考试报告生成，校本题库列表完善

sexam/src/main/java/com/xhkjedu/sexam/service/report/EReportGenerateService.java

         List<Map> classes = eClassMapper.listByExamId(examid);
         Integer exammode = eReportGenerateMapper.getExamModeById(examid);
         List<Map> subjects = eReportGenerateMapper.listSubject(examid, exammode);
+        if(N_Utils.isListEmpty(subjects)) throw new Exception("没有结束的科目");
         List<ERPaperVo> papers = new ArrayList<>();
         Map<String, String> subjectMap = new HashMap<>();
         Map<String, ERPaperVo> paperMap = new HashMap<>();

sstudy/src/main/java/com/xhkjedu/sstudy/service/question/QuestionService.java

 import com.xhkjedu.sstudy.vo.question.QuestionVo;
 import com.xhkjedu.sstudy.vo.subjectbook.DirectorVo;
 import com.xhkjedu.utils.N_Utils;
+import org.springframework.scheduling.annotation.Async;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.util.CollectionUtils;
         if (N_Utils.isNotEmpty(questionids)) {
             List<Map<String, String>> sonList = questionMapper.listSonQuestionForSelect(questionids);
             for (Map<String, Object> map : list) {
-                if (map.get("qlevel").toString().equals("2")) {
-                    Object questionid = map.get("questionid");
-                    List<Map<String, String>> sonqlist = sonList.stream().filter(
-                            s -> s.get("questionpid").equals(questionid)).collect(Collectors.toList());
-                    map.put("sonqlist", sonqlist);
-                }
+                setSonQList(sonList, map);
             }
         }
         return list;
     }
 
+    /**
+     * @Description 处理试题子题
+     * @Date 2023/8/16 8:38
+     * @Author YWX
+     * @Param [sonList, map]
+     * @Return void
+     **/
+    @Async("asyncPoolTaskExecutor")
+    public void setSonQList(List<Map<String, String>> sonList, Map<String, Object> map) {
+        if (map.get("qlevel").toString().equals("2")) {
+            Object questionid = map.get("questionid");
+            List<Map<String, String>> sonqlist = sonList.stream().filter(
+                    s -> s.get("questionpid").equals(questionid)).collect(Collectors.toList());
+            map.put("sonqlist", sonqlist);
+        }
+    }
+
     /**
      * 试题收藏
      * @Param [collect]