diff --git a/sample/ZipFilePreviewDemo.php b/sample/ZipFilePreviewDemo.php
index 7c539e1..2b0c7a9 100644
--- a/sample/ZipFilePreviewDemo.php
+++ b/sample/ZipFilePreviewDemo.php
@@ -27,4 +27,4 @@
 } catch (\Exception $e) {
     // 请求失败
     echo($e);
-}
\ No newline at end of file
+}