fix attributes = nil bug

c7ec5c3d · zhanrongzhen · d5c4dd2a · c7ec5c3d
--- a/nginx.conf
+++ b/nginx.conf
@@ -112,8 +112,19 @@ http {
                    ngx.say("<html><body><h1>404 - File Not Found</h1><p>The requested file does not exist.</p></body></html>")
                    return ngx.exit(ngx.HTTP_NOT_FOUND)
                end
-
-
+                if not attributes then
+                    -- 缓存命中但attributes未设置，需重新获取文件属性
+                    attributes, err = lfs.attributes(filepath)
+                    if not attributes then
+                        -- 文件可能已被删除，清除缓存并返回404
+                        cache:delete(key)
+                        ngx.log(ngx.WARN, "File cached as existing but not found: ", filepath)
+                        ngx.header["Content-Type"] = "text/html; charset=utf-8"
+                        ngx.status = ngx.HTTP_NOT_FOUND
+                        ngx.say("<html><body><h1>404 - File Not Found</h1><p>The requested file does not exist.</p></body></html>")
+                        return ngx.exit(ngx.HTTP_NOT_FOUND)
+                    end
+                end
                -- 判断是否有扩展名
                local ext = string.match(filename, "%.([^%.]+)$")
                local mime_type