@RequestMapping("/test")
	public ModelAndView wordList (HttpServletRequest request, HttpServletResponse response, ModelAndView modelAndView,
			@RequestParam(required=false, defaultValue="001001000") String grade,
			@RequestParam(required=false, defaultValue="001001010") String stage,
			@RequestParam(required=false, defaultValue="1") String step) throws Exception {
		
		ModelMap modelMap = modelAndView.getModelMap();
		
		HashMap<String, String> param = new HashMap<String, String>();
		
		param.put("grade", grade);
		param.put("stage", stage);
		param.put("step", step);
		
		List<WordsVO> list = wordService.getWords(param);
		
		// 단어 리스트 세션에 저장.
		WebUtils.setSessionAttribute(request, "WORDS_LIST", list);
		WebUtils.setSessionAttribute(request, "EXAMPLE_LIST", list);
		
		modelMap.addAttribute("grade", grade);
		modelMap.addAttribute("stage", stage);
		modelMap.addAttribute("step", step);
		
		return modelAndView;
	}