From 6770bae66a1822f9603948d4e4ca33bb809dd339 Mon Sep 17 00:00:00 2001
From: jiangyong <jiangyong@batiao8.com>
Date: Mon, 16 Mar 2026 12:27:51 +0800
Subject: [PATCH] content-type

---
 storage/util.go | 92 ++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 87 insertions(+), 5 deletions(-)

diff --git a/storage/util.go b/storage/util.go
index de9ad2c..c749723 100644
--- a/storage/util.go
+++ b/storage/util.go
@@ -21,16 +21,98 @@ func contentType2Ext(contentType string) string {
 
 func ext2ContentType(ext string) string {
 	ext = strings.ToLower(ext)
-	if ext == "jpg" || ext == "jpeg" {
+	switch ext {
+	// 图片格式
+	case "jpg", "jpeg":
 		return "image/jpeg"
-	} else if ext == "png" {
+	case "png":
 		return "image/png"
-	} else if ext == "mp3" {
+	case "gif":
+		return "image/gif"
+	case "webp":
+		return "image/webp"
+	case "bmp":
+		return "image/bmp"
+	case "svg", "svgz":
+		return "image/svg+xml"
+	case "ico":
+		return "image/x-icon"
+	case "tiff", "tif":
+		return "image/tiff"
+	case "avif":
+		return "image/avif"
+	case "apng":
+		return "image/apng"
+	// 音频格式
+	case "mp3":
 		return "audio/mpeg"
-	} else if ext == "mp4" {
+	case "wav":
+		return "audio/wav"
+	case "ogg":
+		return "audio/ogg"
+	case "flac":
+		return "audio/flac"
+	case "aac":
+		return "audio/aac"
+	case "m4a":
+		return "audio/mp4"
+	// 视频格式
+	case "mp4":
 		return "video/mp4"
+	case "avi":
+		return "video/x-msvideo"
+	case "mov", "qt":
+		return "video/quicktime"
+	case "webm":
+		return "video/webm"
+	case "flv":
+		return "video/x-flv"
+	case "mkv":
+		return "video/x-matroska"
+	case "wmv":
+		return "video/x-ms-wmv"
+	case "m3u8":
+		return "application/vnd.apple.mpegurl"
+	case "ts":
+		return "video/mp2t"
+	// 文档格式
+	case "pdf":
+		return "application/pdf"
+	case "doc":
+		return "application/msword"
+	case "docx":
+		return "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
+	case "xls":
+		return "application/vnd.ms-excel"
+	case "xlsx":
+		return "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
+	case "ppt":
+		return "application/vnd.ms-powerpoint"
+	case "pptx":
+		return "application/vnd.openxmlformats-officedocument.presentationml.presentation"
+	case "txt":
+		return "text/plain"
+	case "html", "htm":
+		return "text/html"
+	case "css":
+		return "text/css"
+	case "js":
+		return "application/javascript"
+	case "json":
+		return "application/json"
+	case "xml":
+		return "application/xml"
+	case "zip":
+		return "application/zip"
+	case "rar":
+		return "application/x-rar-compressed"
+	case "7z":
+		return "application/x-7z-compressed"
+	case "gz":
+		return "application/gzip"
+	default:
+		return ""
 	}
-	return ""
 }
 
 func Download(url, path string) error {