Spring+quartz How to implement timed tasks (episode)

Reprint Please specify source: http://blog.csdn.net/l1028386804/article/details/46376093

1, the Scheduler configuration

<bean class= "Org.springframework.scheduling.quartz.SchedulerFactoryBean" >         <property name= "triggers" >             <list>                <ref bean= "Testtrigger"/>             </list>         </property>         < Property Name= "Autostartup" value= "true"/>  </bean>  

Description: Scheduler contains a list of trigger, each trigger represents a job. 2, the trigger configuration

<bean id= "Testtrigger" class= "Org.springframework.scheduling.quartz.CronTriggerBean" >         <property Name = "Jobdetail" ref= "Testjobdetail"/>         <property name= "cronexpression" value= "*/1 * * * * *?" /><!--triggered once every 1 seconds-  

Description

1) Cron expression format: Second-time time-of-year (optional).

Allowed special characters for field name allowed values

Seconds 0-59,-*/

Sub 0-59,-*/

Hours 0-23,-*/

Day 1-31,-*? /L W C

Month 1-12 or JAN-DEC,-*/

How many weeks 1-7 or SUN-SAT,-*? /L C #

Year (optional field) empty, 1970-2099,-*/

“?” Character: Represents an indeterminate value

"," character: Specify a number of values

"-" character: Specifies the range of a value

"/" character: Specifies the increment of a value. N/m means starting with N, increasing m each time

"L" character: Used on the last day of the one month, used in the week to represent the last one weeks of the month X

"W" character: Specifies the most recent weekday from the given date (Monday to Friday)

The "#" character: The number of weeks that the month is X. 6#3 said the 3rd Friday of the Month

2) Cron Expression Example:

Execute once every 5 seconds: */5 * * * *?

Executes every 1 minutes: 0 */1 * * *?

Executed at 23 o ' Day: 0 0 23 * *?

Once daily 1 o'clock in the morning: 0 0 1 * *?

Every month, 1th, 1 o'clock in the morning, once: 0 0 1 1 *?

The last day of the month is executed at 23 points: 0 0 L *?

Once a week, Sunday 1 o'clock in the morning: 0 0 1? * L

At 26, 29, 33, execute once: 0 26,29,33 * * *?

Every day 0, 13, 18, 21 points are executed once: 0 0 0,13,18,21 * *?

3, the Jobdetail configuration

<bean id= "Testjobdetail" class= "Org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean" >           <property name= "TargetObject" ref= "Testjob"/>          <property name= "Targetmethod" value= "Execute"/>          <property name= "concurrent" value= "false"/>        <!--whether the task is allowed to execute concurrently. When the value is false, it means that you must wait until the previous thread has finished processing before starting a new thread-  </bean>  

4, the Business class configuration

<bean id= "Testjob" class= "Com.cjm.web.service.quartz.TestJob"/>

5. Business Class Source Code

public class Testjob {public      void execute () {          try{                //...         } catch (Exception ex) {               ex.printstacktrace ();}}  }  

Description: The business class does not need to inherit any parent class, nor does it need to implement any interfaces, just a common Java class.

Attention:

Two points to note when you configure and quartz integrated content in spring

1, in <Beans> can not set default-lazy-init= "true", otherwise the scheduled task does not trigger, if not explicitly indicate the value of Default-lazy-init, the default is False.

2, in <Beans> can not set the Default-autowire= "ByName" Properties, Otherwise the org.springframework.beans.factory.BeanCreationException error will be reported in the background, so that it cannot be injected automatically through the bean name and must be injected by explicit reference

Spring+quartz How to implement timed tasks (episode)