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from flask import Blueprint, render_template, request, redirect, url_for, flash, session
from models import User # 用户模型
from app import db, bcrypt # 数据库和密码加密
from sqlalchemy.exc import IntegrityError
# 创建身份验证蓝图
auth_bp = Blueprint('auth', __name__)
# 路由:用户注册
@auth_bp.route('/register', methods=['GET', 'POST'])
def register():
if request.method == 'POST':
username = request.form.get('username', '')
password = request.form.get('password', '')
# 使用 Bcrypt 加密密码
hashed_password = bcrypt.generate_password_hash(password).decode('utf-8')
# 创建新用户
new_user = User(username=username, password=hashed_password)
try:
db.session.add(new_user) # 添加用户
db.session.commit() # 提交更改
flash('Registration successful!', 'success') # 注册成功
return redirect(url_for('auth.login')) # 重定向到登录页面
except IntegrityError: # 用户名重复
db.session.rollback() # 回滚更改
flash('Username already exists.', 'danger') # 错误信息
return render_template('register.html') # 显示注册页面
# 路由:用户登录
@auth_bp.route('/login', methods=['GET', 'POST'])
def login():
if request.method == 'POST':
username = request.form.get('username', '')
password = request.form.get('password', '')
# 查找用户
user = User.query.filter_by(username=username).first()
# 验证密码
if user and bcrypt.check_password_hash(user.password, password):
session['user_id'] = user.id # 存储用户ID在会话中
flash('Login successful!', 'success') # 登录成功
return redirect(url_for('index')) # 重定向到主页
else:
flash('Invalid username or password.', 'danger') # 错误信息
return render_template('login.html') # 显示登录页面
# 路由:用户注销
@auth_bp.route('/logout')
def logout():
session.pop('user_id', None) # 移除用户ID
flash('Logged out successfully.', 'success') # 注销成功
return redirect(url_for('index')) # 重定向到主页