Spring batch spring批处理一次只运行一个作业实例，并将其创建为队列

一次仅在作业实例上运行此确定：

}

...

我不会停止作业，而是创建一个队列

可以使用spring集成吗

我想 但它不起作用

public class jobMailListener implements JobExecutionListener {

// active JobExecution, used as a lock.
private JobExecution _active;


public void beforeJob(JobExecution jobExecution) {
    // create a lock
    synchronized (jobExecution) {
        if (_active != null && _active.isRunning()) {
             //***************************//
            // Here create/storage in queue it up ? 
            //****************************//
            jobExecution.stop();
        } else {
            _active = jobExecution;
        }
    }
}

public void afterJob(JobExecution jobExecution) {
    // release the lock
    synchronized (jobExecution) {
        if (jobExecution == _active) {
            _active = null;
        }
    }
}

<batch:job id="envoiMail" restartable="true">
    <batch:listeners><batch:listener ref="jobMailListener"/>
    <batch:step id="prepareData">...