diff --git a/source/java/src/main/java/com/mindskip/xzs/service/impl/SubjectServiceImpl.java b/source/java/src/main/java/com/mindskip/xzs/service/impl/SubjectServiceImpl.java
index 8a1eba87f0cc485b7a0a9925986f2d621a420449..881017e827860bf66c62c647fb5fa08ac191ab9a 100644
--- a/source/java/src/main/java/com/mindskip/xzs/service/impl/SubjectServiceImpl.java
+++ b/source/java/src/main/java/com/mindskip/xzs/service/impl/SubjectServiceImpl.java
@@ -54,6 +54,8 @@ public class SubjectServiceImpl extends BaseServiceImpl<Subject> implements Subj
 
     @Override
     public PageInfo<Subject> page(SubjectPageRequestVM requestVM) {
+        int i=10/0;
+
         return PageHelper.startPage(requestVM.getPageIndex(), requestVM.getPageSize(), "id desc").doSelectPageInfo(() ->
                 subjectMapper.page(requestVM)
         );