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 02:27 181阅读 0赞

详细的错误信息如下：

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

@Component
    public class SpringContextJobUtil implements ApplicationContextAware  {
    
        private static ApplicationContext context;
    
        @Override
        @SuppressWarnings("static-access" )
        public void setApplicationContext(ApplicationContext contex)
                throws BeansException {
            // TODO Auto-generated method stub
            this.context = contex;
        }
        public static Object getBean(String beanName){
            return context.getBean(beanName);
        }
    
        public static String getMessage(String key){
            return context.getMessage(key, null, Locale.getDefault());
        }
    }

在job内直接调用静态方法

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

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h0MzE0MTU5_size_16_color_FFFFFF_t_70][]

参考的网站：

[https://www.bbsmax.com/A/obzbYvq6dE/][https_www.bbsmax.com_A_obzbYvq6dE]

[https://www.jianshu.com/p/aff9199b4416][https_www.jianshu.com_p_aff9199b4416]

[20200901162433770.png]: /images/20221123/206f770ab32848a9bb479dff2a3095f1.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h0MzE0MTU5_size_16_color_FFFFFF_t_70]: /images/20221123/ec558674b9f5414ea0c2f5c16411765d.png
[https_www.bbsmax.com_A_obzbYvq6dE]: https://www.bbsmax.com/A/obzbYvq6dE/
[https_www.jianshu.com_p_aff9199b4416]: https://www.jianshu.com/p/aff9199b4416