FastAPI上的事件处理程序

from fastapi import FastAPI

app = FastAPI()

@app.get("/users/{user_id}")
def get_user(user_id: int):
    # 处理获取用户信息的逻辑
    return {"user_id": user_id, "name": "John Doe"}

from fastapi import FastAPI
from databases import Database

app = FastAPI()
database = Database("sqlite:///./database.db")

@app.on_event("startup")
async def startup():
    await database.connect()

@app.on_event("shutdown")
async def shutdown():
    await database.disconnect()

@app.get("/users/{user_id}")
async def get_user(user_id: int):
    query = "SELECT * FROM users WHERE id = :user_id"
    user = await database.fetch_one(query=query, values={"user_id": user_id})
    return user

from fastapi import FastAPI
from apscheduler.schedulers.background import BackgroundScheduler

app = FastAPI()
scheduler = BackgroundScheduler()

def cleanup_data():
    # 执行数据清理操作
    pass

@app.on_event("startup")
def startup():
    scheduler.add_job(cleanup_data, "interval", days=1)
    scheduler.start()

@app.on_event("shutdown")
def shutdown():
    scheduler.shutdown()