NestJS 集成 Nodemailer 实现邮件发送与验证码功能详解

import { Injectable } from '@nestjs/common';
import * as nodemailer from 'nodemailer';
interface MailInfo {
    // 接收方邮箱
    to: string;
    // 标题
    subject: string;
    // 文本
    text?: string;
    // 富文本，如果文本和富文本同时设置，富文本生效。
    html?: string;
  }
@Injectable()
export class EmailService {
  private transporter: nodemailer.Transporter;
  private mailConfig =  {
    host: 'smtp.qq.com',
    port: 465,
    secure: true,
    auth: {
    user: '你开通的邮箱账号',
    pass: '生成的密钥'
  }
  }
  constructor() {
    this.transporter = nodemailer.createTransport(this.mailConfig);
  }
  async sendEmail(mailInfo: MailInfo) {
     const info = await this.transporter.sendMail({
        from: this.mailConfig.auth.user, //发送方邮箱
        ...mailInfo
     })
     return info
  }
}

 @Post('/send/emailCaptcha')
  async sendEmailCaptcha(@Body() emailInfo: {email: string}){
      if(!emailInfo) {
         throw new HttpException('邮箱不能为空', HttpStatus.BAD_REQUEST)
      }
      //生成随机四位数
      const emailCaptcha = Math.floor(Math.random() * 9000) + 1000
      //生成的数据存在redis中,后面添加用户做验证
      await this.redisClient
      .multi()
      .set(
        `emailCaptcha:${emailInfo.email}`,
         emailCaptcha,
      )
      .expire( `emailCaptcha:${emailInfo.email}`, 60 * 30) //30min
      .exec()
      this.emailService.sendEmail({
            to: emailInfo.email,
            html: `<div>
            您本次的验证码是<span style="color:#FFB6C1; font-weight:700; font-size:24px">${emailCaptcha}</span>, 验证码有效期是30分钟 </div>`,
            subject: 'xxx平台邮箱检验提醒'
      })
  }