flask注册登录
app.py
@app.route('/register', methods=['GET', 'POST'])
def register():
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
hashed_password = bcrypt.generate_password_hash(password).decode('utf-8')
if User.query.filter_by(username=username).first():
flash('该用户名已经被注册')
return render_template('register.html')
user = User(username=username, password=hashed_password)
db.session.add(user)
db.session.commit()
flash('您的账号已创建，现在可以登录了！', 'success')
return redirect(url_for('login'))
return render_template('register.html')
@app.route('/login')
def login():
return render_template('login.html')
register.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>注册</title>
<style type="text/css">
.alert{
color:red;
font-size:12.7px;
}
</style>
</head>
<body>
<h1>注册</h1>
<form method="POST" action="{{ url_for('register') }}">
<input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
<label for="username">用户名:</label>
<input type="text" id="username" name="username" required>
<br>
<label for="password">密码:</label>
<input type="password" id="password" name="password" required>
<br>
<button type="submit">注册</button>
</form>
<p>
{% for message in get_flashed_messages() %}
<div class="alert">{{ message }}</div>
{% endfor %}
</p>
</body>
</html>
login.html
<!DOCTYPE html>
<html>
<head>
<title>登录界面</title>
<style>
body {
font-family: Arial, sans-serif;
background-color: #f4f4f4;
}
.container {
width: 300px;
margin: 0 auto;
padding: 20px;
background-color: #fff;
border: 1px solid #ddd;
border-radius: 5px;
box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}
h2 {
text-align: center;
}
label {
display: block;
margin-bottom: 5px;
}
input[type="text"],
input[type="password"] {
width: 100%;
padding: 10px;
margin-bottom: 15px;
border: 1px solid #ddd;
border-radius: 3px;
}
button {
width: 100%;
padding: 10px;
background-color: #4CAF50;
color: #fff;
border: none;
border-radius: 3px;
cursor: pointer;
}
button:hover {
background-color: #45a049;
}
a {
display: block;
text-align: center;
margin-top: 10px;
color: #4CAF50;
text-decoration: none;
}
</style>
</head>
<body>
<div class="container">
<h2>登录</h2>
<form>
<label for="username">用户名：</label>
<input type="text" id="username" name="username">
<label for="password">密码：</label>
<input type="password" id="password" name="password">
<button type="submit">登录</button>
<a href="#">忘记密码？</a>
</form>
</div>
</body>
</html>
