Spring boot项目如何发送邮件

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

@Autowired
    JavaMailSenderImpl sender;
 
    @Async
    public void sendSimpleMail(){
        SimpleMailMessage mailMessage = new SimpleMailMessage();
        mailMessage.setSubject("test");
        mailMessage.setText("hello mail to ");
        mailMessage.setTo("@qq.com");
        mailMessage.setFrom("@qq.com");
        sender.send(mailMessage);
    }
 
    @Async
    public void sendMail(){
        MimeMessage mimeMessage = sender.createMimeMessage();
        MimeMessageHelper helper = null;
        try {
            helper = new MimeMessageHelper(mimeMessage,true);
        } catch (MessagingException e) {
            e.printStackTrace();
        }
        try {
            helper.setSubject("test");
            helper.setText("hello mail to ");
            helper.setTo("@qq.com");
            helper.setFrom("@qq.com");
            helper.addAttachment("1.jpg",new File("C:\\Users\\Pictures\\1.jpg"));
        } catch (MessagingException e) {
            e.printStackTrace();
        }
        sender.send(mimeMessage);
    }