#yyds干货盘点# SpringBoot 发送邮箱验证码（HTML模板）
Posted ZS_Jie
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在本文中会继续详细的为大家讲解如何在 SpringBoot 中更简单的发送邮件。
导入 Mail 和 Thymeleaf 依赖
<!--mail依赖-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<!--thymeleaf依赖-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>在 application.yml 文件中设置参数
邮箱授权码获取教程：Java 使用 JavaMailSenderImpl 实现发送 QQ 邮件
#设置邮箱
spring:
mail:
host: smtp.qq.com #邮箱服务器地址
username: test@qq.com #邮箱账号
password: ********** #邮箱授权码
default-encoding: utf-8 #默认编码
#邮件发件人
mail:
fromMail:
fromAddress: test@qq.com编写验证码的生成类
/**
* @author Jie
*/
@Service
public class VerificationCodeServiceImpl implements VerificationCodeService
/**
* 生产的验证码位数
*/
private final int generateVerificationCodeLength=4;
private final String[] metaCode="0", "1", "2", "3", "4", "5", "6", "7", "8", "9",
"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O",
"P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z";
@Override
public String generateVerificationCode()
Random random = new Random();
StringBuilder verificationCode = new StringBuilder();
while (verificationCode.length()<generateVerificationCodeLength)
int i = random.nextInt(metaCode.length);
verificationCode.append(metaCode[i]);
return verificationCode.toString();
编写邮件的服务类
/**
* @author Jie
*/
@Service
public class EmailServiceImpl implements EmailService
@Autowired
private JavaMailSender mailSender;
/**
* 邮件发件人
*/
@Value("$mail.fromMail.fromAddress")
private String fromAddress;
@Autowired
TemplateEngine templateEngine;
@Autowired
private VerificationCodeService verificationCodeService;
@Override
public boolean sendEmailVerificationCode(String toAddress)
//调用 VerificationCodeService 生产验证码
String verifyCode = verificationCodeService.generateVerificationCode();
//创建邮件正文
Context context = new Context();
context.setVariable("verifyCode", Arrays.asList(verifyCode.split("")));
//将模块引擎内容解析成html字符串
String emailContent = templateEngine.process("EmailVerificationCode", context);
MimeMessage message=mailSender.createMimeMessage();
try
//true表示需要创建一个multipart message
MimeMessageHelper helper=new MimeMessageHelper(message,true);
helper.setFrom(fromAddress);
helper.setTo(toAddress);
helper.setSubject("注册验证码");
helper.setText(emailContent,true);
mailSender.send(message);
return true;
catch (MessagingException e)
return false;
编写验证码 HTML 模板
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>邮箱验证码</title>
<style>
table
width: 700px;
margin: 0 auto;
#top
width: 700px;
border-bottom: 1px solid #ccc;
margin: 0 auto 30px;
#top table
font: 12px Tahoma, Arial, 宋体;
height: 40px;
#content
width: 680px;
padding: 0 10px;
margin: 0 auto;
#content_top
line-height: 1.5;
font-size: 14px;
margin-bottom: 25px;
color: #4d4d4d;
#content_top strong
display: block;
margin-bottom: 15px;
#content_top strong span
color: #f60;
font-size: 16px;
#verificationCode
color: #f60;
font-size: 24px;
#content_bottom
margin-bottom: 30px;
#content_bottom small
display: block;
margin-bottom: 20px;
font-size: 12px;
color: #747474;
#bottom
width: 700px;
margin: 0 auto;
#bottom div
padding: 10px 10px 0;
border-top: 1px solid #ccc;
color: #747474;
margin-bottom: 20px;
line-height: 1.3em;
font-size: 12px;
#content_top strong span
font-size: 18px;
color: #FE4F70;
#sign
text-align: right;
font-size: 18px;
color: #FE4F70;
font-weight: bold;
#verificationCode
height: 100px;
width: 680px;
text-align: center;
margin: 30px 0;
#verificationCode div
height: 100px;
width: 680px;
.button
color: #FE4F70;
margin-left: 10px;
height: 80px;
width: 80px;
resize: none;
font-size: 42px;
border: none;
outline: none;
padding: 10px 15px;
background: #ededed;
text-align: center;
border-radius: 17px;
box-shadow: 6px 6px 12px #cccccc,
-6px -6px 12px #ffffff;
.button:hover
box-shadow: inset 6px 6px 4px #d1d1d1,
inset -6px -6px 4px #ffffff;
</style>
</head>
<body>
<table>
<tbody>
<tr>
<td>
<div id="top">
<table>
<tbody><tr><td></td></tr></tbody>
</table>
</div>
<div id="content">
<div id="content_top">
<strong>尊敬的用户：您好！</strong>
<strong>
您正在进行<span>注册账号</span>操作，请在验证码中输入以下验证码完成操作：
</strong>
<div id="verificationCode">
<button class="button" th:each="a:$verifyCode">[[$a]]</button>
</div>
</div>
<div id="content_bottom">
<small>
注意：此操作可能会修改您的密码、登录邮箱或绑定手机。如非本人操作，请及时登录并修改密码以保证帐户安全
<br>（工作人员不会向你索取此验证码，请勿泄漏！)
</small>
</div>
</div>
<div id="bottom">
<div>
<p>此为系统邮件，请勿回复<br>
请保管好您的邮箱，避免账号被他人盗用
</p>
<p id="sign">——Romantik</p>
</div>
</div>
</td>
</tr>
</tbody>
</table>
</body>测试
@SpringBootTest
class ServiceApplicationTests
@Autowired
private EmailService emailService;
@Test
void contextLoads()
boolean test = emailService.sendEmailVerificationCode("test.com");
System.out.println(test);
查看邮件
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