错误：尝试使用nodemailer但未列出收件人时未定义收件人

我一直在尝试在我的MEAN应用上设置和使用nodemailer。 这里是mail.js …我用于我的server.js文件的路线。

'use strict'; const express = require('express'); const router = express.Router(); const nodemailer = require('nodemailer'); const config = require('./config'); const Message = require('../models/message'); var transporter = nodemailer.createTransport({ service: 'gmail', secure: false, port: 25, auth: { user: config.mailUser, //same as from in mailOptions pass: config.mailPass }, tls: { rejectUnauthorized: false } }); router.post('/contact', function(req, res){ var mailOptions = new Message({ from: '[e-mail]', to: req.body.to, subject: req.body.subject, text: req.body.text //html: req.body.html }); transporter.sendMail(mailOptions, function(error, info){ if(error){ return console.log(error); } return console.log('Message %s sent: %s', info.messageId, info.response); }); }); module.exports = router; 

和我的config.js文件看起来像这样。

 module.exports = { mailUser: '[e-mail]', mailPass: 'XXXXXXXXX' }; 

我正在使用邮递员API调用后端，但结果是标题中所述的错误。 任何人知道为什么 看来收件人是被定义的。

***更新

这是我的快递应用程序

 const express = require('express'); const cookieParser = require('cookie-parser'); const bodyParser = require("body-parser"); const mongoose = require('mongoose'); const appRoutes = require('./routes/app'); const keyRoutes = require('./routes/keys'); const mailRoutes = require('./routes/mail'); const app = express(); const uristring = process.env.MONGOLAB_URI || process.env.MONGOHQ_URL || 'mongodb://localhost/db'; mongoose.connect(uristring, function (err, res) { if (err) { console.log ('ERROR connecting to: ' + uristring + '. ' + err); } else { console.log ('Succeeded connected to: ' + uristring); } }); app.use(express.static(__dirname + '/dist')); app.use(bodyParser.json()); app.use(bodyParser.urlencoded({extended: false})); app.use(cookieParser()); app.use(function (req,res,next) { res.header('Access-Control-Allow-Origin', '*'); res.header('Access-Control-Allow-Headers','Origin, X-Requested-With, Content-Type, Accept'); res.header('Access-Control-Allow-Methods', 'POST, GET, PATCH, DELETE, OPTIONS'); next(); }); app.use('/mail', mailRoutes); app.use('/keys', keyRoutes); app.use('/', appRoutes); //catch 404 and forward error handler app.use(function (req, res, next) { return res.json('src/index'); }); app.listen(process.env.PORT || 8080); module.exports = app; 

这是我发送的请求

***更新

这是我的消息类。

 const mongoose = require('mongoose'); const Schema = mongoose.Schema; const schema = new Schema({ from: {type: String, required: true}, to: {type: String, required: true}, subject: {type: String, required: true}, text: {type: String, required: true}, html: {type: String, required: false} }); module.exports = mongoose.model('Message', schema); 

Answer 1

问题在于mongooseSchema。 我不是mongoose的专家，实际上从来没有在我的生活中使用它，但是当debugging你的代码时，我发现你为什么会遇到麻烦：

当你使用console.log打印这个模式

 let mailOptions = new Message({ from: '[e-mail]', to: req.body.to, subject: req.body.subject, text: req.body.text //html: req.body.html }); 

它输出以下内容：

 { from: '[e-mail]', to: '[e-mail]', subject: 'My subject', text: 'Email body', _id: 590135b96e08e624a3bd30d2 } 

这似乎是一个普通的对象。 实际上（不包括_id部分）它输出的是一样的：

 let mailOptions = { from: '[e-mail]', to: req.body.to, subject: req.body.subject, text: req.body.text //html: req.body.html }; 

但是后者在将其传递给nodemailer时起作用。

所以我试图弄清楚mailOptions的真实身份（就像我是JSON Bourne什么的）

使用：

 console.log(Object.assign({}, mailOptions)); 

我得到以下，这对nodemailer来说当然不好看。

 { '$__': InternalCache { strictMode: true, selected: undefined, shardval: undefined, saveError: undefined, validationError: undefined, adhocPaths: undefined, removing: undefined, inserting: undefined, version: undefined, getters: {}, _id: undefined, populate: undefined, populated: undefined, wasPopulated: false, scope: undefined, activePaths: StateMachine { paths: [Object], states: [Object], stateNames: [Object] }, ownerDocument: undefined, fullPath: undefined, emitter: EventEmitter { domain: null, _events: {}, _eventsCount: 0, _maxListeners: 0 } }, isNew: true, errors: undefined, _doc: { _id: 590137d8f8c7152645180e04, text: 'Email body', subject: 'My subject', to: '[e-mail]', from: '[e-mail]' } } 

通过mongoose文档阅读，我发现了一种方法，将其转换为一个简单的JavaScript对象，可以很好地与nodemailer。 该方法是：

toObject

所以总结一下，你有两个select：

1） transporter.sendMail(mailOptions.toObject() //...如果你想使用mongoose模式（我真的不知道为什么，但…）

2）删除mongoose模式，只使用:(这是我推荐的方法，因为mongoose与nodemailer没有任何关系）

 let mailOptions = { from: '[e-mail]', to: req.body.to, subject: req.body.subject, text: req.body.text //html: req.body.html }; 

经过testing，我发送没有问题的电子邮件。