使用石英和弹簧的动态cron作业

Question

I want to schedule a cron-job using quartz+spring.

<context:component-scan base-package="com.hotelscrapper" /> <!--hotelServiceImpl-->
<bean id="ScheduleScrapJob" class="com.hotelscrapper.util.ScheduleScrapJob">
<property name="hotelService" ref="hotelServiceImpl">
</property>
</bean>

public class ScheduleScrapJob extends QuartzJobBean {
private HotelService hotelService;
public void setHotelService(HotelService hotelService){
    this.hotelService = hotelService;
}   
@Override
protected void executeInternal(JobExecutionContext arg0) throws JobExecutionException {
    hotelService.reScrapWorker();
}

}

hotelService is null . I do not understand how i can link hotelService to service hotelServiceImpl .

Solution: hotelService is to be static. It works fine.

Answer 1

If you using component scanning, you must add the necessary annotations to your classes:

@Component
public class ScheduleScrapJob extends QuartzJobBean {
  @Autowired
  private HotelService hotelService;

  @Override
  protected void executeInternal(JobExecutionContext arg0) throws JobExecutionException {
    hotelService.reScrapWorker();
  }

}

With this setup, you will not need the hotel service setter in the ScheduleScrapJob class and your xml configuration will simply be:

<context:component-scan base-package="com.hotelscrapper" />

This assumes all the classes you need scanned are in the package tree under com.hotelscrapper.

Answer 2

You need to define something like this:

<bean id="hotelServiceImpl" class="com.hotelscrapper.HotelServiceImpl">
  <!-- some properties here -->
</bean>

As you did ref="hotelServiceImpl" in the ScheduleScrapJob bean definition, Spring will take this other hotelServiceImpl bean and set it into your ScheduleScrapJob bean, particularly into its hotelService property.