From 863d64b53ab589524b5817df3819497ab85e15cf Mon Sep 17 00:00:00 2001
From: jiangyong <jiangyong@batiao8.com>
Date: Fri, 13 Mar 2026 12:02:01 +0800
Subject: [PATCH] storage

---
 storage/minio.go | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/storage/minio.go b/storage/minio.go
index 3ce9d83..21adf50 100644
--- a/storage/minio.go
+++ b/storage/minio.go
@@ -169,10 +169,11 @@ func (s *Minio) Fetch(urlStr, objectName string) error {
 
 	// 获取文件名和 Content-Type
 	objectName = strings.TrimLeft(objectName, "/ ")
-	contentType := resp.Header.Get("Content-Type")
+	// 优先根据文件扩展名推断 Content-Type，确保图片能正确预览
+	ext := strings.TrimLeft(path.Ext(objectName), ".")
+	contentType := ext2ContentType(ext)
 	if contentType == "" {
-		ext := strings.TrimLeft(path.Ext(objectName), ".")
-		contentType = ext2ContentType(ext)
+		contentType = resp.Header.Get("Content-Type")
 	}
 
 	// 上传到 MinIO