我是节点JS的新手。我正在努力针对后端MYSQL验证用户。
以下是身份验证的代码段
function Authenticate(username, password, fn) {
connection.connect();
var user;
connection.query('SELECT * from Users where username = ' +
connection.escape(username) + ' and password =' + connection.escape(password),
function(err, rows) {
user = rows[0].username;
});
if (!user) {
return fn(new Error('cannot find user'));
} else {
return fn(null, user);
}
connection.end();
}
这是我的回电功能。
app.post('/Login', function(req, res) {
Authenticate(req.body.username, req.body.password, function(err, user) {
if (user) {
req.session.regenerate(function() {
req.session.user = user;
req.session.success = 'Authenticated as ' + user;
res.redirect('Home');
});
} else {
req.session.error = 'Authentication failed, please check your username and password.';
res.redirect('Login');
}
});
})
我收到了一个错误,我无法理解。
TypeError: Cannot set property 'error' of undefined
at /...../.../node_modules/app.js:42:23
at Authenticate (/..../..../node_modules/app.js:82:11).
请分享您的想法!
答案 0 :(得分:0)
如果不检查是否为快速验证器正确配置了中间件,则取出else并查看是否有任何其他req.session正常运行