springmvc前台传递到controller层的中文乱码解决方法

   @RequestMapping("/judge")
    public String judgeLogger(@RequestParam String userName, @RequestParam String password, @RequestParam String sex, RedirectAttributes redirectAttributes) {
//    乱码解决方法
        try {
            String name = new String(userName.getBytes("iso-8859-1"), "UTF-8");
            String s = new String(sex.getBytes("iso-8859-1"), "utf-8");

//--------------------------------------------------------------------------------
            if (name != null && password != null && s != null) {
                    if (loggerService.judgeLogger(name)==1) {
                     redirectAttributes.addFlashAttribute("userName",name);
                     redirectAttributes.addFlashAttribute("password",password);
                     redirectAttributes.addFlashAttribute("sex",s);
                        return "redirect:/log.do";
                    }
            }
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return "404";
        }
        return "404";
    }

在传递过来的前台数据进行一次转码即可解决。但是我之前设置过request和response的编码，但是然并卵。