fix : 返回没有答案的情况

src/main/java/nju/seec/helper/controller/QuizController.java

@@ -71,7 +71,7 @@ public class QuizController {
     /**
      * 获得某一测试的详细内容
      */
-//    @Auth(roles = {UserType.STUDENT,UserType.TEACHER}, message = "获得某一测试的详细内容")
+    @Auth(roles = {UserType.STUDENT,UserType.TEACHER}, message = "获得某一测试的详细内容")
     @GetMapping("/{quizId}")
     public QuizVO GetOneQuiz(LoginUser user, @PathVariable("quizId") String quizId) {
         return quizService.combineQuizWithAnswer(Long.valueOf(quizId),user.getId(),user.getType());