Spring quartz Job cannot be dependency injected, and Spring integrated quartz Job tasks cannot be injected
Spring4 integrates the Job task in quartz2.2.3 that cannot be injected using @Autowired
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©Copyright Sweet Potato Yao August 29, 2017
http://fanshuyao.iteye.com/
1. Problem description:
When using Spring to integrate quartz to implement dynamic tasks, when you want to use a service in the job timing task, you cannot inject it directly by annotating @Component and @Autowired, and the obtained object is Null. Such as the following code:
@Component
@PersistJobDataAfterExecution
@DisallowConcurrentExecution
public class TicketSalePriceLessThanLowestPriceJob implements Job{
@Autowired
private XxxService xxxService;
}
Second, the solution:
1. Add a custom class (CustomJobFactory), inherit SpringBeanJobFactory, the code is as follows:
import org.quartz.spi.TriggerFiredBundle;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.AutowireCapableBeanFactory;
import org.springframework.scheduling.quartz.SpringBeanJobFactory;
public class CustomJobFactory extends SpringBeanJobFactory{
@Autowired
private AutowireCapableBeanFactory capableBeanFactory;
@Override
protected Object createJobInstance(TriggerFiredBundle bundle) throws Exception {
// call the method of the parent class
Object jobInstance = super.createJobInstance(bundle);
//do the injection
capableBeanFactory.autowireBean(jobInstance);
return jobInstance;
}
}
2. Configure the CustomJobFactory in the spring.xml file as follows:
<bean id="customJobFactory" class="cn.imovie.manage.task.job.CustomJobFactory"></bean>
3. Inject the custom CustomJobFactory into org.springframework.scheduling.quartz.SchedulerFactoryBean, as follows:
<property name="jobFactory" ref="customJobFactory"></property>
The complete code is as follows:
<!-- Scheduled task configuration start -->
<bean id="scheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!--Optional, QuartzScheduler updates the existing Job when it starts, so that the corresponding records in the qrtz_job_details table do not need to be deleted every time the targetObject is modified -->
<property name="overwriteExistingJobs" value="true" />
<!--Required, QuartzScheduler delays startup, QuartzScheduler restarts after application startup-->
<property name="startupDelay" value="10" />
<!-- Set autostart-->
<property name="autoStartup" value="true" />
<property name="jobFactory" ref="customJobFactory"></property>
<property name="applicationContextSchedulerContextKey" value="applicationContextKey" />
<property name="configLocation" value="classpath:spring-quartz.properties" />
</bean>
<!-- Scheduled task configuration end -->
4. Then you can use @Autowired to inject the service in the Job task class.
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©Copyright Sweet Potato Yao August 29, 2017
http://fanshuyao.iteye.com/