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我是 js 和开发的新手，在将有效负载推送到 db 后使节点邮件程序发送电子邮件。

错误（节点：8244）UnhandledPromiseRejectionWarning：错误 [ERR_HTTP_HEADERS_SENT]：在将标头发送到客户端后无法设置标头

错误：未定义收件人

我用于装箱产品的后期控制器

const mailer = require("../config/nodemailer");
module.exports.create = async (req, res) => {

  try {
  let product = new Product({
    name: req.body.name,
    description: req.body.description,
    isFeatured: req.body.isFeatured,
  });

    // await product.save();
    await mailer.contact(req, res); // node mailer
    // console.log("productCreated ==>>", product);
    // res.status(200).json(product);

    return res.send("Dummy :product created");
  } catch (error) {
    console.log("******Error While inserting data******", error);
    res.status(500).json({ message: error.message });
  }
};

节点邮件控制器

const nodemailer = require("nodemailer");

exports.contact = async (req, res) => {
//   var name = req.body.name;
//   var from = req.body.from;
//   var message = req.body.message;
//   var to = "jn";
  try {
    let transporter = nodemailer.createTransport({
      service: "gmail",
      host: "smtp.gmail.com",
      port: 587,
      secure: false, // true for 465, false for other ports
      auth: {
        user: "**********@gmail.com", 
        pass: "password",
      },
    });
    //
    var mailoptions = {
      from: "**********@gmail.com",
      to:"**********@gmail.com",
      subject: "Sending Email using Node.js",
      text: "That was easy!",
    };
    await transporter.sendMail({
      mailoptions,
      function(err, res) {
        if (err) {
          return res.status(200).json({
            message: err.message,
          });
        }
        return res.status(200).json({ message: "success" });
      },
    });
  } catch (error) {
    console.log(error);
    return res.json({ message: message });
  }
};
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2 回答 2

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嗨，兄弟，首先导入 nodemailer

const nodemailer = require("nodemailer");

var transporter = nodemailer.createTransport({
  service: 'gmail',
  auth: {
    user: 'youremail@gmail.com',
    pass: 'yourpassword'
  }
});

var mailOptions = {
  from: 'youremail@gmail.com',
  to: 'friend@yahoo.com',
  subject: 'Your subject',
  text: 'Your message!'
};

transporter.sendMail(mailOptions, function(error, info){
  if (error) {
    console.log(error);
  } else {
    console.log('Email sent: ' + info.response);
  }
});

按照上述步骤操作，并确保您的发送邮件 ID 没有启用两步验证。

于 2021-09-14T18:42:38.893 回答
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Nodemailer 需要一个数组或逗号分隔的列表，您使用的是纯字符串

to - 将出现在 To: 字段中的逗号分隔列表或收件人电子邮件地址数组

取自官方文档 https://nodemailer.com/message/

于 2021-09-14T18:35:34.060 回答