Merge branch 'zyj-fixbug1023479' into 'master'

fixbug1023479

See merge request rays/pcloud-book!744

pcloud-service-book/src/main/java/com/pcloud/book/group/biz/impl/BookGroupBizImpl.java

@@ -4817,6 +4817,9 @@ public class BookGroupBizImpl implements BookGroupBiz {
         fillBookServe(serveDTOList);
         //移除不能购买的应用或作品
         removeCanNotBuy(serveDTOList);
+        if (ListUtils.isEmpty(serveDTOList)) {
+            return new PageBeanNew<>(0, 1, 0, new ArrayList<>());
+        }
         PageBeanNew<BookServeDTO> pageBeanNew = new PageBeanNew<BookServeDTO>(0, serveDTOList.size(), serveDTOList.size(), serveDTOList);
         pageBeanNew.setPageCount(1);
         return pageBeanNew;