spring 使用注解来调度定时任务

1.在需要加载spring的配置文件里spring.xml / applicationContext.xml 添加

 xmlns:task="http://www.springframework.org/schema/task"
 xsi:schemaLocation="
 http://www.springframework.org/schema/task
 http://www.springframework.org/schema/task/spring-task-3.0.xsd

2.配置自动调度的包和定时开关

     <context:component-scan base-package="*" />
     <task:executor id="executor" pool-size="5" />
     <task:scheduler id="scheduler" pool-size="10" />
     <task:annotation-driven executor="executor" scheduler="scheduler" />

3.配置调度和注解调度

4.在web.xml配置里添加启动时要扫描的配置文件和监听

 <context-param>
    <param-name>contextConfigLocationparam-name>
    <param-value>/WEB-INF/applicationContext*.xmlparam-value>
  context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
  listener>

5.添加调度的包

6.类测试

 @Service
 public class demo {
     @Scheduled(cron="0/5 * * * * ? ")
     public void myTestWork(){

         System.out.println("ssss");
     }

 }