新增自动开具处方。修改ca对接

extend/Alibaba/Oss.php

@@ -161,4 +161,18 @@ class Oss
         }
     }
 
+    /**
+     * 判断指定的文件是否存在
+     * @param string $filename
+     * @return bool
+     */
+    public function doesObjectExist(string $filename): bool
+    {
+        try {
+            $ossClient = $this->createClient();
+            return $ossClient->doesObjectExist($this->config['bucket'], $filename);
+        }catch(\Exception $e) {
+            throw new BusinessException($e->getMessage());
+        }
+    }
 }