feat：单个文件的upload接口以及save接口

app/model/FileModel.py

@@ -0,0 +1,70 @@
+import datetime
+from pathlib import Path
+
+from fastapi import UploadFile
+from sqlmodel import Field
+
+from app.config.env import env
+from app.model.BasicModel import BasicModel
+from app.utils.create_module_service import create_model_service
+from app.utils.db_utils import AsyncSessionDep
+from app.utils.next_id import next_id
+from app.utils.path_join import path_join
+
+
+class FileModel(BasicModel, table=True):
+  __tablename__ = "pl_upload"
+
+  name: str = Field(default=None, description='文件名称')
+  path: str = Field(default=None, description='文件路径')
+  head_id: str = Field(default=None, description='父对象id')
+  attr1: str = Field(default=None, description='扩展属性1')
+  attr2: str = Field(default=None, description='扩展属性2')
+  attr3: str = Field(default=None, description='扩展属性3')
+
+
+FileService = create_model_service(Cls=FileModel)
+
+
+# 文件保存服务
+class FileSaveService:
+  # 将文件保存到服务本地目录
+  # 并且往附件表中插入对应的文件记录
+  @staticmethod
+  async def saveFile(
+    session: AsyncSessionDep,
+    file: UploadFile,
+    filename: str,
+    id: str = None,
+    file_record: dict = None,
+  ):
+    if not id:
+      id = await next_id()
+
+    datetime_string = datetime.datetime.now().strftime("%Y%m%d%H%M%S")
+    file_id = f"{datetime_string}_{id}"
+
+    save_path = path_join(env.file_save_path, file_id).replace('\\', '/')
+    print("save_path", save_path)
+
+    public_path = path_join(env.file_public_path, file_id).replace('\\', '/')
+    print("public_path", public_path)
+
+    # parents=True 表示创建所有不存在的父目录
+    # exist_ok=True 表示如果目录已存在不抛出异常
+    Path(save_path).mkdir(parents=True, exist_ok=True)
+
+    file_save_path = path_join(save_path, filename)
+    file_public_path = path_join(public_path, filename)
+
+    with open(file_save_path, 'wb') as f:
+      f.write(await file.read())
+
+    file_dict = {
+      "id": id,
+      "name": filename,
+      "path": file_public_path,
+      **file_record,
+    }
+    file_cls = await FileService.item_insert(session=session, row_dict=file_dict)
+    return {"result": file_cls.model_dump()}