Flask Cookie和Session的使用

def set_cookie(
        self,
        key,
        value="",
        max_age=None,	
        expires=None,
        path="/",
        domain=None,
        secure=False,
        httponly=False,
        samesite=None,
    ):

from flask import Flask, make_response, request

app = Flask(__name__)


# 设置Cookie
@app.route("/set_cookie")
def set_cookie():
    resp = make_response('success')

    resp.set_cookie("name", "hui")
    resp.set_cookie("age", "21")

    return resp

# 获取Cookie
@app.route("/get_cookie")
def get_cookie():
    name = request.cookies.get("name")
    age = request.cookies.get("age")

    resp = f"name={name}, age={age}"
    return resp


if __name__ == "__main__":
    app.run()

from datetime import datetime, timedelta
from flask import Flask, make_response, request

app = Flask(__name__)


@app.route("/set_expires")
def set_cookie_expires():
    resp = make_response("设置cookie过期时间")

    # 设置1分钟后过期
    resp.set_cookie("sex", "male", max_age=60)

    # 设置一天后过期
    expires_date = datetime.now() + timedelta(days=1, hours=-8)
    resp.set_cookie("city", "GanZhou", expires=expires_date)

    return resp

from flask import Flask, make_response

app = Flask(__name__)


@app.route("/del_cookie")
def del_cookie():
    resp = make_response("del cookie")
    resp.delete_cookie("name")
    return resp

    def delete_cookie(self, key, path="/", domain=None):
        """Delete a cookie.  Fails silently if key doesn't exist.

        :param key: the key (name) of the cookie to be deleted.
        :param path: if the cookie that should be deleted was limited to a
                     path, the path has to be defined here.
        :param domain: if the cookie that should be deleted was limited to a
                       domain, that domain has to be defined here.
        """
        self.set_cookie(key, expires=0, max_age=0, path=path, domain=domain)

"""
Author: Hui
Desc: { Flask session的使用 }
"""
from flask import Flask, session

app = Flask(__name__)
app.config["SECRET_KEY"] = "it hui"


# flask默认吧session保存在cookie中
@app.route("/index")
def index():
    name = session.get("name")
    return "hello {}".format(name)


@app.route("/login")
def login():
    session["name"] = "hui"
    return "set session name"


if __name__ == "__main__":
    app.run()

app.SECRECT_KEY = "it hui"

RuntimeError: The session is unavailable because no secret key was set.  Set the secret_key on the application to something unique and secret.

#: This attribute can also be configured from the config with the
    #: ``PERMANENT_SESSION_LIFETIME`` configuration key.  Defaults to
    #: ``timedelta(days=31)``
    permanent_session_lifetime = ConfigAttribute(
        "PERMANENT_SESSION_LIFETIME", get_converter=_make_timedelta
    )

"""
Author: Hui
Desc: { Flask session的使用 }
"""
from datetime import timedelta
from flask import Flask, session

app = Flask(__name__)
app.config["SECRET_KEY"] = "it hui"

# 设置session过期时间
app.permanent_session_lifetime = timedelta(seconds=60)


# flask默认把session保存在cookie中
@app.route("/index")
def index():
    name = session.get("name")
    age = session.get("age")
    return f"name={name}, age={age}"


@app.route("/age")
def set_session():
    session["age"] = 21
    return "set session age"


@app.route("/login")
def login():
    session["name"] = "hui"
    session.permanent = True
    return "set session name"


if __name__ == "__main__":
    app.run()

app.permanent_session_lifetime = timedelta(seconds=60)

@app.route("del_session")
def del_session():
    session.pop("name")
    # session.clear() # 删除session所有信息
    return "del session name"