@RequestMapping(value = "/ChoiceQuestion", method = RequestMethod.GET)
 public String ChoiceQuestion(
     @RequestParam(value = "id", required = true, defaultValue = "1") String id, Model model) {
   model.addAttribute(QUESTIONNUM, choiceQuestionRepository.count());
   model.addAttribute(CHOICEQUESTION, choiceQuestionRepository.findById(Long.valueOf(id)));
   return "views/answerPage";
 }
 @RequestMapping(value = "/RecordAndRead", method = RequestMethod.GET)
 public String RecordAndRead(HttpServletRequest request, Model model) {
   Map<String, String[]> params = request.getParameterMap();
   Set<String> keys = params.keySet();
   HashMap<String, String> map = new HashMap<>();
   for (String key : keys) {
     Long qid = Long.valueOf(key);
     String uanswer = params.get(key)[0];
     String answer = choiceQuestionRepository.findOne(qid).getAnswer();
     int judge = (answer.equals(uanswer)) ? 1 : 0;
     ansRecordRepository.save(
         new AnsRecord(qid, 1L, uanswer, new Timestamp(new java.util.Date().getTime()), judge));
     map.put("r" + key, (judge == 1) ? "right" : "wrong");
   }
   model.addAllAttributes(map);
   model.addAttribute("QuestionNum", keys.size());
   return "views/result";
 }