接口 StoppableTasklet

public interface StoppableTasklet
extends Tasklet

An extension to the Tasklet interface to allow users to add logic for stopping a tasklet. It is up to each implementation as to how the stop will behave. The only guarantee provided by the framework is that a call to JobOperator.stop(long) will attempt to call the stop method on any currently running StoppableTasklet. The call to stop() will be from a thread other than the thread executing Tasklet.execute(org.springframework.batch.core.StepContribution, org.springframework.batch.core.scope.context.ChunkContext) so the appropriate thread safety and visibility controls should be put in place.