Flask的Session

Posted 2021-01-30 st-st

一、session

除请求对象之外，还有一个 session 对象。它允许你在不同请求间存储特定用户的信息。它是在 Cookies 的基础上实现的，并且对 Cookies 进行密钥签名要使用会话，你需要设置一个密钥。

• 设置：session[‘username‘] ＝ ‘xxx‘
• 取值：session.get[‘username‘]
• 删除：session.pop(‘username‘, None)

from flask import Flask
from flask import render_template
from flask import session
from flask import request
from flask import redirect

app = Flask(__name__)

app.config.from_mapping({"SECRET_KEY":"value"})

@app.route("/login",methods=["GET","POST"])
def login():
    if request.method == "POST":
        username = request.form.get("username")
        password = request.form.get("password")
        if username == "xiaoming" and password == "123":
            # 登陆成功后设置session
            session["userinfo"] = {"name":username}
            return redirect("/")
    return render_template("login.html")

@app.route("/")
def index():
    # 获取session
    print(session["userinfo"])
    return "首页"

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