修复除数为零的问题

src/main/java/com/diagbot/aggregate/MrStatisticsAggregate.java

@@ -118,6 +118,9 @@ public class MrStatisticsAggregate {
         BeanUtil.copyProperties(filterVO, qcresultFilterVO);
 
         int totleNum = qcresultInfoFacade.resultCount(qcresultFilterVO);
+        if (totleNum == 0){
+            return retList;
+        }
         qcresultFilterVO.setLevel("甲");
         int firstLevelNum = qcresultInfoFacade.resultCount(qcresultFilterVO);
         qcresultFilterVO.setLevel("乙");