Quartz：ERROR threw an unhandled Exception（Quartz定时任务Job中无法注入spring bean的解决方案）

清疚 2022-12-03 02:27 287阅读 0赞

详细的错误信息如下：

  1. -- ::13.366 [DefaultQuartzScheduler_Worker-] ERROR org.quartz.core.JobRunShell: - Job group1.job1 threw an unhandled Exception:
  2.  java.lang.NullPointerException
  3.      at com.starunion.java.service.timer.JobEndConference.execute(JobEndConference.java:) ~[bin/:?]
  4.      at org.quartz.core.JobRunShell.run(JobRunShell.java:) [quartz-2.2..jar:?]
  5.      at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:) [quartz-2.2..jar:?]
  6.  -- ::13.374 [DefaultQuartzScheduler_Worker-] ERROR org.quartz.core.ErrorLogger: - Job (group1.job1 threw an exception.
  7.  org.quartz.SchedulerException: Job threw an unhandled exception.
  8.      at org.quartz.core.JobRunShell.run(JobRunShell.java:) [quartz-2.2..jar:?]
  9.      at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:) [quartz-2.2..jar:?]
  10.  Caused by: java.lang.NullPointerException
  11.      at com.starunion.java.service.timer.JobEndConference.execute(JobEndConference.java:) ~[bin/:?]
  12.      at org.quartz.core.JobRunShell.run(JobRunShell.java:) ~[quartz-2.2..jar:?]

说说我的解决过程：

一、原因很明显：调用了null对象。

但是这是因为我调用了service的方法

20200901162433770.png

我用的方法

静态工具类

创建工具类SpringContextJobUtil，实现ApplicationContextAware接口,此工具类会在spring容器启动后，自动加载，使用其提供的getBean方法获取想要的bean即可

  1. @Component
  2. public class SpringContextJobUtil implements ApplicationContextAware  {
  4.     private static ApplicationContext context;
  6.     @Override
  7.     @SuppressWarnings("static-access" )
  8.     public void setApplicationContext(ApplicationContext contex)
  9.             throws BeansException {
  10.         // TODO Auto-generated method stub
  11.         this.context = contex;
  12.     }
  13.     public static Object getBean(String beanName){
  14.         return context.getBean(beanName);
  15.     }
  17.     public static String getMessage(String key){
  18.         return context.getMessage(key, null, Locale.getDefault());
  19.     }
  20. }

在job内直接调用静态方法

  1. testSuitService = (TestSuitService) SpringContextJobUtil.getBean("testSuitService");

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参考的网站：

https://www.bbsmax.com/A/obzbYvq6dE/

https://www.jianshu.com/p/aff9199b4416

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