'update

main.py

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+from fastapi import FastAPI, HTTPException, Depends
+from sqlalchemy.orm import Session
+# from . import models, schemas, crud
+import models
+import schemas
+import crud
+
+# from .database import SessionLocal, engine
+from database import SessionLocal, engine
+
+
+# 创建数据库表
+models.Base.metadata.create_all(bind=engine)
+
+app = FastAPI()
+
+# 依赖项，用于获取数据库会话
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+# 创建新的城市天气记录
+@app.post("/city_weather/", response_model=schemas.CityWeather)
+def create_city_weather(city_weather: schemas.CityWeatherCreate, db: Session = Depends(get_db)):
+    db_city = crud.get_city_weather_by_name(db, city_name=city_weather.city_name)
+    if db_city:
+        raise HTTPException(status_code=400, detail="City already registered")
+    return crud.create_city_weather(db=db, city_weather=city_weather)
+
+# 获取城市天气记录
+@app.get("/city_weather/{city_id}", response_model=schemas.CityWeather)
+def read_city_weather(city_id: int, db: Session = Depends(get_db)):
+    db_city_weather = crud.get_city_weather(db, city_id=city_id)
+    if db_city_weather is None:
+        raise HTTPException(status_code=404, detail="City not found")
+    return db_city_weather
+
+# 获取多个城市天气记录
+@app.get("/city_weather/", response_model=list[schemas.CityWeather])
+def read_city_weathers(skip: int = 0, limit: int = 10, db: Session = Depends(get_db)):
+    cities = crud.get_city_weathers(db, skip=skip, limit=limit)
+    return cities
+
+# 更新城市天气记录
+@app.put("/city_weather/{city_id}", response_model=schemas.CityWeather)
+def update_city_weather(city_id: int, city_weather: schemas.CityWeatherCreate, db: Session = Depends(get_db)):
+    db_city = crud.update_city_weather(db=db, city_id=city_id, city_weather=city_weather)
+    if db_city is None:
+        raise HTTPException(status_code=404, detail="City not found")
+    return db_city
+
+# 删除城市天气记录
+@app.delete("/city_weather/{city_id}", response_model=schemas.CityWeather)
+def delete_city_weather(city_id: int, db: Session = Depends(get_db)):
+    db_city = crud.delete_city_weather(db=db, city_id=city_id)
+    if db_city is None:
+        raise HTTPException(status_code=404, detail="City not found")
+    return db_city