Spring Boot实现发送邮件

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-mail</artifactId>
</dependency>

spring:
  mail:
    host: smtp.qq.com
    username: 425017255@qq.com
    password: xxxxxxxx
    properties:
      mail.smtp.ssl.enable: true

@SpringBootTest
class DemoApplicationTests {

    @Autowired
    JavaMailSenderImpl mailSender;

    @Test
    void contextLoads() {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setSubject("测试邮件");
        message.setText("这是一封测试邮件");
        message.setTo("blackball1998@outlook.com");
        message.setFrom("425017255@qq.com");
        mailSender.send(message);
    }

}

@SpringBootTest
class DemoApplicationTests {

    @Autowired
    JavaMailSenderImpl mailSender;

    @Test
    void contextLoads() throws MessagingException {
        MimeMessage message = mailSender.createMimeMessage();
        MimeMessageHelper messageHelper = new MimeMessageHelper(message, true, "utf-8");
        messageHelper.setSubject("测试复杂邮件");
       // 设置带样式的正文，使用html的方式设置样式
        messageHelper.setText("<h1>这是一封测试邮件</h1><p style='color:red'>请查收附件</p>",true);
       // 读取本地的一个文件，设置邮件的附件
        messageHelper.addAttachment("附件1.jpg",new File("1.png"));
        messageHelper.addAttachment("附件2.jpg",new File("2.png"));
        messageHelper.setTo("blackball1998@outlook.com");
        messageHelper.setFrom("425017255@qq.com");
        mailSender.send(message);
    }

}