flask-login的简单实用

Posted 2020-09-05 webbky

# encoding: utf-8
from flask import Flask, Blueprint
from flask_login import (LoginManager, login_required, login_user,logout_user, UserMixin)

app = Flask(__name__)


class User(UserMixin):
    pass

app.secret_key = ‘s3cr3t‘
login_manager = LoginManager()
login_manager.session_protection = ‘strong‘#会话保护
login_manager.login_view = ‘auth.login‘ #如果未登录的用户尝试访问一个login_required装饰的视图函数，
                                        # Flask-Login会闪现一条消息并且重定向到登录视图提醒你登陆。
                                        # (如果未设置登录视图，它将会以401 错误退出)

#默认闪现的消息是Please log in to access this page.。
# 要自定义该消息，可以设置LoginManager.login_message。例如：login_manager.login_message = ‘请登录后访问‘

#要自定义消息分类的话，可以设置LoginManager.login_message_category。
#                如 login_manager.login_message_category = ‘info‘


login_manager.init_app(app)

@login_manager.user_loader
def load_user(user_id):

    return None

# url redirect
auth = Blueprint(‘auth‘, __name__)

@auth.route(‘/login‘, methods=[‘GET‘, ‘POST‘])
def login():
    user = User()
    login_user(user)
    return "login page"

@auth.route(‘/logout‘, methods=[‘GET‘, ‘POST‘])
@login_required
def logout():
    logout_user()
    return "logout page"

# test method
@app.route(‘/test‘)
@login_required
def test():
    return "yes , you are allowed"

app.register_blueprint(auth, url_prefix=‘/auth‘)
if __name__ == ‘__main__‘:
    app.run(debug=True)

官网：http://www.pythondoc.com/flask-login/

http://liuliqiang.info/flask_login_usage_and_more_tech/

https://amberno1111.github.io/2016/03/22/Flask/Flask-Login%E7%9A%84%E4%BD%BF%E7%94%A8/