spring3.0设置定时任务

今天做个小需求，需要用到定时器。 

就把以前写过的配置文件模板直接复制过来，又顺手点进去看了一下源码，发现TimerFactoryBean、ScheduledTimerTask都已经被标记成@Deprecated了 

@Deprecated
 public class TimerFactoryBean implements FactoryBean<Timer>, BeanNameAware, InitializingBean, DisposableBean

@Deprecated
public class TimerFactoryBean implements FactoryBean<Timer>, BeanNameAware, InitializingBean, DisposableBean

 

@Deprecated
 public class ScheduledTimerTask

@Deprecated
public class ScheduledTimerTask

那肯定就不乐意用了，就上网找了找spring3.0之后的新用法，果然是有变化，而且比以前简单了很多，在这里记录一下 

我记得以前那种做法，业务类是要继承自TimerTask才行的，现在就不用了，是一个pojo就可以 

public class TestService {

     private Logger logger = LoggerFactory.getLogger(TestService.class);

     public void sayHello() {
         System.out.println("hello world");
    }

     public void sayBye() {
         System.out.println("bye world");
    }

}

public class TestService {

    private Logger logger = LoggerFactory.getLogger(TestService.class);

    public void sayHello() {
        System.out.println("hello world");
    }

    public void sayBye() {
        System.out.println("bye world");
    }

}

然后配置文件也更简单 

<beans xmlns="http://www.springframework.org/schema/beans"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:task="http://www.springframework.org/schema/task"
     xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/task
     http://www.springframework.org/schema/task/spring-task-3.0.xsd">

     <bean id="testService" class="com.xxx.spring.business.TestService" />

     <task:scheduled-tasks>
         <task:scheduled ref="testService" method="sayHello" cron="3/11 * * * * ?" />
         <task:scheduled ref="testService" method="sayBye" cron="7/13 * * * * ?" />
     </task:scheduled-tasks>

 </beans>

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:task="http://www.springframework.org/schema/task"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/task
    http://www.springframework.org/schema/task/spring-task-3.0.xsd">

    <bean id="testService" class="com.xxx.spring.business.TestService" />

    <task:scheduled-tasks>
        <task:scheduled ref="testService" method="sayHello" cron="3/11 * * * * ?" />
        <task:scheduled ref="testService" method="sayBye" cron="7/13 * * * * ?" />
    </task:scheduled-tasks>

</beans>

只要用一个新增的<task:scheduled-tasks>就可以了 

就是有一点要注意一下，新的时间配置，是类似于cron的语法，比以前强大很多。 

不过我只用到了第一个参数：3/11，表示延迟3秒启动，间隔11秒；7/13表示延迟7秒启动，间隔13秒