how to stop/terminate the step in execution listeners in spring batch?

问题

I had file name validation in step execution listener . If the file name is not valid i want to terminate/stop the step from proceeding into reader . how to achieve this in sprig batch?

回答1:

The listener is the wrong place to do data validation. use a processor and throw an appropriate exception if you have to validate single data items.

Use a tasklet step prior to a processing step if you want to validate more "general" aspects like the filename or the presence of a file or any other condition that is not part of single item.

回答2:

Hansjoerg's answer is a valid point. Still as for how to achieve what you're trying to do, here's an example :

@Override
public ExitStatus afterStep(StepExecution stepExecution) {
    return ExitStatus.FAILED;
}

This will return an ExitStatus FAILED that you can use on your <next on="" /> tag to prevent from going into the reader.

回答3:

The best choice to solve your problem is to use a JobExecutionDecider where you perform filename validation and stop job or move to next step

来源：https://stackoverflow.com/questions/34005152/how-to-stop-terminate-the-step-in-execution-listeners-in-spring-batch