From d4da257eb95879de24682a4470490450bcf6d9ee Mon Sep 17 00:00:00 2001
From: liyj <1617420630@qq.com>
Date: Mon, 28 Apr 2025 11:23:10 +0800
Subject: [PATCH] =?UTF-8?q?fix:=E6=96=87=E4=BB=B6=E4=B8=8A=E4=BC=A0?=
 =?UTF-8?q?=E5=90=8E=E7=BC=80=E4=B8=8D=E6=94=AF=E6=8C=81=E5=A4=A7=E5=86=99?=
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---
 .../suisung/mall/admin/oss/service/impl/OssServiceImpl.java    | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mall-admin/src/main/java/com/suisung/mall/admin/oss/service/impl/OssServiceImpl.java b/mall-admin/src/main/java/com/suisung/mall/admin/oss/service/impl/OssServiceImpl.java
index a15b4e0b..a7fa5262 100644
--- a/mall-admin/src/main/java/com/suisung/mall/admin/oss/service/impl/OssServiceImpl.java
+++ b/mall-admin/src/main/java/com/suisung/mall/admin/oss/service/impl/OssServiceImpl.java
@@ -105,7 +105,8 @@ public class OssServiceImpl implements OssService {
         // 根据用户获取目录名
         String dir = getUserDirName(user) + DateUtil.format(new Date(), "yyyyMMdd");
         // 创建唯一文件名称
-        String suffix = fileName.substring(fileName.lastIndexOf("."));
+        assert fileName != null;
+        String suffix = fileName.substring(fileName.lastIndexOf(".")).toLowerCase();
         String uploadName = IdUtil.simpleUUID() + suffix;
         String uploadPath = FILEPATH + "/" + dir + "/" + uploadName;