main.py

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from typing import Optional
from models import db, User

app = FastAPI()

# 设置跨域允许
origins = [
    "http://localhost:8080",
]

app.add_middleware(
    CORSMiddleware,
    allow_origins=origins,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Optional[str] = None):
    return {"item_id": item_id, "q": q}


@app.get('/users')
async def list_users():
    users = []
    for user in db.users.find():
        users.append(User(**user))
    return {'users': users}


@app.post('/users')
async def create_user(user: User):
    if hasattr(user, 'id'):
        delattr(user, 'id')
    ret = db.users.insert_one(user.dict(by_alias=True))
    user.id = ret.inserted_id
    return {'user': user}