Springmvc Scheduled Task configuration in the

It is common to use timed tasks in a project, such as synchronizing or backing up data on a daily basis.

Prior to the development of C language, timed tasks were dispatched by writing a shell script and then adding it to a Linux timed task.

Now that you've used SPRINGMVC, it's easier to get together O (∩_∩) o

There are two ways to configure, I will tell each other, but after watching you must only choose the back of the kind, yes! I was in the back way.

The first configuration method: This is more complex, the configuration of the place a bit more, a little attention is not successful, the specific look at the code

<?XML version= "1.0" encoding= "UTF-8"?><Beansxmlns= "Http://www.springframework.org/schema/beans"Xmlns:mvc= "Http://www.springframework.org/schema/mvc"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"xmlns:p= "http://www.springframework.org/schema/p"Xmlns:context= "Http://www.springframework.org/schema/context"xsi:schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/ Spring-beans-3.0.xsd Http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/ Spring-mvc-3.1.xsd Http://www.springframework.org/schema/context http://www.springframework.org/schema/context/ Spring-context-3.0.xsd ">    <!--re-fetch tokens every one hours -    <!--1. The work class to invoke -    <BeanID= "Refreshaccesstokenjob"class= "Com.xiao.weixin.quartz.RefreshAccessToken"/>        <!--2. Define methods for calling objects and calling objects -    <BeanID= "Refreshaccesstokentask"class= "Org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">        <!--the class that is called -        < Propertyname= "TargetObject">            <refBean= "Refreshaccesstokenjob"/>        </ Property>        <!--calling methods in a class -        < Propertyname= "Targetmethod">            <value>Work</value>        </ Property>    </Bean>        <!--3. Define the trigger time -    <BeanID= "Refreshaccesstoken"class= "Org.springframework.scheduling.quartz.CronTriggerBean">        < Propertyname= "Jobdetail">            <refBean= "Refreshaccesstokentask"/>        </ Property>        <!--cron-expression -        < Propertyname= "Cronexpression">            <value>0 0 */2 * *?</value>        </ Property>    </Bean>            <!--4. Total Management class If you lazy-init= ' false ' then the container starts executing the scheduler -    <BeanID= "Startquertz"Lazy-init= "false"Autowire= "No"class= "Org.springframework.scheduling.quartz.SchedulerFactoryBean">        < Propertyname= "Triggers">            <List>                <refBean= "Refreshaccesstoken"/>            </List>        </ Property>    </Bean></Beans>

The second type of configuration: highly recommended

<?XML version= "1.0" encoding= "UTF-8"?><Beansxmlns= "Http://www.springframework.org/schema/beans"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"Xmlns:context= "Http://www.springframework.org/schema/context"Xmlns:tx= "Http://www.springframework.org/schema/tx"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/context http://www.springframework.org/schema/context/spring-context.xsd                Http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd Http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd ">    <Task:scheduled-tasks>        <task:scheduledref= "Quartztestbean"Method= "Quartzjobtestmethod"Cron= "*/5 * * * *?" />    </Task:scheduled-tasks>        <BeanID= "Quartztestbean"class= "Xiaochangwei.zicp.net.service.QuartzTestServiceImpl"/></Beans>

In this case, it is very simple to call the service interface implementation of the method in the class can be,

For example, my implementation class is this:

 package   Xiaochangwei.zicp.net.service;  import   java.util.Date;  import   Org.springframework.stereotype.Service;  import   Xiaochangwei.zicp.net.common.tools.DateUtil; @Service  public  class  Quartztestserviceimpl implements   Quartztestservice { public  void  Span style= "color: #000000;" > Quartzjobtestmethod () {System.out.println ( "timed Task execution:" + dateutil.getformatdate (new   Date ())); }}

Print a current time every five seconds

The results of the implementation are as follows:

How often the out-of-configuration task is executed is simple:

<ref= "Quartztestbean"  method= "Quartzjobtestmethod"  cron  = "*/5 * * * *?" />

The above represents a five-second execution.

There are a total of five *, from the point of travel after the seconds, minutes, when ....

How many seconds do once say, say how many points to execute once

cron= "* */2 * * * *?"  Are you right?   

This is not right, you want to change the previous star to 0    cron= "0 */2 * * *?" for two-point execution

Similarly  

Specific rules please Baidu cron so easy  !

Scheduled task configuration in Springmvc