@Configuration
@EnableBatchProcessing
public class ParameterDemo implements StepExecutionListener {

    @Autowired
    private JobBuilderFactory jobBuilderFactory;

    @Autowired
    private StepBuilderFactory stepBuilderFactory;

    //創(chuàng)建一個成員變量
    private Map<String,JobParameter> parameters;

    /**
     * 創(chuàng)建job
     * @return
     */
    @Bean(value = "parameterDemoJob1")
    public Job  parameterDemoJob1(){
        return jobBuilderFactory.get("parameterDemoJob1")
                .start(parameterDemoStep1())
                .build();
    }

    /**
     * 創(chuàng)建step
     * @return
     */
    @Bean(value = "parameterDemoStep1")
    public Step parameterDemoStep1() {
        return stepBuilderFactory.get("parameterDemoStep1")
                .listener(this)
                .tasklet(new Tasklet() {
                    @Override
                    public RepeatStatus execute(StepContribution stepContribution, ChunkContext chunkContext) throws Exception {
                        System.out.println("info的值為："+parameters.get("info"));
                        return RepeatStatus.FINISHED;
                    }
                }).build();
    }

    /**
     * 對step做監(jiān)聽,在監(jiān)聽之前給Job傳遞參數
     * @param stepExecution
     */

    @Override
    public void beforeStep(StepExecution stepExecution) {
        this.parameters = stepExecution.getJobParameters().getParameters();
    }

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