diff --git a/src/main/java/com/bsd/cases/util/OSSClientUtil.java b/src/main/java/com/bsd/cases/util/OSSClientUtil.java
index c81ba6b..896448e 100644
--- a/src/main/java/com/bsd/cases/util/OSSClientUtil.java
+++ b/src/main/java/com/bsd/cases/util/OSSClientUtil.java
@@ -76,10 +76,18 @@ public class OSSClientUtil {
         if (file.getSize() > 10 * 1024 * 1024) {
             throw new Exception("上传图片大小不能超过10M！");
         }
+        //文件名称
         String originalFilename = file.getOriginalFilename();
-//        String substring = originalFilename.substring(originalFilename.lastIndexOf(".")).toLowerCase();
+
+        //文件前缀
+        String timestamp = String.valueOf(new Date().getTime());
+        String fileName = originalFilename.substring(0,originalFilename.indexOf(".")) + timestamp;
+
+        //文件后缀
+        String suffix = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
 //        Random random = new Random();
-        String name = originalFilename;
+
+        String name = fileName +"."+ suffix;
         try {
             InputStream inputStream = file.getInputStream();
             this.uploadFile2OSS(inputStream, name,filedir);