vip定制课

cooleshow-user/user-biz/src/main/java/com/yonge/cooleshow/biz/dal/service/impl/VideoLessonGroupServiceImpl.java

@@ -115,15 +115,17 @@ public class VideoLessonGroupServiceImpl extends ServiceImpl<VideoLessonGroupDao
 			}
 		}
         List<VideoLessonGroupVo> videoLessonGroupVos = baseMapper.selectPage(page, query);
-        //获取直播课关联的曲目数量
-        List<Long> videoLessonGroupIds = videoLessonGroupVos.stream().map(VideoLessonGroupVo::getId).collect(Collectors.toList());
-        List<Map<Long,Long>> musicNum = this.baseMapper.countMusicAlbum(videoLessonGroupIds);
-        Map<Long,Long> map = MapUtil.convertIntegerMap(musicNum);
-        for (VideoLessonGroupVo videoLessonGroupVo : videoLessonGroupVos) {
-            if (videoLessonGroupVo.getLessonPrice().compareTo(BigDecimal.ZERO) == 0) {
-                videoLessonGroupVo.setCountStudent(videoLessonGroupVo.getCountStudent() + videoLessonGroupVo.getVirtualNumber());
+        if(CollectionUtils.isNotEmpty(videoLessonGroupVos)){
+            //获取直播课关联的曲目数量
+            List<Long> videoLessonGroupIds = videoLessonGroupVos.stream().map(VideoLessonGroupVo::getId).collect(Collectors.toList());
+            List<Map<Long,Long>> musicNum = this.baseMapper.countMusicAlbum(videoLessonGroupIds);
+            Map<Long,Long> map = MapUtil.convertIntegerMap(musicNum);
+            for (VideoLessonGroupVo videoLessonGroupVo : videoLessonGroupVos) {
+                if (videoLessonGroupVo.getLessonPrice().compareTo(BigDecimal.ZERO) == 0) {
+                    videoLessonGroupVo.setCountStudent(videoLessonGroupVo.getCountStudent() + videoLessonGroupVo.getVirtualNumber());
+                }
+                videoLessonGroupVo.setMusicNum(map.get(videoLessonGroupVo.getId()));
             }
-            videoLessonGroupVo.setMusicNum(map.get(videoLessonGroupVo.getId()));
         }
         return page.setRecords(videoLessonGroupVos);
     }