1.pom.xml添加依赖：
<!--邮箱依赖--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-mail</artifactId> </dependency> <!--thymeleaf模板引擎--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> <version>2.3.7.RELEASE</version> </dependency>
2.配置application.properties文件：
########## 邮箱配置 ########## # smtp服务器地址: spring.mail.host=XXX # smtp服务器用户名: spring.mail.username=XXX # smtp服务器授权码: spring.mail.password=XXX # 设置是否需要认证，如果为true,那么用户名和密码 true: spring.mail.properties.mail.smtp.auth=true spring.mail.properties.mail.smtp.starttls.enable=true spring.mail.properties.mail.smtp.starttls.required=true ########## Thymelea配置 ########## # thymeleaf路径 spring.thymeleaf.prefix=classpath:/templates/ # 设置thymeleaf模板后缀 spring.thymeleaf.suffix=.html # 设置thymeleaf严格校验 spring.thymeleaf.mode=HTML # 设置thymeleaf编码 spring.thymeleaf.encoding=UTF-8 # 设置thymeleaf类型 spring.thymeleaf.servlet.content-type=text/html # 是否开启缓存 spring.thymeleaf.cache=false #启用thymeleaf视图分辨率 spring.thymeleaf.enabled=true
3.编写测试用例：
// 邮件测试
@Autowired
private JavaMailSender javaMailSender;
@Autowired
private TemplateEngine templateEngine;
@Test
public void sendSimpleMail() throws Exception {
MimeMessage mimeMessage = javaMailSender.createMimeMessage();
MimeMessageHelper message = new MimeMessageHelper(mimeMessage, true);
Context context = new Context();
Map<String, Object> map = new HashMap<>();
map.put("username", "XXX");//Thymelaf模板username内容
context.setVariables(map);
String emailContent = templateEngine.process("mailtemplates", context);
message.setFrom("XXX@qq.com");//收件人
message.setTo("XXX@qq.com");//收件人邮箱
message.setSubject("XXX");//主题
message.setText(emailContent, true);//邮件正文
javaMailSender.send(mimeMessage);
}
4.在resources/templates创建mailtemplates.html
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>邮箱模板</title>
</head>
<body>
<div>
<span th:text="${username}" ></span>
</div>
</body>
</html>
5.运行单元测试