Nodemailer在base64中发送更大的映像时崩溃

Question

我想在电子邮件中嵌入一个qrcode。这是我现在用来添加附件的代码：

mailOptions.attachments = [{
filename: 'image.png',
content: url.split("base64,")[1],
encoding: 'base64'
}];

如果url等于：，它就会工作

"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGAAAABgAQMAAADYVuV7AAAABlBMVEUAAAAAAAClZ7nPAAAAAXRSTlMAQObYZgAAAB9JREFUeAFjgIJRwP+BZM4oh/8/GHygIYd8h45yRgEAaHBnmaA4EHkAAAAASUVORK5CYII=";

然而，当我将其更改为qrcode时：

data:image/png;base64,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

代码正在崩溃，并给我以下错误：

Error: Connection closed
at SMTPConnection.<anonymous> (...node_modulesnodemailer-smtp-transportlibsmtp-transport.js:113:29)
...

我相信这是因为qrcode比第一张图像大，但它仍然相对较小。我尝试了很多方法，但没有什么能给我带来积极的结果。有什么解决办法吗？

Answer 1

如果您从物理位置访问图像，请使用此代码

var mailOptions = {
attachments: [{'filename': 'image.png','path': 'pathtoimagefileimage.png'}]

如果你是从代码生成qrcode而不是

var qr_png = qr.imageSync('string', {
type: 'png'
})
var mailOptions = {
attachments: [{'filename': 'image.png', 'content': qr_png}]

这个代码适用于我

注意：我使用"qr-image"将文本转换为qr码。