from fastapi import FastAPI
from pydantic import BaseModel
app = FastAPI()

# 定义请求体模型
class UserRequest(BaseModel):
    username:str
    passwd:str

class UserResponse(BaseModel):
    code:int = 200
    detail:str = 'ok'
    totals:int = 0
    username:str

@app.post('/userinfo',response_model=UserResponse)
def adduser(u:UserRequest):
    # return UserResponse(username=u.username)
    return u  # 等价于 return UserResponse(username=u.username)

'''
@app.post('/userinfo',response_model=UserResponse)
def adduser(u:list[UserRequest]):
    user = [i.username for i in u]
    return UserResponse(code = 405,totals=len(u),username=user)
    # return u  # 等价于 return UserResponse(username=u.username)
'''