node 使用 nodemailer工具发送验证码到邮箱

npm i nodemailer
或
yarn add nodemailer

const nodemailer = require('nodemailer')

nodemailer.createTransport({
    host: "smtp.qq.com",  // 邮箱服务的host，我使用的是QQ邮箱
    port: 465, 
    secure: true, 
    auth: { 
        user: 'XXX@qq.com', 发送邮件的邮箱
        pass: '邮箱授权码'
     } 
});

mailOptions = {
    from: '来自XX<XXX@qq.com>', //发送邮件的邮箱信息
    to: toEmail, // 发送给谁的邮箱
    subject: "验证码", // 标题
    // text: `你的验证码为XXX,3分钟内有效,请务透漏给他人`,//发送文本
    html: "你的验证码为<b style='color:skybkue;'>" + XXX + "</b>,3分钟内有效，请务透漏给他人！",
}

transporter.sendMail(mailOptions)

const nodemailer = require('nodemailer')
const sendEmail =  (toEmail, sendText, host = 'smtp.qq.com') => {
    return new Promise((resolve, reject) => {
      let transporter = nodemailer.createTransport({
        host: host,
        port: 465,
        // 开启安全连接，这个开不开都可以，对安全性有要求的话，最好开启
        secureConnection: true,
        auth: {
          user: 'XXX@qq.com',
          pass: '邮箱授权码',
        },
        tls: {
          rejectUnauthorized: false, // 拒绝认证就行了， 不然会报证书问题
        },
      });
      const mailOptions = {
        from: '来自XXX<XXX@qq.com>',
        to: toEmail,
        subject: "验证码",
        html: "你的验证码为<b style='color:skybkue;'>" + sendText + "</b>,3分钟内有效，请务透漏给他人！",
      }
      transporter.sendMail(mailOptions, (error, info) => {
        if (error) {
          reject(error);
        } else {
          resolve(info)
        }
      })
    })
}
module.exports = {
  sendEmail
}

const { sendEmail } = require("../utils/sendEmail");
/*email 邮箱账户 passWord  密码 verification_code 验证码  code_expires 验证码有效期 code_effective 验证码是否有效 （0 无效 ；1 有效 */
exports.GetCaptcha = async (req, res) => {
  try {
    const isExit = await resSql('SHOW TABLES LIKE "userAccount"');
    if (!isExit.length) {
      await resSql(
        `CREATE TABLE userAccount(email VARCHAR(50) NOT NULL,passWord VARCHAR(255),verification_code INT(10),code_expires VARCHAR(255),code_effective TINYINT(1) DEFAULT 0,PRIMARY KEY (email))`
      );
    }
    // 发送验证码到邮箱
    // console.log('=========检测邮箱格式=======');
    const { email } = req.body;
    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
    if (!emailRegex.test(email)) {
      res.json({
        code: 500,
        message: "错误的邮箱格式",
      });
      return;
    }
    // 设置验证码
    let verification_code = "";
    for (let i = 0; i < 6; i++) {
      verification_code += parseInt(Math.random() * 10);
    }
    const now_timestamp = moment().format("x");
    // 验证码3min内有效
    const code_expires = `${Number(now_timestamp) + 180000}`;
    // 查询email是否存在
    const isExitEmail = await resSql(
      `SELECT * FROM userAccount WHERE email='${email}'`
    );
    // 插入
    let sendCodeSql = `INSERT INTO userAccount (email, verification_code, code_expires, code_effective) VALUES ("${email}", "${verification_code}", "${code_expires}", 1)`;
    if (isExitEmail.length) {
      // 存在就修改
      sendCodeSql = `UPDATE userAccount SET verification_code='${verification_code}', code_expires='${code_expires}', code_effective=1 WHERE email='${email}'`;
    }
    sendEmail(email, verification_code)
      .then(async () => {
        try {
          await resSql(sendCodeSql);
          res.json({
            code: 200,
            message: "发送成功！验证码3分钟内有效",
          });
        } catch (error) {
          res.json({
            code: 500,
            message: error,
          });
        }
      })
      .catch((err) => {
        res.json({
          code: 500,
          message: err || "发送失败",
        });
      });
  } catch (error) {
    res.json({
      code: 500,
      message: error || "错误返回",
    });
  }
};