FastAPI上传POST多个对象BaseModel数据JSON，python

from typing import Optional

import uvicorn
from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Person(BaseModel):
    name: str
    desc: Optional[str] = None


class User(BaseModel):
    username: str
    age: Optional[int] = 0


@app.post("/item/{item_id}")
async def item(item_id: int, person: Person, user: User):
    results = {"item_id": item_id, "person": person, "user": user}
    return results


if __name__ == '__main__':
    uvicorn.run(app=app, host="0.0.0.0", debug=True)

在postman里面构造多个对应的json数据对象：

如果上传的既有JSON也有其他基本类型时候，比如一个count=10，则需要定义 Body():

from typing import Optional

import uvicorn
from fastapi import FastAPI, Body
from pydantic import BaseModel

app = FastAPI()


class Person(BaseModel):
    name: str
    desc: Optional[str] = None


class User(BaseModel):
    username: str
    age: Optional[int] = 0


@app.post("/item/{item_id}")
async def item(item_id: int, person: Person, user: User, count: int = Body()):
    results = {"item_id": item_id, "person": person, "user": user, "count": count}
    return results


if __name__ == '__main__':
    uvicorn.run(app=app, host="0.0.0.0", debug=True)