我使用的是firebase云函数。我配置了以下设置。虽然这在我的本地机器上运行得很好，但在服务器上运行时会出现问题。我在互联网上尝试了无数次变通方法，但都没有成功。这是怎么回事？
'use strict'
const functions = require('firebase-functions');
var admin = require('firebase-admin');
const express = require('express');
const nodemailer = require('nodemailer');
const app = express()
var emailRecepient;
var userName;
const smtpTransport = nodemailer.createTransport({
service: "gmail",
host: 'smtp.gmail.com',
port: 587, // tried enabling and disabling these, but no luck
secure: false, // similar as above
auth: {
user: '<emailid>',
pass: '<password>'
},
tls: {
rejectUnauthorized: false
}
});
var mailOptions = {
from: 'test <hello@example.com>',
to: emailRecepient,
subject: 'Welcome to test',
text: 'welcome ' + userName + ". did you see the new things?"
};
function sendmail() {
smtpTransport.sendMail(mailOptions, function (error, info) {
if (error) {
console.log(error);
}
else {
console.log('Email sent: ' + info.response);
}
});
};
exports.sendEmails = functions.database.ref('/users/{userID}/credentials').onCreate((snap, context) => {
const userID = context.params.userID;
const vals = snap.val()
userName = vals.name;
emailRecepient = vals.email;
smtpTransport.sendMail(mailOptions, function (error, info) {
if (error) {
console.log("Error sending email ---- ",error);
}
else {
console.log('Email sent: ' + info.response);
}
});
return true;
});
我在所有案例中得到的错误是：
Error sending email 2 ---- { Error: Invalid login: 534-5.7.14 <https://accounts.google.com/signin/continue?sarp=1&scc=1&plt=AKgnsbsi
534-5.7.14 qRQLfD9YlFZDsPj7b8QQACro9c41PjhSVo0NZ4i5ZHNlyycFi_FyRp8VdZ_dH5ffWWAABQ
534-5.7.14 8rH2VcXkyZBFu00-YHJUQNOqL-IqxEsZqbFCwCgk4-bo1ZeDaKTdkEPhwMeIM2geChH8av
534-5.7.14 0suN293poXFBAk3TzqKMMI34zCvrZlDio-E6JVmTrxyQ-Vn9Ji26LaojCvdm9Bq_4anc4U
534-5.7.14 SpQrTnR57GNvB0vRX1BihDqKuKiXBJ5bfozV1D1euQq18PZK2m> Please log in via
534-5.7.14 your web browser and then try again.
534-5.7.14 Learn more at
534 5.7.14 https://support.google.com/mail/answer/78754 t2sm3669477iob.7 - gsmtp
at SMTPConnection._formatError (/user_code/node_modules/nodemailer-smtp-transport/node_modules/smtp-connection/lib/smtp-connection.js:528:15)
at SMTPConnection._actionAUTHComplete (/user_code/node_modules/nodemailer-smtp-transport/node_modules/smtp-connection/lib/smtp-connection.js:1231:30)
at SMTPConnection.<anonymous> (/user_code/node_modules/nodemailer-smtp-transport/node_modules/smtp-connection/lib/smtp-connection.js:319:22)
at SMTPConnection._processResponse (/user_code/node_modules/nodemailer-smtp-transport/node_modules/smtp-connection/lib/smtp-connection.js:669:16)
at SMTPConnection._onData (/user_code/node_modules/nodemailer-smtp-transport/node_modules/smtp-connection/lib/smtp-connection.js:493:10)
at emitOne (events.js:96:13)
at TLSSocket.emit (events.js:188:7)
at readableAddChunk (_stream_readable.js:176:18)
at TLSSocket.Readable.push (_stream_readable.js:134:10)
at TLSWrap.onread (net.js:559:20)
code: 'EAUTH',
response: '534-5.7.14 <https://accounts.google.com/signin/continue?sarp=1&scc=1&plt=AKgnsbsin534-5.7.14 qRQLfD9YlFZDsPj7b8QQACro9c41PjhSVo0NZ4i5ZHNlyycFi_FyRp8VdZ_dH5ffWWAABQn534-5.7.14 8rH2VcXkyZBFu00-YHJUQNOqL-IqxEsZqbFCwCgk4-bo1ZeDaKTdkEPhwMeIM2geChH8avn534-5.7.14 0suN293poXFBAk3TzqKMMI34zCvrZlDio-E6JVmTrxyQ-Vn9Ji26LaojCvdm9Bq_4anc4Un534-5.7.14 SpQrTnR57GNvB0vRX1BihDqKuKiXBJ5bfozV1D1euQq18PZK2m> Please log in vian534-5.7.14 your web browser and then try again.n534-5.7.14 Learn more atn534 5.7.14 https://support.google.com/mail/answer/78754 t2sm3669477iob.7 - gsmtp',
responseCode: 534,
command: 'AUTH PLAIN' }
我甚至关掉了allow secure apps in the google settings。但出于某种原因，这似乎不起作用。非常感谢您的帮助。
根据Renaud的建议，我尝试了firebase-samples/email-confirmation，但出现了以下错误：
TypeError: snapshot.changed is not a function
at exports.sendEmailConfirmation.functions.database.ref.onWrite (/user_code/index.js:38:17)
at Object.<anonymous> (/user_code/node_modules/firebase-functions/lib/cloud-functions.js:112:27)
at next (native)
at /user_code/node_modules/firebase-functions/lib/cloud-functions.js:28:71
at __awaiter (/user_code/node_modules/firebase-functions/lib/cloud-functions.js:24:12)
at cloudFunction (/user_code/node_modules/firebase-functions/lib/cloud-functions.js:82:36)
at /var/tmp/worker/worker.js:758:24
at process._tickDomainCallback (internal/process/next_tick.js:135:7)
干杯
当您在后台触发的云函数中执行异步操作时，您必须返回一个promise，这样云函数就会等待这个promise解析以终止。
这在官方的Firebase系列视频中得到了很好的解释：https://firebase.google.com/docs/functions/video-series/.特别要看标题为"学习JavaScript承诺"的三个视频(第2部分和第3部分特别关注背景触发的云函数，但之前确实值得看第1部分(。
所以你应该修改你的代码如下：
exports.sendEmails = functions.database.ref('/users/{userID}/credentials').onCreate((snap, context) => {
const userID = context.params.userID;
const vals = snap.val()
userName = vals.name;
emailRecepient = vals.email;
return smtpTransport.sendMail(mailOptions);
});
如果您想将电子邮件发送的结果打印到控制台，您可以执行以下操作：
return smtpTransport.sendMail(mailOptions)
.then((info) => console.log('Email sent: ' + info.response))
.catch((error) => console.log("Error sending email ---- ", error));
});
实际上，有一个官方的云函数示例可以做到这一点，请参阅https://github.com/firebase/functions-samples/blob/master/email-confirmation/functions/index.js
我知道这是一个漫长的讨论，让我分享为其他有类似问题的人制定的代码片段，这样会更容易弄清楚。
1(函数.ts(用TypeScript编写(
import * as admin from 'firebase-admin';
import * as functions from 'firebase-functions';
import * as nodemailer from 'nodemailer';
admin.initializeApp();
// I'm taking all these constants as secrets injected dynamically (important when you make `git push`), but you can simply make it as a plaintext.
declare const MAIL_ACCOUNT: string; // Declare mail account secret.
declare const MAIL_HOST: string; // Declare mail account secret.
declare const MAIL_PASSWORD: string; // Declare mail password secret.
declare const MAIL_PORT: number; // Declare mail password secret.
const mailTransport = nodemailer.createTransport({
host: MAIL_HOST,
port: MAIL_PORT, // This must be a number, important! Don't make this as a string!!
auth: {
user: MAIL_ACCOUNT,
pass: MAIL_PASSWORD
}
});
exports.sendMail = functions.https.onRequest(() => {
const mailOptions = {
from: 'ME <SENDER@gmail.com>',
to: 'RECEIVER@gmail.com',
subject: `Information Request from ME`,
html: '<h1>Test</h1>'
};
mailTransport
.sendMail(mailOptions)
.then(() => {
return console.log('Mail sent'); // This log will be shown in Firebase Firebase Cloud Functions logs.
})
.catch(error => {
return console.log('Error: ', error); // This error will be shown in Firebase Cloud Functions logs.
});
});
也就是说，你应该收到一封从SENDER@gmail.com到RECEIVER@gmail.com的电子邮件，当然可以根据自己的需要进行修改。
注意：我在localhost上正确发送邮件时遇到了同样的问题，但在部署时没有。在我的案例中，问题似乎是我在createTransport中没有使用port和host，而是使用了：
const mailTransport = nodemailer.createTransport({
service: 'gmail',
auth: {
user: MAIL_ACCOUNT,
pass: MAIL_PASSWORD
}
});
除此之外，不要忘记启用不太安全的应用程序访问On。而且https://accounts.google.com/DisplayUnlockCaptcha可能会有所帮助。
在检查上面列出的所有事情都在我的代码中完成后，我解决了登录谷歌帐户(使用我在项目中使用的帐户(的问题。我必须识别来自另一个来源的活动(谷歌检测到Firebase试图访问该帐户(，就这样。在那之后，我试图从火球云发送另一封电子邮件，它在上运行良好