如何在nodejs中使用nodemailer进行批量数据发送？

Posted 2023-03-08

【中文标题】如何在nodejs中使用nodemailer进行批量数据发送？

【英文标题】：how to use nodemailer in nodejs for bulk data sending?

【发布时间】：2019-09-15 13:16:31

【问题描述】：

我在下面有 nodemailer 代码，它很好并且可以工作。我的问题是将个人数据发送到个人电子邮件。 id_array 有两封电子邮件，no_array 有两个单独的数据，我如何将“1”发送到[e-mail]，将“2”发送到 [e-mail]？

var id_array = ["[e-mail]","[e-mail]"];
var no_array = ["1","2"];


var mailer = require("nodemailer");

// Use Smtp Protocol to send Email
var smtpTransport = mailer.createTransport(
    service: "Gmail",
    auth: 
        user: "[e-mail]",
        pass: "mypassword"
    
);

var mail = 
    from: "Sachin Murali <[e-mail]>",
    to: [id_array],
    subject: "Sachin's Test on new Node.js project",
    text: [no_array]
   // html: "<b>"\"[no_array]\""</b>"


smtpTransport.sendMail(mail, function(error, response)
    if(error)
        console.log(error);
    else
        console.log("Message sent: " + JSON.stringify(response));
    

    smtpTransport.close();
  );

【参考方案1】：

在循环中为每个接收者准备参数，并使用 Promise 并行运行所有电子邮件

  var id_array = ["[e-mail]","[e-mail]"];
  var no_array = ["1","2"];

  var mailer = require("nodemailer");

    // Use Smtp Protocol to send Email
  var smtpTransport = mailer.createTransport(
    service: "Gmail",
    auth: 
        user: "[e-mail]",
        pass: "mypassword"
    
 );

 let emailPromiseArray = [];

    //prepare the email for each receiver
    for(let i=0;i<id_array.length;i++)
         emailPromiseArray.push(
             sendMail(
                  from: "Sachin Murali <[e-mail]>",
                  to: id_array[i],
                  subject: "Sachin's Test on new Node.js project",
                  text:no_array[i]
             )
         )
    

    //run the promise
    Promise.all(emailPromiseArray).then((result)=>
        console.log('all mail completed');
    ).catch((error)=>
        console.log(error);
    )

    function sendMail(mail)

        return new Promise((resolve,reject)=>
            smtpTransport.sendMail(mail, function(error, response)
        if(error)
            console.log(error);
            reject(error);
        else
            console.log("Message sent: " + JSON.stringify(response));
            resolve(response);
        

        smtpTransport.close();
            );
        )
    

【讨论】：

当我运行上面的代码时出现错误：“sendmail is not defined”

我的意思是检查函数名是否正确，你说""sendmail 未定义" 但在我的代码中M 是大写

当我复制你的代码时出现错误：ReferenceError: smtpTransport is not defined