storage

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")
-	if contentType == "" {
+	// 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)
+	contentType := ext2ContentType(ext)
+	if contentType == "" {
+		contentType = resp.Header.Get("Content-Type")
 	}
 
 	// 上传到 MinIO