airport-admin/src/main/java/com/sundot/airport/web/controller/system/SysHomeReportController.java

@@ -450,8 +450,14 @@ public class SysHomeReportController extends BaseController {
      */
     private List<SysHomeReportDetailDto> getAnswerList(List<SysHomePageDetailQueryParamDto> dtoList) {
         List<SysHomeReportDetailDto> result = new ArrayList<>();
-        for (SysHomePageDetailQueryParamDto item : dtoList) {
-            result.add(getAnswer(item));
+        // 批量调用前统一初始化部门缓存，避免每次 answerData 都重复查询数据库
+        accuracyStatisticsService.initDeptCache();
+        try {
+            for (SysHomePageDetailQueryParamDto item : dtoList) {
+                result.add(getAnswer(item));
+            }
+        } finally {
+            accuracyStatisticsService.clearDeptCache();
         }
         return result;
     }

airport-exam/src/main/java/com/sundot/airport/exam/service/IAccuracyStatisticsService.java

@@ -69,4 +69,14 @@ public interface IAccuracyStatisticsService {
      * @return 首页报表-抽问抽答正确率数据
      */
     com.sundot.airport.common.core.domain.SysHomeReportDetailDto answerData(BaseLargeScreenQueryParamDto dto);
+
+    /**
+     * 初始化部门缓存（批量调用 answerData 前调用，避免重复查询数据库）
+     */
+    void initDeptCache();
+
+    /**
+     * 清理部门缓存
+     */
+    void clearDeptCache();
 }

airport-exam/src/main/java/com/sundot/airport/exam/service/impl/AccuracyStatisticsServiceImpl.java

@@ -159,7 +159,8 @@ public class AccuracyStatisticsServiceImpl implements IAccuracyStatisticsService
     /**
      * 初始化部门缓存
      */
-    private DeptCache initDeptCache() {
+    @Override
+    public void initDeptCache() {
         DeptCache cache = DEPT_CACHE.get();
         if (cache == null) {
             long start = System.currentTimeMillis();
@@ -168,13 +169,13 @@ public class AccuracyStatisticsServiceImpl implements IAccuracyStatisticsService
             DEPT_CACHE.set(cache);
             log.info("initDeptCache: loaded {} depts in {}ms", allDepts.size(), System.currentTimeMillis() - start);
         }
-        return cache;
     }
 
     /**
      * 清理缓存
      */
-    private void clearDeptCache() {
+    @Override
+    public void clearDeptCache() {
         DEPT_CACHE.remove();
     }
 
@@ -1253,7 +1254,8 @@ public class AccuracyStatisticsServiceImpl implements IAccuracyStatisticsService
             result.setName(sysUser.getNickName());
             result.setType(HomePageQueryEnum.USER.getCode());
         } else {
-            SysDept sysDept = deptService.selectDeptById(dto.getDeptId());
+            DeptCache cache = getDeptCache();
+            SysDept sysDept = cache != null ? cache.deptMap.get(dto.getDeptId()) : deptService.selectDeptById(dto.getDeptId());
             if (ObjectUtil.isNull(sysDept)) {
                 throw new ServiceException("【" + dto.getDeptId() + "】部门不存在");
             }
@@ -1332,12 +1334,13 @@ public class AccuracyStatisticsServiceImpl implements IAccuracyStatisticsService
             }
         } else if (ObjectUtil.isNotNull(dto.getDeptId())) {
             // 部门维度：获取部门下所有用户的正确率
-            SysDept sysDept = deptService.selectDeptById(dto.getDeptId());
+            DeptCache cache = getDeptCache();
+            SysDept sysDept = cache != null ? cache.deptMap.get(dto.getDeptId()) : deptService.selectDeptById(dto.getDeptId());
             if (sysDept == null) {
                 return result;
             }
 
-            DeptHierarchy hierarchy = getDeptHierarchy(dto.getDeptId());
+            DeptHierarchy hierarchy = getDeptHierarchyCached(dto.getDeptId());
             List<Long> teamIds = getTeamIdsUnderDept(dto.getDeptId(), hierarchy);
 
             if (teamIds.isEmpty()) {