将参数保存在session中，接收到后再将session删除。