javascript - 使用 NodeJs 创建邮件服务

Question

我有两个文件，我的 app.js 和名为 mailer.js 的邮件程序模块。

启动应用程序时，我的 app.js 应该发送多封电子邮件。

const express = require('express');
const app = express();
const mailer = require('./Server/mailer');

mailer.sendHtmlMail(["email1", "email2"], "Test Email", "<p>Success!</p>");

app.listen(8888, function () {
    console.log('Server running on port 8888');
});

我的mailer.js执行邮件服务

    const nodemailer = require('nodemailer');

    const senderMail = "myEmail";

    const emailTransporter = nodemailer.createTransport({
      service: 'yahoo',
      auth: {
        user: senderMail,
        pass: 'pw'
      }
    });

    function getMailReceivers(mailReceivers){ // convert the string array to one string
      var receivers = "";

      for(var i = 0; i < mailReceivers.length; i++){
        receivers += mailReceivers[i];

        if(i < mailReceivers.length - 1)
            receivers += ", ";
      }

      return receivers;
    }

    function getMailOptions(mailReceivers, subject, html){ // set the mail options and return them
      return {
        from: senderMail,
        to: getMailReceivers(mailReceivers),
        subject: subj,
        html: content
      };
    }

    module.exports = function () { // export the sendMail function here

    sendHtmlMail: function(mailReceivers, subject, html){ // send the email
        emailTransporter.sendMail(getMailOptions(mailReceivers, subject, html), function(error, info){
          if (error) {
            throw error;
          } else {
            console.log(info.response);
          }
        });
      }

    };

我收到此错误消息

SyntaxError: Unexpected token (
    at createScript (vm.js:80:10)
    at Object.runInThisContext (vm.js:139:10)
    at Module._compile (module.js:599:28)
    at Object.Module._extensions..js (module.js:646:10)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
    at Module.require (module.js:579:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (C:\...\app.js:3:16)

但是我不明白，是吗

at Object. (C:...\app.js:3:16)

说我的邮件程序对象(第 3 行)第 16 行有错误？我在那里找不到任何语法错误..

Answer 1

mailer.js 文件的末尾就是问题所在。您看到的异常来自 app.js 的第 3 行，因为这是您 require() 另一个文件的地方。

问题是您混淆了函数实例化和对象初始化:

module.exports = function () { // export the sendMail function here

sendHtmlMail: function(mailReceivers, subject, html){ // send the email
    emailTransporter.sendMail(getMailOptions(mailReceivers, subject, html), function(error, info){
      if (error) {
        throw error;
      } else {
        console.log(info.response);
      }
    });
  }

};

您的代码期望该模块导出具有 sendHtmlMail 属性的对象，因此它应该是一个对象初始值设定项:

module.exports = { // export the sendMail function here

  sendHtmlMail: function(mailReceivers, subject, html){ // send the email
    emailTransporter.sendMail(getMailOptions(mailReceivers, subject, html), function(error, info){
      if (error) {
        throw error;
      } else {
        console.log(info.response);
      }
    });
  }
};