feat: 添加图片 Content-Type 支持 (png/jpg/gif/svg/webp)

src/handlers/static_files.rs

@@ -12,6 +12,11 @@ pub async fn serve_static_files(path: web::Path<String>) -> impl Responder {
         Some(file) => {
             let content_type = match file_path.split('.').next_back() {
                 Some("ico") => "image/x-icon",
+                Some("png") => "image/png",
+                Some("jpg") | Some("jpeg") => "image/jpeg",
+                Some("gif") => "image/gif",
+                Some("svg") => "image/svg+xml",
+                Some("webp") => "image/webp",
                 Some("css") => "text/css",
                 Some("js") => "application/javascript",
                 Some("html") => "text/html",