使用flask用户登录/身份验证保护页面

from flask import Flask, render_template, request, redirect, url_for, session
from werkzeug.security import generate_password_hash, check_password_hash

app = Flask(__name__)
app.secret_key = 'your_secret_key'

@app.route('/login', methods=['GET', 'POST'])
def login():
    if request.method == 'POST':
        username = request.form['username']
        password = request.form['password']
        # 在这里进行用户名和密码的验证
        # 如果验证通过，将用户信息保存到session中
        session['username'] = username
        return redirect(url_for('protected'))
    return render_template('login.html')

@app.route('/protected')
def protected():
    if 'username' in session:
        return render_template('protected.html')
    return redirect(url_for('login'))

@app.route('/logout')
def logout():
    session.pop('username', None)
    return redirect(url_for('login'))