帮我实现html登陆及登出页面,支持session验证,后端是tornado,给出代码
时间: 2023-05-18 20:05:38 浏览: 83
python使用tornado实现登录和登出
以下是一个简单的HTML登录和登出页面,支持使用Tornado进行会话验证。您需要在Tornado后端编写相应的处理程序来处理登录和登出请求,并在HTML页面中使用JavaScript将表单数据发送到后端。
HTML登录页面:
```
<!DOCTYPE html>
<html>
<head>
<title>Login</title>
</head>
<body>
<h1>Login</h1>
<form id="login-form">
<label for="username">Username:</label>
<input type="text" id="username" name="username"><br><br>
<label for="password">Password:</label>
<input type="password" id="password" name="password"><br><br>
<input type="submit" value="Login">
</form>
<script>
// Send login form data to Tornado backend
document.getElementById('login-form').addEventListener('submit', function(event) {
event.preventDefault();
var xhr = new XMLHttpRequest();
xhr.open('POST', '/login');
xhr.setRequestHeader('Content-Type', 'application/json');
xhr.onload = function() {
if (xhr.status === 200) {
window.location.href = '/dashboard';
} else {
alert('Login failed. Please try again.');
}
};
xhr.send(JSON.stringify({
username: document.getElementById('username').value,
password: document.getElementById('password').value
}));
});
</script>
</body>
</html>
```
HTML登出页面:
```
<!DOCTYPE html>
<html>
<head>
<title>Logout</title>
</head>
<body>
<h1>Logout</h1>
<p>Are you sure you want to log out?</p>
<form id="logout-form">
<input type="submit" value="Logout">
</form>
<script>
// Send logout request to Tornado backend
document.getElementById('logout-form').addEventListener('submit', function(event) {
event.preventDefault();
var xhr = new XMLHttpRequest();
xhr.open('POST', '/logout');
xhr.setRequestHeader('Content-Type', 'application/json');
xhr.onload = function() {
if (xhr.status === 200) {
window.location.href = '/login';
} else {
alert('Logout failed. Please try again.');
}
};
xhr.send();
});
</script>
</body>
</html>
```
Tornado后端处理程序:
```
import tornado.web
import tornado.escape
class LoginHandler(tornado.web.RequestHandler):
def get(self):
self.render('login.html')
def post(self):
username = self.get_argument('username')
password = self.get_argument('password')
if self.authenticate(username, password):
self.set_secure_cookie('user', tornado.escape.json_encode({'username': username}))
self.write({'success': True})
else:
self.write({'success': False})
def authenticate(self, username, password):
# Implement your authentication logic here
return True
class LogoutHandler(tornado.web.RequestHandler):
def post(self):
self.clear_cookie('user')
self.write({'success': True})
```
在Tornado应用程序中,您需要使用以下代码来启用会话支持:
```
settings = {
'cookie_secret': 'your_secret_key_here',
'login_url': '/login',
'xsrf_cookies': True,
'session': {
'secret': 'your_secret_key_here',
},
}
application = tornado.web.Application([
(r'/login', LoginHandler),
(r'/logout', LogoutHandler),
# Other handlers...
], **settings)
```
阅读全文