<!--邮件javax.mail-->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-mail</artifactId>

        </dependency>

@Controller

public class MyController {

    @Autowired

    AsyncService asyncService;

    @ResponseBody

    @GetMapping("/hello")

    public String hello(){

        asyncService.hello();

        return "你好";

    }

}

@Service

public class AsyncService {

    @Async

    public void hello(){

        try {

            Thread.sleep(3000);

        } catch (Exception e) {

            e.printStackTrace();

        }

        System.out.println("数据正在处理。。。。。。");

    }

}

@EnableAsync //开启异步注解功能

@SpringBootApplication

public class SpringbootTaskApplication {

    public static void main(String[] args) {

        SpringApplication.run(SpringbootTaskApplication.class, args);

    }

}

spring.mail.username=110xxxxx@qq.com

#授权码

spring.mail.password=xxxxxxxxxxxxx

spring.mail.host=smtp.qq.com

#开启加密验证

spring.mail.properties.mail.smtp.ssl.enable=true

@SpringBootTest

class SpringbootTaskApplicationTests {

    @Autowired

    JavaMailSenderImpl mailSender;

    @Test

    void contextLoads() {

        SimpleMailMessage message=new SimpleMailMessage();

        message.setSubject("xx你好啊");

        message.setText("java这条路行下去");

        message.setTo("110xxxxx6@qq.com");

        message.setFrom("110xxxxx56@qq.com");

        mailSender.send(message);

    }

}