diff --git a/adc-da-slrs/src/main/java/com/adc/da/slrs/sarBussStandFile/service/impl/SarBussStandFileServiceImpl.java b/adc-da-slrs/src/main/java/com/adc/da/slrs/sarBussStandFile/service/impl/SarBussStandFileServiceImpl.java
index 09aa109e..1334dc43 100644
--- a/adc-da-slrs/src/main/java/com/adc/da/slrs/sarBussStandFile/service/impl/SarBussStandFileServiceImpl.java
+++ b/adc-da-slrs/src/main/java/com/adc/da/slrs/sarBussStandFile/service/impl/SarBussStandFileServiceImpl.java
@@ -216,6 +216,11 @@ public class SarBussStandFileServiceImpl extends ServiceImpl<SarBussStandFileDao
             List<SarBussStandFile> sarBussStandFileList = sarStandFileEODao.selectList(wrapper1);
             sarBussStandFileList.forEach(each -> {
                 String fileName = each.getFileName().replace("/", "").replace("_", "");
+                // 把文件名后缀忽略大小写
+                int dotIndex = fileName.lastIndexOf(".");
+                if (dotIndex!= -1) {
+                    fileName = fileName.substring(0, dotIndex) + fileName.substring(dotIndex).toLowerCase();
+                }
                 each.setFileName(fileName);
             });
             // 使用 HashMap 记录已经出现过的 fileName