spingboot @EnableScheduling

Posted 2020-12-31 jtlgb

springboot让开发更简单！springmvc中启用定时任务还得需要在xml中进行配置启用并且要配置扫描器，但是springboot只需要一个注解就可以。

@EnableScheduling

无需多余的jar依赖，所以pom不贴了

applaction.java

1. package com.sbm;
2.  
3.  import org.springframework.boot.SpringApplication;
4.  import org.springframework.boot.autoconfigure.SpringBootApplication;
5.  import org.springframework.scheduling.annotation.EnableScheduling;
6.   
7.  @SpringBootApplication
8.  @EnableScheduling
9.  public class Application {
10.   
11.  public static void main(String[] args) {
12.  SpringApplication.run(Application.class, args);
13.  }
14.  }

定时任务类AppCoreTask.java

1.  package com.sbm.scheduling;
2.   
3.  import org.springframework.scheduling.annotation.Scheduled;
4.  import org.springframework.stereotype.Component;
5.  import java.util.Date;
6.   
7.  @Component
8.  public class AppCoreTask {
9.   
10.  @Scheduled(cron = "0 53 15 * * ? ")
11.  public void tesk() {
12.  System.out.print("开启定时任务" + new Date());
13.  }
14.  }

要求在15:53分打印一句话

关于cron表达式的用法，可以在我的这篇文章里查看：Spring Task 中cron表达式整理记录

运行sb程序

1.  
   016-12-30 15:52:24.653 INFO 4204 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2.  
   2016-12-30 15:52:24.654 INFO 4204 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
3.  
   2016-12-30 15:52:24.722 INFO 4204 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
4.  
   2016-12-30 15:52:25.183 INFO 4204 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
5.  
   2016-12-30 15:52:25.212 INFO 4204 --- [ main] s.a.ScheduledAnnotationBeanPostProcessor : No TaskScheduler/ScheduledExecutorService bean found for scheduled processing
6.  
   2016-12-30 15:52:25.315 INFO 4204 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
7.  
   2016-12-30 15:52:25.326 INFO 4204 --- [ main] com.sbm.Application : Started Application in 7.124 seconds (JVM running for 8.234)
8.  
   开启定时任务Fri Dec 30 15:53:00 CST 2016

9.