@app.route("/login")

def login():

    # 使用url_for函数通过视图函数的名字找到url路径

    url = url_for("index")

    return redirect(url)

@app.route("/")

def index():

    resp = make_response("set cookie is ok")

    # 设置cookie

    resp.set_cookie("name", "yy")

    # 通过max_age设置过期时间，单位秒

    resp.set_cookie("age", "", max_age=3600)

    return resp

@app.route("/cookie")

def cookie():

    # 获取cookie

    name = request.cookies.get("name")

    return name

@app.route("/delete")

def delete_cookie():

    resp = make_response("delete ok")

    # 删除cookie

    resp.delete_cookie("name")

    return resp

# flask中的session会用到的密钥字符串

app.config['SECRET_KEY'] = os.urandom(24)

# 默认session过期时间为30天，下面代码设置为5小时过期

app.config['PERMANENT_SESSION_LIFETIME'] = timedelta(hours=5)

@app.route("/login")

def login():

    # 设置session

    session["username"] = "yy"

    session["password"] = "admin"

    session["data"] = {"a": 1, "b": 2}

    return redirect(url_for("index"))

@app.route("/index")

def index():

    data = session.get("data")

    if data is None:

        return "None"

    return str(data)

@app.route("/delete")

def delete():

    # 删除session

    # del session['username']

    session.clear()

    return "ok"