邮箱设置–>账户–>POP3/SMTP服务开启

   org.springframework.boot
   spring-boot-starter-mail
   2.1.5.RELEASE


 
     org.springframework.boot
     spring-boot-starter-thymeleaf
 

# 访问邮箱的域名 smtp表示协议
spring.mail.host=smtp.qq.com
spring.mail.username=*******@qq.com
#授权码
spring.mail.password=***********
spring.mail.protocol=smtps
# 采用ssl安全连接
spring.mail.properties.mail.smtp.ssl.enable=true

@Component
public class MailClient {

    @Autowired
    private JavaMailSender mailSender;

    @Value("${spring.mail.username}")
    private String from;

    public void sendMail(String to, String subject, String content) {
        try {
            MimeMessage message = mailSender.createMimeMessage();
            MimeMessageHelper helper = new MimeMessageHelper(message);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            //第二个参数为true表示邮件正文是html格式的，默认是false
            helper.setText(content, true);
            mailSender.send(helper.getMimeMessage());
        } catch (MessagingException e) {
            e.getMessage();
        }
    }

}

@RunWith(SpringRunner.class)
@SpringBootTest
@ContextConfiguration(classes = CommunityApplication.class)
public class MailTests {

    @Autowired
    private MailClient mailClient;

    @Autowired
    private TemplateEngine templateEngine;

    @Test
    public void testTextMail() {
        mailClient.sendMail("**********@qq.com", "TEST", "Welcome.");
    }

    //发送html页面
    @Test
    public void testHtmlMail() {
        Context context = new Context();
        context.setVariable("username", "*****");

        //第一个参数为templates目录下的要发送html文件的相对路径
        String content = templateEngine.process("/mail/demo", context);
        System.out.println(content);

        mailClient.sendMail("*********@qq.com", "HTML", content);
    }

}

    
    


   
Welcome,