flask-login在身份验证后随机使会话无效

from flask import Flask, session
from flask_login import LoginManager, login_user, current_user

app = Flask(__name__)
app.secret_key = 'your_secret_key'  # 设置Flask应用的密钥

login_manager = LoginManager()
login_manager.init_app(app)

@login_manager.user_loader
def load_user(user_id):
    # 根据用户ID加载用户对象
    return User.query.get(int(user_id))

@app.route('/login', methods=['GET', 'POST'])
def login():
    if request.method == 'POST':
        # 进行身份验证逻辑
        user = User.query.filter_by(username=request.form['username']).first()
        if user and user.verify_password(request.form['password']):
            login_user(user)
            # 生成新的会话ID
            session.regenerate()
            return '登录成功'
        else:
            return '用户名或密码错误'
    else:
        return '登录页面'

@app.route('/logout')
def logout():
    if current_user.is_authenticated:
        # 生成新的会话ID
        session.regenerate()
        logout_user()
        return '登出成功'
    else:
        return '用户未登录'

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