update

stmms-web/src/main/java/cn/com/qmth/stmms/admin/exam/LibraryController.java

@@ -217,16 +217,18 @@ public class LibraryController extends BaseExamController {
             @RequestParam(required = false) Integer groupNumber) {
         int examId = getSessionExamId(request);
         ExamStudent student = studentService.findById(studentId);
+        List<ExamQuestion> questions = questionService.findByExamAndSubjectAndObjective(examId,
+                student.getSubjectCode(), false);
         if (groupNumber != null) {
-            List<ExamQuestion> questions = questionService.findByExamAndSubjectAndObjectiveAndGroupNumber(examId,
+            questions = questionService.findByExamAndSubjectAndObjectiveAndGroupNumber(examId,
                     student.getSubjectCode(), false, groupNumber);
-            List<String> strings = new ArrayList<String>();
-            for (ExamQuestion examQuestion : questions) {
-                strings.add(examQuestion.getQuestionNumber());
-            }
-            String questionNumbers = String.join(",", strings);
-            model.addAttribute("questionNumbers", questionNumbers);
         }
+        List<String> strings = new ArrayList<String>();
+        for (ExamQuestion examQuestion : questions) {
+            strings.add(examQuestion.getQuestionNumber());
+        }
+        String questionNumbers = String.join(",", strings);
+        model.addAttribute("questionNumbers", questionNumbers);
         model.addAttribute("fileServer", fileService.getFileServer());
         model.addAttribute("answerUrl", fileService.getJsonUri(student.getExamId(), student.getSecretNumber()));
         model.addAttribute("paperUrl",