重构第一版：重新验证2.0推荐写法

router/features/session_async.py

@@ -0,0 +1,28 @@
+from sqlalchemy import Column, Integer
+
+from sqlalchemy.ext.asyncio import create_async_engine, async_sessionmaker, AsyncSession
+from sqlalchemy.orm import sessionmaker,declarative_base,DeclarativeBase
+
+from fastapi import APIRouter, Depends
+from debug.orm_app.sqlalchemy_full_app import User
+
+
+route = APIRouter(prefix="/session",tags=["session"])
+
+db_url = "mysql+aiomysql://geeker:geeker@localhost:3306/fastapi_tutor?charset=utf8mb4"
+
+engine = create_async_engine(db_url)
+async_session = async_sessionmaker(engine, expire_on_commit=False)
+
+
+async def get_db() -> AsyncSession:
+    async with async_session() as session:
+        yield session
+
+
+@route.get("/")
+async def index(session: AsyncSession = Depends(get_db)):
+    u1 = User(username='test session')
+    session.add(u1)
+    await session.commit()
+