SpringBoot项目简单实现给邮箱发送验证码

1. 开启邮箱的POP3/SMTP服务。进入邮箱 > 设置 > 账户

2. application.properties配置邮箱

#邮件发送配置
spring.mail.default-encoding=UTF-8
spring.mail.host=smtp.qq.com
spring.mail.username= 这里填发送验证的邮箱
spring.mail.password= 这里填邮箱的那个授权码
#配置邮箱465端口，否则本地测试可以，放到服务器上就不行
spring.mail.port=465

#这个端口有时候会出错，添加以下ssl配置。或者把端口改为 25

spring.mail.properties.mail.smtp.ssl.enable=true

spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true

3.Controller

/**
 * 忘记密码模块的发送邮箱验证码
 * 传入邮箱即可如"toEmail":"123@qq.com"
 * @param httpServletRequest
 * @param jsonObject
 * @return
 */
@RequestMapping(value = "/send/email",method = RequestMethod.POST)
@ResponseBody
public CodeMsg<Object> sendEmail(HttpServletRequest httpServletRequest, @RequestBody JSONObject jsonObject){
String toEmail = jsonObject.getString("toEmail");
    try {
        String emailCode = userService.sendEmailCode(httpServletRequest,toEmail);
        return new CodeMsg<>(200,"发送验证码完成",emailCode);
    } catch (Exception e) {
        log.error("
####" + e.getMessage(), e);
        return new CodeMsg<>(500, e.getMessage(), null);
    }
}

4.Service

/**
     * 给邮箱发送验证码
     *
     * @param httpServletRequest
     * @return
     */
    @Override
    public String sendEmailCode(HttpServletRequest httpServletRequest, String toEmail) {
        //生成随机验证码
        String checkCode = String.valueOf(new Random().nextInt(899999) + 100000);
        SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom(fromEmail);
        message.setTo(toEmail);
        message.setSubject("这是一个邮件主题——系统邮件");
        message.setText("您正在修改您的密码，本次验证码为：" + checkCode + "
 如非本人操作，请忽略！谢谢");
        mailSender.send(message);
        logger.info("邮件发送成功");
        return checkCode;
    }