From e5b5a81be81e6d8891a57e79ad8094dcf117aee0 Mon Sep 17 00:00:00 2001
From: maark1106 <mark1106@naver.com>
Date: Sun, 27 Apr 2025 14:33:46 +0900
Subject: [PATCH] =?UTF-8?q?fix:=20=EC=9D=B4=EB=AF=B8=EC=A7=80=20url=20?=
 =?UTF-8?q?=EA=B9=A8=EC=A7=80=EB=8A=94=20=EB=AC=B8=EC=A0=9C=20=EC=88=98?=
 =?UTF-8?q?=EC=A0=95=20(#317)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../buddyya/common/service/S3UploadService.java  | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/team/buddyya/common/service/S3UploadService.java b/src/main/java/com/team/buddyya/common/service/S3UploadService.java
index 75f13285..1987e1c1 100644
--- a/src/main/java/com/team/buddyya/common/service/S3UploadService.java
+++ b/src/main/java/com/team/buddyya/common/service/S3UploadService.java
@@ -20,6 +20,7 @@ public class S3UploadService {
 
     @Value("${cloud.aws.s3.bucket}")
     private String bucketName;
+
     @Value("${cloud.aws.s3.url}")
     private String defaultUrl;
 
@@ -44,8 +45,19 @@ private ObjectMetadata getObjectMetadata(MultipartFile file) {
     }
 
     private String generateFileName(MultipartFile file) {
-        String fileName = UUID.randomUUID().toString() + "-" + file.getOriginalFilename();
-        return fileName.replaceAll("[\\s,]", "_");
+        String extension = getFileExtension(file.getOriginalFilename());
+        return UUID.randomUUID().toString() + (extension.isEmpty() ? "" : "." + extension);
+    }
+
+    private String getFileExtension(String originalName) {
+        if (originalName == null) {
+            return "";
+        }
+        int dotIndex = originalName.lastIndexOf('.');
+        if (dotIndex == -1 || dotIndex == originalName.length() - 1) {
+            return "";
+        }
+        return originalName.substring(dotIndex + 1).toLowerCase();
     }
 
     public void deleteFile(String dir, String fileUrl) {