SpringBoot 异步、邮件、定时任务

异步任务

Springboot09EmailApplication.java

@EnableAsync//开启异步注解功能
@SpringBootApplication
public class Springboot09EmailApplication {

    public static void main(String[] args) {
        SpringApplication.run(Springboot09EmailApplication.class, args);
    }

}

AsyncService.java

@Service
public class AsyncService {
    //告诉spring 这是一个异步的方法
    @Async
    public void hello(){
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("三秒已走完");
    }
}

邮件发送

pom.xml

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

application.properties

spring.mail.username=123456789@qq.com
spring.mail.password=agdfsyfvdfdvbcfs
spring.mail.host=smtp.qq.com
#开启加密验证
spring.mail.properties.smtl.ssl.enable=true

Springboot09EmailApplicationTests.java

@SpringBootTest
class Springboot09EmailApplicationTests {
    @Autowired
    JavaMailSenderImpl mailSender;
    @Test
    void contextLoads() {
        //一个简单的邮件
        SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
        simpleMailMessage.setSubject("小狂神你好呀~");
        simpleMailMessage.setText("谢谢你的狂神说JAVA系列~");
        simpleMailMessage.setTo("fasondao@qq.com");
        simpleMailMessage.setFrom("beifason@qq.com");
        mailSender.send(simpleMailMessage);
    }
    @Test
    void contextLoads2() throws MessagingException {
        //一个简单的邮件
        MimeMessage mimeMessage = mailSender.createMimeMessage();
        //组装
        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
        //正文
        helper.setSubject("小狂神你好呀~plus");
        helper.setText("<p style='color:red'>谢谢你的狂神说JAVA系列~</p>",true);
        //附件
        helper.addAttachment("1.jpg",new File("D:\\图片\\1.jpg"));
        helper.addAttachment("2.jpg",new File("D:\\图片\\2.gif"));
        helper.setTo("fasondao@qq.com");
        helper.setFrom("beifason@qq.com");
        mailSender.send(mimeMessage);
    }

}

任务调度

Springboot09EmailApplication.java

@EnableScheduling//开启定时功能的注解
@SpringBootApplication
public class Springboot09EmailApplication {

    public static void main(String[] args) {
        SpringApplication.run(Springboot09EmailApplication.class, args);
    }

}

ScheduleService.java

@Service
public class ScheduleService {
    //在一个特点的时间执行这个方法
    //cron表达式
    //秒 分 时 日 月 周几
    @Scheduled(cron = "0/10 * * * * ?")
    public void hello(){
        System.out.println("hello,你被执行了~");
    }
}