Why does Spring batch application always output the same?

问题

Below is my code snippet that I am trying to execute in Spring batch:

@Bean
public Job ioSampleJob() throws Exception {
    return this.jobBuilderFactory.get("DKSHSpringBatchApplication")
            .incrementer(new RunIdIncrementer())
            .start(step1()).next(step2())
            .next(step3()).next(step4()).build();           
}

Can anyone please help how I can execute my batch job. It was working fine initially but after several run it is just giving the old response.

来源：https://stackoverflow.com/questions/61042136/why-does-spring-batch-application-always-output-the-same