1、异步任务
开启
@SpringBootApplication
@EnableAsync
public class Demo14Application {
public static void main(String[] args) {
SpringApplication.run(Demo14Application.class, args);
}
}
使用
@Async
public void hello(){
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
2、邮件任务
依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
配置
[email protected]
spring.mail.password=seamfpgsfjthdhgc
spring.mail.host=smtp.qq.com
#开启加密验证
spring.mail.properties.mail.smtp.ssl.enable=true
使用
@Test
void contextLoads() {
//发送一个简单的邮件
SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
simpleMailMessage.setSubject("Yan");
simpleMailMessage.setText("hello Yan");
simpleMailMessage.setFrom("[email protected]");
simpleMailMessage.setTo("[email protected]");
mailSender.send(simpleMailMessage);
}
@Test
void contextLoads1() throws MessagingException {
//发送一个复杂的邮件
MimeMessage mimeMessage = mailSender.createMimeMessage();
MimeMessageHelper helper = new MimeMessageHelper(mimeMessage,true);
helper.setSubject("Yan");
helper.setText("hello Yan");
helper.setFrom("[email protected]");
helper.setTo("[email protected]");
helper.addAttachment("20201022160116.png", new File("C:\\Users\\Alex Mercer\\Desktop\\20201022160116.png"));
mailSender.send(mimeMessage);
}
3、定时任务
TaskExecutor
TaskScheduler
开启
@SpringBootApplication
@EnableScheduling
public class Demo14Application {
public static void main(String[] args) {
SpringApplication.run(Demo14Application.class, args);
}
}
使用
@Service
public class HelloService {
@Scheduled(cron = "0/2 * * * * ?")
public void hello(){
System.out.println("hello");
}
}