FastAPI 'put‘和'patch’方法不起作用，出现错误500

from fastapi import FastAPI

app = FastAPI()

@app.put("/items/{item_id}")
async def update_item(item_id: int, item: Item):
    return {"item_id": item_id, "item": item}

@app.patch("/items/{item_id}")
async def partial_update_item(item_id: int, item: Item):
    return {"item_id": item_id, "item": item}

from pydantic import BaseModel

class Item(BaseModel):
    name: str
    description: str = None
    price: float
    tax: float = None

from fastapi import Depends

async def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()

@app.put("/items/{item_id}")
async def update_item(item_id: int, item: Item, db: Session = Depends(get_db)):
    # 数据库操作
    pass

uvicorn your_module_name:app --reload

from fastapi import HTTPException

@app.put("/items/{item_id}")
async def update_item(item_id: int, item: Item):
    try:
        # 更新逻辑
        pass
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))