SpringBoot发送邮箱验证码功能

 spring:
  mail:
   username: 1963342385@qq.com
   password: yqc...fchj
   host: smtp.qq.com

@RunWith(SpringRunner.class)
@SpringBootTest
public class ExchangeOfLearningPlatformApplicationTests {
  @Autowired
  JavaMailSenderImpl mailSender;
  private String emailServiceCode;

  public void test(){
    emailServiceCode = "1234";
    SimpleMailMessage message = new SimpleMailMessage();
    message.setSubject("注册验证码");
    message.setText("注册验证码是：" + emailServiceCode);
    message.setFrom("1111111111@qq.com");
    mailSender.send(message);
  }
}