diff --git a/adc-da-sys/src/main/java/com/adc/da/att/service/impl/AttFileEOServiceImpl.java b/adc-da-sys/src/main/java/com/adc/da/att/service/impl/AttFileEOServiceImpl.java
index 2b261cbb..92fcfc9d 100644
--- a/adc-da-sys/src/main/java/com/adc/da/att/service/impl/AttFileEOServiceImpl.java
+++ b/adc-da-sys/src/main/java/com/adc/da/att/service/impl/AttFileEOServiceImpl.java
@@ -55,8 +55,11 @@ public class AttFileEOServiceImpl extends ServiceImpl<AttFileEODao, AttFileEO> i
             //2020年10月25日 此处补充文件的下载地址
             StringBuffer downloadFileUrl = new StringBuffer();
             // 去除downloadURL末尾的 ’/‘
-            downloadUrl = downloadUrl.substring(0,downloadUrl.length()-1);
-            downloadFileUrl.append(downloadUrl).append(attFileEO.getFilePath()).append(attFileEO.getFileName());
+            String url = downloadUrl;
+            if (url.endsWith("/")) {
+                url = url.substring(0, url.length() - 1);
+            }
+            downloadFileUrl.append(url).append(attFileEO.getFilePath()).append(attFileEO.getFileName());
             attFileEO.setDownLoadUrl(downloadFileUrl.toString());
         }else{
             String fileId = UUIDUtils.randomUUID20();