spring批处理作业如何知道其已完成，并在启动作业时收到通知

import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.JobExecutionListener;

public class CustomJobListener implements JobExecutionListener {

    @Override
    public void beforeJob(JobExecution jobExecution) {
        System.out.println("Job started.");
        System.out.println("Job name: " + jobExecution.getJobInstance().getJobName());
        System.out.println("Job start time: " + jobExecution.getStartTime());
        // 其他操作...
    }

    @Override
    public void afterJob(JobExecution jobExecution) {
        System.out.println("Job finished.");
        System.out.println("Job name: " + jobExecution.getJobInstance().getJobName());
        System.out.println("Job end time: " + jobExecution.getEndTime());
        System.out.println("Job status: " + jobExecution.getStatus());
        // 其他操作...
    }
}

<batch:job id="myJob">
    <batch:listeners>
        <batch:listener ref="customJobListener" />
    </batch:listeners>
    <!-- 配置作业步骤等信息 -->
</batch:job>

<bean id="customJobListener" class="com.example.CustomJobListener" />