Nodejs + Redis 实现发送邮箱验证码及校验功能（流程相对完整）

const nodemailer = require('nodemailer');
const redis = require('redis');
 
// 创建邮件发送器
const transporter = nodemailer.createTransport({
    service: 'your-email-service', // 替换为你的邮件服务
    auth: {
        user: 'your-email@example.com', // 替换为你的邮箱用户名
        pass: 'your-email-password' // 替换为你的邮箱密码
    }
});
 
// 创建Redis客户端
const redisClient = redis.createClient({
    host: 'localhost', // Redis服务器地址
    port: 6379, // Redis服务器端口
    // 如果需要密码，使用以下选项
    // password: 'your-redis-password'
});
 
// 生成随机验证码
function generateCode(length) {
    let code = '';
    const chars = '0123456789';
    for (let i = 0; i < length; i++) {
        code += chars[Math.floor(Math.random() * chars.length)];
    }
    return code;
}
 
// 发送邮件验证码
async function sendEmail(to, code) {
    const mailOptions = {
        from: 'your-email@example.com', // 发件人邮箱地址
        to, // 收件人邮箱地址
        subject: 'Email Verification', // 邮件主题
        text: `Your verification code is: ${code}` // 邮件文本内容
    };
 
    try {
        await transporter.sendMail(mailOptions);
        console.log('Email sent successfully');
    } catch (error) {
        console.error('Error sending email: ', error);
    }
}
 
// 验证邮箱验证码
async function verifyCode(email, code) {
    const key = `email_code:${email}`;
    try {
        const storedCode = await redisClient.get(key);
        if (code === storedCode) {
            console.log('Email verification successful');
            // 验证成功后从Redis中删除验证码
            await redisClient.del(key);
            return true;
        } else {
            console.log('Email verification failed');
            return false;
        }
    } catch (error) {
        console.error('Error verifying code: ', error);
        return false;
    }
}
 
// 示例：生成验证码并发送邮件
async function sendEmailWithCode(email) {
    const code = generateCode(6); // 生成6位随机验证码
    const key = `email_code:${email}`;
 
    try {
        // 将验证码存储到Redis，并设置过期时间
        await redisClient.set(key, code);
        await redisClient.expire(key, 300); // 设置验证码有效期为300秒
 
        // 发送邮件
        await sendEmail(email, code);
    } catch (error) {
        console.error('Error sending email with