quartz autowired null Service无法注解，Job无法执行

Posted 2022-12-02 mr_raptor

类似所谓的解决方案很多，但是大部分都试了下，不太好用。

最终通过，Stackoverflow解决：

https://stackoverflow.com/questions/48577810/how-to-autowired-in-quartz?r=SearchResults

原因，quartz和Spring容器上下文context不在一起，而job里需要通过autowired来获得Service对象进行业务操作。

1. 先通过BeanFactory来将两个context打通，使得quartz使用Spring的context

@Component
public final class ApplicationContextHolder extends SpringBeanJobFactory implements ApplicationContextAware 

  private static ApplicationContext context;

  private transient AutowireCapableBeanFactory beanFactory;

  @Override
  public void setApplicationContext(ApplicationContext ctx) throws BeansException 
    beanFactory = ctx.getAutowireCapableBeanFactory();
    context = ctx;
  

  @Override
  protected Object createJobInstance(final TriggerFiredBundle bundle) throws Exception 
    final Object job = super.createJobInstance(bundle);
    beanFactory.autowireBean(job);
    return job;
  

  public static ApplicationContext getContext() 
    return context;
  

2. 在Config里，使用Spring Context创建JobFactory

@Configuration
public class QuartzSchedulerConfiguration 

  @Autowired
  private ApplicationContext applicationContext;

  /**
   * Create the job factory bean
   * @return Job factory bean
   */
  @Bean
  public JobFactory jobFactory() 
    ApplicationContextHolder jobFactory = new ApplicationContextHolder();
    jobFactory.setApplicationContext(applicationContext);
    return jobFactory;
  

  /**
   * Create the Scheduler Factory bean
   * @return scheduler factory object
   */
  @Bean
  public SchedulerFactoryBean schedulerFactory() 
    SchedulerFactoryBean factory = new SchedulerFactoryBean();
    factory.setAutoStartup(true);
    factory.setSchedulerName("My Scheduler");
    factory.setOverwriteExistingJobs(true);
    factory.setJobFactory(jobFactory());
    return factory;