Spring Batch步骤不立即提交事务

@Configuration
@EnableBatchProcessing
public class BatchConfiguration {

    @Autowired
    private JobBuilderFactory jobBuilderFactory;

    @Autowired
    private StepBuilderFactory stepBuilderFactory;

    @Autowired
    private DataSource dataSource;

    @Bean
    public Step myStep() {
        return stepBuilderFactory.get("myStep")
                .transactionAttribute(transactionAttribute())
                .tasklet(myTasklet())
                .build();
    }

    @Bean
    public Tasklet myTasklet() {
        return (contribution, chunkContext) -> {
            // 执行步骤的逻辑
            return RepeatStatus.FINISHED;
        };
    }

    @Bean
    public DefaultTransactionAttribute transactionAttribute() {
        DefaultTransactionAttribute attribute = new DefaultTransactionAttribute();
        attribute.setPropagationBehavior(Propagation.NOT_SUPPORTED.value());
        return attribute;
    }

    @Bean
    public Job myJob() {
        return jobBuilderFactory.get("myJob")
                .start(myStep())
                .build();
    }
}