15.FastAPI Cookies

15.1通过Cookie参数获取数据

在FastAPI中，Cookie可以像Path、Query一样声明参数类型，使用方法也是一样的。代码如下：

from fastapi import FastAPI
from fastapi import Cookie
​
app = FastAPI()
​
@app.get(path='/test')
async def hello(uid: str = Cookie(None)):
    print(uid)
    return {'hello': 'world'}

执行请求：

curl http://127.0.0.1:8000/test --cookie "uid=10181010"
{"hello":"world"}

后台print输出：

10181010
INFO:     127.0.0.1:57516 - "GET /test HTTP/1.1" 200 OK

可以看出在代码中uid的值为请求时cookie的内容。

15.2通过Response响应Cookie

15.2.1使用Response参数

Response对象的set_cookie()方法可用于设置Cookie，代码如下：

from fastapi import FastAPI
from fastapi import Response
​
app = FastAPI()
​
@app.get(path='/test')
async def hello(response: Response):
    response.set_cookie(key="uid", value="10181010", httponly=True)
    return {'hello': 'world'}

执行请求：

curl http://127.0.0.1:8000/test -i
HTTP/1.1 200 OK
date: Tue, 18 Jan 2022 01:21:09 GMT
server: uvicorn
content-length: 17
content-type: application/json
set-cookie: uid=10181010; HttpOnly; Path=/; SameSite=lax
​
{"hello":"world"}

15.2.2直接返回Response

from fastapi import FastAPI
from fastapi.responses import JSONResponse
​
app = FastAPI()
​
@app.get(path='/test')
async def hello():
    data = {'hello': 'world'}
    response = JSONResponse(content=data)
    response.set_cookie(key="uid", value="10181010", httponly=True)
    return response

执行请求：

curl http://127.0.0.1:8000/test -i
HTTP/1.1 200 OK
date: Tue, 18 Jan 2022 01:25:39 GMT
server: uvicorn
content-length: 17
content-type: application/json
set-cookie: uid=10181010; HttpOnly; Path=/; SameSite=lax
​
{"hello":"world"}