16.FastAPI session

16.FastAPI session 16.FastAPI session

在FastAPI中，要使用session，实际上是使用Starlette Session，Starlette Session是作为一个中间件存在的，所以需要安装Starlette Session。执行命令：

pip install starlette-session 

16.1使用Redis作为session存储

代码如下：

from fastapi import FastAPI
from redis import Redis
from starlette_session import SessionMiddleware
from starlette_session.backends import BackendType
​
app = FastAPI()
​
redis_client = Redis(host="127.0.0.1", port=6379, password="xxxxxx")
​
app.add_middleware(
    SessionMiddleware,
    secret_key="secret",
    cookie_name="cookie22",
    backend_type=BackendType.redis,
    backend_client=redis_client
)

16.2使用Redis Cluster作为session存储

代码如下：

from fastapi import FastAPI
from rediscluster import RedisCluster
from starlette_session import SessionMiddleware
from starlette_session.backends import BackendType
​
app = FastAPI()
​
redis_client = RedisCluster(host="127.0.0.1", port=6381, password="xxxxxx")
​
app.add_middleware(
    SessionMiddleware,
    secret_key="secret",
    cookie_name="cookie22",
    backend_type=BackendType.redis,
    backend_client=redis_client
)

16.3 *** 作session

在FastAPI中， *** 作session可以通过request对象直接进行 *** 作，假设对象名为request，则：

request.session.update()

设置session，参数为字典

request.session.clear()

清除session

request.session

读取session

代码如下：

from fastapi import FastAPI
from fastapi import Request
from rediscluster import RedisCluster
from starlette_session import SessionMiddleware
from starlette_session.backends import BackendType
​
app = FastAPI()
​
redis_client = RedisCluster(host="127.0.0.1", port=6381, password="jane10181010")
​
app.add_middleware(
    SessionMiddleware,
    secret_key="secret",
    cookie_name="cookie22",
    backend_type=BackendType.redis,
    backend_client=redis_client
)
​
@app.get(path='/set')
async def set(request: Request):
    request.session.update({"uid": "10181010"})
    return {'res': True}
​
@app.get(path='/cls')
async def cls(request: Request):
    request.session.clear()
    return {'res': True}
​
@app.get(path='/get')
async def get(request: Request):
    return {'session': request.session}

执行请求：

curl http://127.0.0.1:8000/set -i
HTTP/1.1 200 OK
date: Tue, 18 Jan 2022 02:20:00 GMT
server: uvicorn
content-length: 12
content-type: application/json
set-cookie: cookie22=eyJfY3NzaWQiOiAiOGExMDJiM2UtZjJiNS00ZmVmLWJhZWEtYWM5YjI4ZWQ1N2JlIn0=.YeYj0Q.UCFZKi3jalMw0SknLsmM_RYpSj0; Path=/; Max-Age=1209600; httponly; samesite=lax
​
{"res":true}
​
curl http://127.0.0.1:8000/get --cookie "cookie22=eyJfY3NzaWQiOiAiOGExMDJiM2UtZjJiNS00ZmVmLWJhZWEtYWM5YjI4ZWQ1N2JlIn0=.YeYj0Q.UCFZKi3jalMw0SknLsmM_RYpSj0; Path=/; Max-Age=1209600; httponly; samesite=lax" -i
HTTP/1.1 200 OK
date: Tue, 18 Jan 2022 02:20:26 GMT
server: uvicorn
content-length: 30
content-type: application/json
set-cookie: cookie22=eyJfY3NzaWQiOiAiOGExMDJiM2UtZjJiNS00ZmVmLWJhZWEtYWM5YjI4ZWQ1N2JlIn0=.YeYj6w.H2gL6V-BTq4ePB9gaTg-3fAt5r0; Path=/; Max-Age=1209600; httponly; samesite=lax
​
{"session":{"uid":"10181010"}}
​
curl http://127.0.0.1:8000/cls --cookie "cookie22=eyJfY3NzaWQiOiAiOGExMDJiM2UtZjJiNS00ZmVmLWJhZWEtYWM5YjI4ZWQ1N2JlIn0=.YeYj0Q.UCFZKi3jalMw0SknLsmM_RYpSj0; Path=/; Max-Age=1209600; httponly; samesite=lax" -i
HTTP/1.1 200 OK
date: Tue, 18 Jan 2022 02:20:48 GMT
server: uvicorn
content-length: 12
content-type: application/json
set-cookie: cookie22=null; Path=/; Expires=Thu, 01 Jan 1970 00:00:00 GMT; Max-Age=0; httponly; samesite=lax
​
{"res":true}
​
curl http://127.0.0.1:8000/get --cookie "cookie22=eyJfY3NzaWQiOiAiOGExMDJiM2UtZjJiNS00ZmVmLWJhZWEtYWM5YjI4ZWQ1N2JlIn0=.YeYj0Q.UCFZKi3jalMw0SknLsmM_RYpSj0; Path=/; Max-Age=1209600; httponly; samesite=lax" -i
HTTP/1.1 200 OK
date: Tue, 18 Jan 2022 02:20:53 GMT
server: uvicorn
content-length: 16
content-type: application/json
set-cookie: cookie22=null; Path=/; Expires=Thu, 01 Jan 1970 00:00:00 GMT; Max-Age=0; httponly; samesite=lax
​
{"session":null}