Node.js 我得到了一个“答案”;未处理的拒绝错误:Can';t在发送标题后设置标题。”;
我试图发送电子邮件验证链接,但我得到下面的错误Node.js 我得到了一个“答案”;未处理的拒绝错误:Can';t在发送标题后设置标题。”;,node.js,express,nodemailer,Node.js,Express,Nodemailer,我试图发送电子邮件验证链接,但我得到下面的错误 Error: Can 't set headers after they are sent. at validateHeader(_http_outgoing.js: 491: 11) at ServerResponse.setHeader(_http_outgoing.js: 498: 3) at ServerResponse.header(C: \Users\ fenil.k.shah\ GDPR\ gdpr - po
Error: Can 't set headers after they are sent.
at validateHeader(_http_outgoing.js: 491: 11)
at ServerResponse.setHeader(_http_outgoing.js: 498: 3)
at ServerResponse.header(C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ node_modules\ express\ lib\ response.js: 730: 10)
at ServerResponse.send(C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ node_modules\ express\ lib\ response.js: 170: 12)
at ServerResponse.json(C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ node_modules\ express\ lib\ response.js: 256: 15)
at ServerResponse.send(C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ node_modules\ express\ lib\ response.js: 158: 21)
at C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ controllers\ user.controller.js: 110: 45
at tryCatcher(C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ node_modules\ bluebird\ js\ release\ util.js: 16: 23)
at Promise._settlePromiseFromHandler(C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ node_modules\ bluebird\ js\ release\ promise.js: 512: 31)
at Promise._settlePromise(C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ node_modules\ bluebird\ js\ release\ promise.js: 569: 18)
at Promise._settlePromise0(C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ node_modules\ bluebird\ js\ release\ promise.js: 614: 10)
at Promise._settlePromises(C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ node_modules\ bluebird\ js\ release\ promise.js: 693: 18)
at Async._drainQueue(C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ node_modules\ bluebird\ js\ release\ async.js: 133: 16)
at Async._drainQueues(C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ node_modules\ bluebird\ js\ release\ async.js: 143: 10)
at Immediate.Async.drainQueues(C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ node_modules\ bluebird\ js\ release\ async.js: 17: 14)
at Immediate.(C: \Users\ fenil.k.shah\ GDPR\ gdpr - portal - server\ node_modules\ async - listener\ glue.js: 188: 31)
下面是我编写的代码
function createUser(group) {
// set user object to userParam without the cleartext password
var user = _.omit(req.body, ['password']);
// add hashed password to user object
user.password = bcrypt.hashSync(req.body.password, 10);
user.user_group = group._id;
user.isActive = false;
var userlogin = new models.User(user);
userlogin.save().then(function (user) {
console.log("User"+user)
var mailToken ="hgSgajAhagtahaFg";
var mobileOTP =Math.floor(Math.random() * 10000) + 9999 ;
var token = new userToken.Token({ _userId: user._id, token: mailToken , otp: mobileOTP });
token.save().then(function (err) {
console.log("Token ="+token);
if (err) {
console.log("Error"+err)
return res.status(500).send({ msg: err.message });
}
// Send the email
else{
var transporter = nodemailer.createTransport(smtpTransport({
service: "Gmail",
auth: {
user: '**********@gmail.com',
pass: "********"
}
}));
console.log("Transporter"+transporter);
var mailOptions = { from: '*******@gmail.com', to: user.email, subject: 'Account Verification Token', text: 'Hello,\n\n' + 'Please verify your account by clicking the link: \nhttp:\/\/' + req.headers.host + '\/confirmation\/' + token.token + '.\n' };
transporter.sendMail(mailOptions, function (err) {
if (err) { return res.status(500).send({ msg: err.message }); }
res.status(200).send('A verification email has been sent to ' + user.email + '.');
});
console.log('mail options '+mailOptions)
}
});
return res.send(user);
}).catch(function (err) {
console.log(err)
res.status(500).send(err);
});
}
}
这是因为当您发送电子邮件时,您返回状态为200的响应,然后再次执行
res.send
。响应只能发送一次 对于单个HTTP请求,只能发送一个响应
在你的情况下,你发送了两次
res.status(200).send('验证电子邮件已发送至'+user.email+')代码>-您在发送邮件后正在发送响应
返回res.send(用户)代码>-在函数末尾
因此,邮件发送基本上需要时间并返回
res.send(用户)
将在res.status(200.send)之前执行('验证电子邮件已发送到'+user.email+')代码>所以在后面的行中添加注释将解决您的问题。。您可以放置好的日志来确认邮件。Hi,当您多次发送邮件头时,会发生此错误