The configuration of spring timed tasks uses

Spring's scheduled task configuration is divided into three steps:
1. Define Tasks
2. Task execution Policy configuration
3. Start the Task

1. Define Tasks

<!--methods to be executed on a timed basis - <BeanID= "Testtaskjob"class= "Org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean"> < Propertyname= "TargetObject"> <!--specifies the class of methods to be executed on a timed basis, defining a timed task as a bean - <refBean= "Testtask" /> </ Property> < Propertyname= "Targetmethod"> <!--Specify a method for timed execution - <value>Execute</value> </ Property> < Propertyname= "Concurrent"> <!--Specifies that the target is encapsulated as a stateful task, a stateful task cannot be executed concurrently, and a stateless task can execute concurrently - <value>False</value> </ Property> </Bean> 

2. Task Execution Policy configuration 

(1) Specify the recurrence interval for the scheduled task

<!--Scheduling Time Settings - <BeanID= "Testtaskjobtrigger"class= "Org.springframework.scheduling.quartz.SimpleTriggerBean"> < Propertyname= "Jobdetail"> <refBean= "Testtaskjob" /> </ Property> <!--delay Start time, Unit Ms - < Propertyname= "Startdelay"value= "60000"></ Property> <!--Repeat interval time, unit Ms - < Propertyname= "Repeatinterval"value= "60000"> </ Property> </Bean> 

(2) Tasks performed on a periodic basis

 <!--Define trigger Time -     <BeanID= "Dotime"class= "Org.springframework.scheduling.quartz.CronTriggerBean">         < Propertyname= "Jobdetail">             <refBean= "Testtaskjob" />         </ Property>         <!--cron expression, which is executed 10 point 42 per day -         < Propertyname= "Cronexpression">             <value>0 42 10 * *?</value>         </ Property>     </Bean> 

3. Start the task

<!--Start Work - <BeanLazy-init= "false"class= "Org.springframework.scheduling.quartz.SchedulerFactoryBean"> < Propertyname= "Triggers"> <List> <!--Multiple timer task triggers are added here, corresponding to the Bean ID for step 2nd - <refLocal= "Testtaskjobtrigger" /> </List> </ Property> </Bean> 

At this point, when the system starts, it can load the scheduled task and execute it according to the specified timing policy.

For one-time scheduled tasks, there are generally the following forms: (1) using the Spring init method, (2) deciding whether to load when used, and ensuring that it is executed only once.

Basic use of cron expressions:

Special characters allowed for field allowed values
Seconds 0-59,-*/
Sub 0-59,-*/
Hours 0-23,-*/
Date 1-31,-*? /L W C
Month 1-12 or JAN-DEC,-*/
Week 1-7 or Sun-sat,-*? /L C #
Year (optional) leave blank, 1970-2099,-*/
Meaning of an expression
"0 0 12 * *?" trigger 12 o'clock noon every day.
"0 15 10?" * * "trigger 10:15 every day"
"0 15 10 * *?" Daily 10:15 Trigger
"0 15 10 * *?" * "10:15 per day" trigger
"0 15 10 * *?" 2005 "2005-year daily 10:15 Trigger
"0 * 14 * *?" triggers every 1 minutes from 2 o'clock in the afternoon to 2:59 daily
"0 0/5 14 * *?" triggers every 5 minutes from 2 o'clock in the afternoon to 2:55 daily
"0 0/5 14,18 * *?" triggers every 5 minutes from 2 o'clock in the afternoon to 2:55 daily and from 6 o'clock in the afternoon to 6:55
"0 0-5 14 * *?" triggers every 1 minutes from 2 o'clock in the afternoon to 2:05 daily
"0 10,44 14?" 3 WED "2:10 and 2:44 triggers in Wednesday of every March
"0 15 10?" * Mon-fri "Monday to Friday 10:15 trigger
"0 15 10 15 *?" 15th 10:15 per month
"0 L *?" 10:15 on the last day of the month
"0 15 10?" * 6L "Last month of Friday 10:15 trigger
"0 15 10?" * 6L 2002-2005 "2002 to 2005 the last of the monthly Friday 10:15 trigger
"0 15 10?" * 6#3 "Monthly third Friday 10:15 trigger
Every morning at 6.
0 6 * * *
Every two hours
0 */2 * * *
Every two hours between 11 o'clock and 8 in the morning, eight in the morning.
0 23-7/2,8 * * *
Every month, number 4th and Monday to Sunday, three a.m., 11 .
0 4 * 1-3
January 1 morning, 4.
0 4 1 1 *

The configuration of spring timed tasks uses