Question

我正在学习如何使用SpringBatch撰写SpringBoot。

示例我的春季批次如下所示

  <batch:job id="job" >
            <batch:step id="deleteFile" next="generateFile">
                <batch:tasklet ref="fileDeleting" />
            </batch:step>
            <batch:step id="generateFile" next="emailFile" >
                <batch:tasklet transaction-manager="transactionManager">
                    <batch:chunk reader="reader" writer="writer" processor="processor" commit-interval="10" />
                </batch:tasklet>
            </batch:step>
            <batch:step id="emailFile">
                <batch:tasklet ref="emailTasklet" />
            </batch:step> 
            <batch:listeners>
                <batch:listener ref="jobListener" />
            </batch:listeners>
        </batch:job>

正如您所看到的，在读者被调用之前，将首先调用deleteFile。完成generateFile后，emailFile将被调用。

这就是generateFile转向SpringBoot时的样子。

@Configuration
public class BatchConfig {

    @Autowired
    public JobBuilderFactory jobBuilderFactory;

    @Autowired
    public StepBuilderFactory stepBuilderFactory;

    @Bean
    public Job job() {

        return jobBuilderFactory.get("job")
                .incrementer(new RunIdIncrementer())
                .flow(step1())
                .end()
                .build();
    }

    @Bean
    public Step step1() {
        System.out.println("In step1");
        return stepBuilderFactory.get("step1")
                .<String, String>chunk(1)
                .reader(new Reader())
                .processor(new Processor())
                .writer(new Writer())
                .build();
    }
}

我如何让deleteFile和emailFile参与SpringBoot？

Answer 1

您可以像面向项目的步骤一样声明tasklet步骤，例如：

@Configuration
public class BatchConfig {

    @Autowired
    private JobBuilderFactory jobBuilderFactory;

    @Autowired
    private StepBuilderFactory stepBuilderFactory;

    @Bean
    public Step step1() {
        return stepBuilderFactory.get("step1")
                .tasklet(deleteFileTasklet())
                .build();
    }

    @Bean
    public Step step2() {
        return stepBuilderFactory.get("step2")
                .<String, String>chunk(1)
                .reader(new Reader())
                .processor(new Processor())
                .writer(new Writer())
                .build();
    }

    @Bean
    public Step step3() {
        return stepBuilderFactory.get("step3")
                .tasklet(emailTasklet())
                .build();
    }

    @Bean
    @StepScope
    public Tasklet deleteFileTasklet() {
        return null; // TODO implement delete file tasklet
    }

    @Bean
    @StepScope
    public Tasklet emailTasklet() {
        return null; // TODO implement email tasklet
    }

    @Bean
    public Job job() {
        return jobBuilderFactory.get("job")
                .incrementer(new RunIdIncrementer())
                .start(step1())
                .next(step2())
                .next(step3())
                .build();
    }

}

我希望这会有所帮助。

使用SpringBoot编写SpringBatch

1 个答案: