update

@@ -36,14 +36,26 @@ protected function error($message = 'error', $status = 400, $data = [])
         return json_encode($array, JSON_UNESCAPED_UNICODE);
     }
 
+    /**
+     * pdf文件添加二维码
+     * @param Request $request
+     * @return string
+     * @throws \setasign\Fpdi\PdfParser\CrossReference\CrossReferenceException
+     * @throws \setasign\Fpdi\PdfParser\Filter\FilterException
+     * @throws \setasign\Fpdi\PdfParser\PdfParserException
+     * @throws \setasign\Fpdi\PdfParser\Type\PdfTypeException
+     * @throws \setasign\Fpdi\PdfReader\PdfReaderException
+     * @author Akun
+     * @date 2026/03/04 10:43
+     */
     public function addQrToPdf(Request $request)
     {
         $sourceFile = $request->input('original_pdf');
         if (empty($sourceFile)) {
-            return $this->error('原始pdf未传参');
+            return $this->error('原始pdf地址未知');
         }
         if (!file_exists($sourceFile)) {
-            return $this->error('原始pdf不存在');
+            return $this->error('原始pdf文件不存在');
         }
         $qrText = $request->input('qr_text');
         if (empty($qrText)) {