fix：优化下载

app/modules/filemanager/storages/alipan.py

@@ -14,6 +14,7 @@ from app.log import logger
 from app.modules.filemanager import StorageBase
 from app.modules.filemanager.storages import transfer_process
 from app.schemas.types import StorageSchema
+from app.utils.http import RequestUtils
 from app.utils.singleton import WeakSingleton
 from app.utils.string import StringUtils
 
@@ -729,7 +730,25 @@ class AliPan(StorageBase, metaclass=WeakSingleton):
         progress_callback = transfer_process(Path(fileitem.path).as_posix())
 
         try:
-            with requests.get(download_url, stream=True) as r:
+            # 构建请求头，包含必要的认证信息
+            headers = {
+                "User-Agent": settings.NORMAL_USER_AGENT,
+                "Referer": "https://www.aliyundrive.com/",
+                "Accept": "*/*",
+                "Accept-Language": "zh-CN,zh;q=0.9,en;q=0.8",
+                "Accept-Encoding": "gzip, deflate, br",
+                "Connection": "keep-alive",
+                "Sec-Fetch-Dest": "empty",
+                "Sec-Fetch-Mode": "cors",
+                "Sec-Fetch-Site": "cross-site"
+            }
+
+            # 如果有access_token，添加到请求头
+            if self.access_token:
+                headers["Authorization"] = f"Bearer {self.access_token}"
+
+            request_utils = RequestUtils(headers=headers)
+            with request_utils.get_stream(download_url, raise_exception=True) as r:
                 r.raise_for_status()
                 downloaded_size = 0
                 with open(local_path, "wb") as f:
@@ -748,22 +767,13 @@ class AliPan(StorageBase, metaclass=WeakSingleton):
                 # 完成下载
                 progress_callback(100)
                 logger.info(f"【阿里云盘】下载完成: {fileitem.name}")
-
-        except requests.exceptions.RequestException as e:
-            logger.error(f"【阿里云盘】下载网络错误: {fileitem.name} - {str(e)}")
-            # 删除可能部分下载的文件
-            if local_path.exists():
-                local_path.unlink()
-            return None
+                return local_path
         except Exception as e:
             logger.error(f"【阿里云盘】下载失败: {fileitem.name} - {str(e)}")
-            # 删除可能部分下载的文件
             if local_path.exists():
                 local_path.unlink()
             return None
 
-        return local_path
-
     def check(self) -> bool:
         return self.access_token is not None