如何异步启动Spring Batch Job

我跟着spring batch doc并且无法让我的工作异步运行 .

所以我从Web容器运行Job，并通过REST endpoints 触发作业 .

I wanted to get the JobInstance ID 在完成整个工作之前将其传递回应 . 因此，他们可以稍后使用JobInstance ID检查作业的状态，而不是等待 . 但我无法让它发挥作用 . 下面是我试过的示例代码 . 请让我知道我错过了什么或错了什么 .

BatchConfig to make Async JobLauncher

@Configuration
public class BatchConfig {

    @Autowired
    JobRepository jobRepository;


    @Bean
    public JobLauncher simpleJobLauncher() throws Exception {
        SimpleJobLauncher jobLauncher = new SimpleJobLauncher();
        jobLauncher.setJobRepository(jobRepository);
        jobLauncher.setTaskExecutor(new SimpleAsyncTaskExecutor());
        jobLauncher.afterPropertiesSet();
        return jobLauncher;
    }
}

Controller

@Autowired
JobLauncher jobLauncher;

@RequestMapping(value="/trigger-job", method = RequestMethod.GET)
public Long workHard() throws Exception {
    JobParameters jobParameters = new JobParametersBuilder().
            addLong("time", System.currentTimeMillis())
            .toJobParameters();
    JobExecution jobExecution = jobLauncher.run(batchComponent.customJob("paramhere"), jobParameters);
    System.out.println(jobExecution.getJobInstance().getInstanceId());
    System.out.println("OK RESPONSE");
    return jobExecution.getJobInstance().getInstanceId();
}

而JobBuilder作为组件

@Component
public class BatchComponent {

    @Autowired
    private JobBuilderFactory jobBuilderFactory;

    @Autowired
    private StepBuilderFactory stepBuilderFactory;

    public Job customJob(String someParam) throws Exception {
        return jobBuilderFactory.get("personProcessor")
                .incrementer(new RunIdIncrementer()).listener(listener())
                .flow(personPorcessStep(someParam)).end().build();
    }


    private Step personPorcessStep(String someParam) throws Exception {
        return stepBuilderFactory.get("personProcessStep").<PersonInput, PersonOutput>chunk(1)
                .reader(new PersonReader(someParam)).faultTolerant().
                        skipPolicy(new DataDuplicateSkipper()).processor(new PersonProcessor())
                .writer(new PersonWriter()).build();
    }


    private JobExecutionListener listener() {
        return new PersonJobCompletionListener();
    }

    private class PersonInput {
        String firstName;

        public PersonInput(String firstName) {
            this.firstName = firstName;
        }

        public String getFirstName() {
            return firstName;
        }

        public void setFirstName(String firstName) {
            this.firstName = firstName;
        }
    }

    private class PersonOutput {
        String firstName;

        public String getFirstName() {
            return firstName;
        }

        public void setFirstName(String firstName) {
            this.firstName = firstName;
        }
    }

    public class PersonReader implements ItemReader<PersonInput> {
        private List<PersonInput> items;
        private int count = 0;

        public PersonReader(String someParam) throws InterruptedException {
            Thread.sleep(10000L); //to simulate processing
            //manipulate and provide data in the read method
            //just for testing i have given some dummy example
            items = new ArrayList<PersonInput>();
            PersonInput pi = new PersonInput("john");
            items.add(pi);
        }

        @Override
        public PersonInput read() {
            if (count < items.size()) {
                return items.get(count++);
            }
            return null;
        }
    }


    public class DataDuplicateSkipper implements SkipPolicy {

        @Override
        public boolean shouldSkip(Throwable exception, int skipCount) throws SkipLimitExceededException {
            if (exception instanceof DataIntegrityViolationException) {
                return true;
            }
            return true;
        }
    }


    private class PersonProcessor implements ItemProcessor<PersonInput, PersonOutput> {

        @Override
        public PersonOutput process(PersonInput item) throws Exception {
            return null;
        }
    }

    private class PersonWriter implements org.springframework.batch.item.ItemWriter<PersonOutput> {
        @Override
        public void write(List<? extends PersonOutput> results) throws Exception {
            return;
        }
    }

    private class PersonJobCompletionListener implements JobExecutionListener {
        public PersonJobCompletionListener() {
        }

        @Override
        public void beforeJob(JobExecution jobExecution) {

        }

        @Override
        public void afterJob(JobExecution jobExecution) {
            System.out.println("JOB COMPLETED");
        }
    }
}

主功能

@SpringBootApplication
@EnableBatchProcessing
@EnableScheduling
@EnableAsync
public class SpringBatchTestApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringBatchTestApplication.class, args);
    }
}

我正在使用基于注释的配置，并使用gradle与下面的批处理包 .

compile('org.springframework.boot:spring-boot-starter-batch')

如果需要更多信息，请告诉我 . 我找不到任何运行这个常见用例的例子 .

谢谢你的时间 .