fix: 修复本地文件无法上传的问题；修复秒传错误的问题。

iti/applications/common/storage/local.py

@@ -23,6 +23,8 @@ class LocalStorage(StorageInterface):
 
     def upload(self, file_stream: BinaryIO, key: str, mime_type: Optional[str] = None) -> Dict:
         """上传文件到本地"""
+        # 本地文件存储需要移除前缀
+        key = key.lstrip(self.storage_type + ":")
         abs_path = self._abs_path(key)
         os.makedirs(os.path.dirname(abs_path), exist_ok=True)
         

iti/applications/service/sys_file.py

@@ -7,7 +7,7 @@ from io import BytesIO
 from typing import Dict, Optional
 
 from flask import current_app, url_for
-from sqlalchemy import select
+from sqlalchemy import select, exists
 
 from iti.applications.common.enums import StatusEnum
 from iti.applications.common.exceptions.biz_exp import BizException
@@ -40,9 +40,12 @@ class SysFileService:
         resolved_storage_type = cls._resolve_storage_type(storage_type, directory_id)
 
         existing = db.session.scalar(
-            select(SysFile)
+            select(
-            .filter_by(file_hash=file_hash, status=StatusEnum.ENABLED.value)
+                exists(SysFile).where(
-            .limit(1)
+                    SysFile.file_hash == file_hash,
+                    SysFile.status == StatusEnum.ENABLED.value,
+                )
+            )
         )
         if existing and existing.storage_type == resolved_storage_type:
             # 秒传：更新已有记录
@@ -56,7 +59,9 @@ class SysFileService:
         ext = os.path.splitext(file.filename or "")[1]
         # 为支持多存储类型，前缀加上存储类型，使用冒号分隔，避免唯一索引冲突
         file_key = f"{resolved_storage_type}:{datetime.now():%Y%m%d}/{file_hash}{ext}"
-        upload_result = storage.upload(BytesIO(file_bytes), file_key, getattr(file, "mimetype", None))
+        upload_result = storage.upload(
+            BytesIO(file_bytes), file_key, getattr(file, "mimetype", None)
+        )
 
         new_file = SysFile(
             filename=file.filename,
@@ -175,7 +180,9 @@ class SysFileService:
                 file_size=file_size,
                 extension=os.path.splitext(upload_data.get("filename") or "")[1],
                 storage_type=storage_type,
-                storage_info=upload_data.get("storage_info") if storage_type != "local" else None,
+                storage_info=upload_data.get("storage_info")
+                if storage_type != "local"
+                else None,
                 directory_id=upload_data.get("directory_id"),
                 metadata_=metadata if metadata else None,
                 status=StatusEnum.ENABLED.value,
@@ -250,7 +257,9 @@ class SysFileService:
         return storage.get_preview_url(file_obj.file_key, expires=3600)
 
     @classmethod
-    def get_thumbnail_url(cls, file_id: str, width: int = 200, height: int = 200, mode: str = "fit") -> Optional[str]:
+    def get_thumbnail_url(
+        cls, file_id: str, width: int = 200, height: int = 200, mode: str = "fit"
+    ) -> Optional[str]:
         """获取缩略图URL
 
         - local: 返回后端缩略图路由
@@ -278,31 +287,33 @@ class SysFileService:
         )
 
     @classmethod
-    def get_thumbnail(cls, file_id: str, width: int = 200, height: int = 200, mode: str = "fit") -> BytesIO:
+    def get_thumbnail(
+        cls, file_id: str, width: int = 200, height: int = 200, mode: str = "fit"
+    ) -> BytesIO:
         """生成缩略图"""
         file_obj = cls.get_file_by_id(file_id)
-        
+
         # 非图片类型不支持缩略图
         if not file_obj.mime_type or not file_obj.mime_type.startswith("image/"):
             raise BizException("该文件类型不支持缩略图", code=400)
-        
+
         # OSS 存储：使用 OSS 图片处理
         if file_obj.storage_type != "local":
             # 对于 OSS，直接重定向到带图片处理参数的URL
             # TODO: 各OSS需要实现 get_thumbnail_url 方法
             return cls.download_file(file_id)
-        
+
         # 本地存储：使用 Pillow 生成缩略图
         try:
             from PIL import Image
             from io import BytesIO as PILBytesIO
         except ImportError:
             raise BizException("需要安装 Pillow: pip install Pillow", code=500)
-        
+
         # 下载原图
         file_stream = cls.download_file(file_id)
         img = Image.open(file_stream)
-        
+
         # 转换为 RGB（处理 PNG 透明通道等）
         if img.mode in ("RGBA", "LA", "P"):
             background = Image.new("RGB", img.size, (255, 255, 255))
@@ -312,7 +323,7 @@ class SysFileService:
             img = background
         elif img.mode != "RGB":
             img = img.convert("RGB")
-        
+
         # 根据模式调整大小
         if mode == "fill":
             # 填充模式：裁剪居中
@@ -330,12 +341,12 @@ class SysFileService:
         else:  # fit (默认)
             # 适应模式：保持比例
             img.thumbnail((width, height), Image.Resampling.LANCZOS)
-        
+
         # 保存为 JPEG
         output = PILBytesIO()
         img.save(output, format="JPEG", quality=85, optimize=True)
         output.seek(0)
-        
+
         return output
 
     @classmethod