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邮件登录之自定义邮件

news 2025/11/3 17:17:52

邮件登录之自定义邮件

上一篇我们分享了如何实现联系qq邮箱来实现验证码登录，这里接上回的自定义邮件功能。

一、依赖

添加模板引擎依赖：

<!-- Thymeleaf 模板引擎 -->
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>

二、工具类的改造


@Component
public class MailUtil {@Autowiredprivate JavaMailSender mailSender;@Autowiredprivate TemplateEngine templateEngine;@Value("${spring.mail.username}")private String from;public void sendVerificationMail(String to, String code) {try {MimeMessage message = mailSender.createMimeMessage();MimeMessageHelper helper = new MimeMessageHelper(message, true, "UTF-8");helper.setFrom(new InternetAddress(from, "验证中心", "UTF-8"));helper.setTo(to);helper.setSubject("登录验证码");// 填充模板变量Context context = new Context();context.setVariable("code", code);String html = templateEngine.process("mail", context);helper.setText(html, true);// 添加嵌入资源（logo + 背景）helper.addInline("logo", new ClassPathResource("templates/images/logo.png"));mailSender.send(message);} catch (IOException e) {System.err.println("资源文件路径错误！");e.printStackTrace();} catch (Exception e) {System.err.println(" 邮件发送失败！");e.printStackTrace();}}
}

三、控制器的改造

@GetMapping("/sendCode")
public String sendCode(@RequestParam String email) {String key = "login:code:" + email;String cooldownKey = "login:cooldown:" + email;// 生成验证码String code = String.valueOf(100000 + new Random().nextInt(900000));if (Boolean.TRUE.equals(redisTemplate.hasKey(cooldownKey))) {return "发送过于频繁，请稍后再试。";}// 检查 Redis 中是否已有未过期验证码if (Boolean.TRUE.equals(redisTemplate.hasKey(key))) {return "验证码未过期，请检查您的邮箱。";}redisTemplate.opsForValue().set(cooldownKey, "1", 60, TimeUnit.SECONDS);try {// 发送邮件mailUtil.sendVerificationMail(email, code);// 邮件发送成功后再写入 RedisredisTemplate.opsForValue().set(key, code, 5, TimeUnit.MINUTES);} catch (Exception e) {e.printStackTrace();return "邮件发送失败，请稍后重试。";}return "验证码已发送到 " + email;
}