Question

我的代码在 nodejs 中发送带有 nodemailer 的电子邮件但是我想将文件附加到电子邮件但是我找不到办法在网上搜索但是我找不到有用的东西。有什么方法可以将文件附加到那个或任何可以帮助我用nodemailer附加文件的资源吗？

var nodemailer = require('nodemailer');
var events = require('events');
var check =1;
var events = new events.EventEmitter();
var smtpTransport = nodemailer.createTransport("SMTP",{
    service: "gmail",
    auth: {
        user: "example@gmail.com",
        pass: "pass"
    }
});
function inputmail(){
    ///////Email
    const from = 'example<example@gmail.com>';
    const to  = 'example@yahoo.com';
    const subject  = 'example';
    const text = 'example email';
    const html = '<b>example email</b>';
    var mailOption = {
        from: from,
        to:  to,
        subject: subject,
        text: text,
        html: html
    }
    return mailOption;
}
function send(){
        smtpTransport.sendMail(inputmail(),function(err,success){
        if(err){
            events.emit('error', err);
        }
        if(success){
            events.emit('success', success);
        }
    });
}
///////////////////////////////////
send();
events.on("error", function(err){
    console.log("Mail not send");
    if(check<10)
        send();
    check++;
});
events.on("success", function(success){
    console.log("Mail send");
});

Answer 1

在var mailOption中包含关键附件，如下所示：

var mailOptions = {
...
attachments: [
    {   // utf-8 string as an attachment
        filename: 'text1.txt',
        content: 'hello world!'
    },
    {   // binary buffer as an attachment
        filename: 'text2.txt',
        content: new Buffer('hello world!','utf-8')
    },
    {   // file on disk as an attachment
        filename: 'text3.txt',
        path: '/path/to/file.txt' // stream this file
    },
    {   // filename and content type is derived from path
        path: '/path/to/file.txt'
    },
    {   // stream as an attachment
        filename: 'text4.txt',
        content: fs.createReadStream('file.txt')
    },
    {   // define custom content type for the attachment
        filename: 'text.bin',
        content: 'hello world!',
        contentType: 'text/plain'
    },
    {   // use URL as an attachment
        filename: 'license.txt',
        path: 'https://raw.github.com/andris9/Nodemailer/master/LICENSE'
    },
    {   // encoded string as an attachment
        filename: 'text1.txt',
        content: 'aGVsbG8gd29ybGQh',
        encoding: 'base64'
    },
    {   // data uri as an attachment
        path: 'data:text/plain;base64,aGVsbG8gd29ybGQ='
    }
]

}

选择适合您需求的选项。

链接：Nodemailer Repository GitHub

祝你好运!!

Answer 2

我已经测试了这些附件中的每一种方法，但没有一种方法适合我。这是我的邮件程序功能代码，没有smtp传输配置：

function mailer(from, to, subject, attachments, body) {

    // Setup email
    var mailOptions = {
        from: from,
        to: to,
        subject: subject,
        attachments: attachments,
        html: body
    };

    // send mail with defined transport object
    smtpTransport.sendMail(mailOptions, function(error, response){
        if(error) console.log(error);
        else console.log("Message sent: " + response.message);
        // shut down the connection pool, no more messages
        smtpTransport.close();
    });
}

然后是电话：

var attachments = [{ filename: 'test.pdf', path: __dirname + '/pdf/test.pdf', contentType: 'application/pdf' }];
mailer("exped@gmail.com", "mymail@gmail.com", "Test", attachments, "<h1>Hello</h1>");

邮件成功但没有附件。即使我设置了字符串或缓冲区附件，也会产生相同的结果。

Answer 3

如果您要在邮件编写器构造函数中传递options对象，并且附件位于http服务器上，则其外观应为：

const options = {
    attachments = [
      { // use URL as an attachment
        filename: 'xxx.jpg',
        path: 'http:something.com/xxx.jpg'
      }
    ]
}

Answer 4

另一种解决方案是使用CDN在线托管您的图像，并链接到HTML中的在线图像源，例如。 <img src="list_image_url_here">。

（我使用nodemailer 2.6.0版本对nodemailer的图像嵌入有问题，这就是为什么我找到了这个解决方法。）

此解决方案的另一个好处是您不会向nodemailer发送任何附件，因此发送过程更加简化。

Answer 5

var express = require('express');
var router = express(),
multer = require('multer'),
upload = multer(),
fs = require('fs'),
path = require('path');
nodemailer = require('nodemailer'),

directory = path.dirname("");
var parent = path.resolve(directory, '..');
// your path to store the files
var uploaddir = parent + (path.sep) + 'emailprj' + (path.sep) + 'public' + (path.sep) + 'images' + (path.sep);
/* GET home page. */
router.get('/', function(req, res) {
res.render('index.ejs', {
    title: 'Express'
});
});

router.post('/sendemail', upload.any(), function(req, res) {

var file = req.files;
console.log(file[0].originalname)
fs.writeFile(uploaddir + file[0].originalname, file[0].buffer,     function(err) {
    //console.log("filewrited")
    //console.log(err)
})
var filepath = path.join(uploaddir, file[0].originalname);
console.log(filepath)
    //return false;
nodemailer.mail({
    from: "yourgmail.com",
    to: req.body.emailId, // list of receivers
    subject: req.body.subject + " ✔", // Subject line
    html: "<b>" + req.body.description + "</b>", // html body
    attachments: [{
        filename: file[0].originalname,
        streamSource: fs.createReadStream(filepath)
    }]
});
res.send("Email has been sent successfully");
})
module.exports = router;

Answer 6

var mailer = require('nodemailer');
mailer.SMTP = {
    host: 'host.com', 
    port:587,
    use_authentication: true, 
    user: 'you@example.com', 
    pass: 'xxxxxx'
};

Then read a file and send an email :

fs.readFile("./attachment.txt", function (err, data) {

    mailer.send_mail({       
        sender: 'sender@sender.com',
        to: 'dest@dest.com',
        subject: 'Attachment!',
        body: 'mail content...',
        attachments: [{'filename': 'attachment.txt', 'content': data}]
    }), function(err, success) {
        if (err) {
            // Handle error
        }

    }
});

Answer 7

您的代码几乎正确，只需添加“ attachments”属性即可将文件附加到邮件中，

您的邮件选项：

var mailOption = {
        from: from,
        to:  to,
        subject: subject,
        text: text,
        html: html
}

只需添加附件

var mailOption = {
        from: from,
        to:  to,
        subject: subject,
        text: text,
        html: html,
        attachments: [{
            filename: change with filename,
            path: change with file path
        }]
}

附件还提供了其他方法来附加文件以获取更多信息，请查看nodemailer社区的文档HERE

Answer 8

看看这里。 Nodemailer > Message configuration > Attachments

下面的代码段（pdfkit获取流）：

// in async func
pdf.end();
const stream = pdf;
const attachments = [{ filename: 'fromFile.pdf', path: './output.pdf', 
contentType: 'application/pdf' }, { filename: 'fromStream.pdf', content: stream, contentType: 'application/pdf' }];
await sendMail('"Sender" <sender@test.com>', 'reciver@test.com', 'Test Send Files', '<h1>Hello</h1>', attachments);

Stream使用content而不是streamSource这让我很困扰，与大家分享：）

如何使用nodemailer将文件附加到电子邮件

8 个答案: