想要配置没有数据源的作业

Question

当在SpringbatchConfiguration类中配置了Datasource时，我可以运行Springbatch应用程序。但我不想配置数据源。所以我使用了ResourceLestransactionManager。请参阅下面我的配置类。有人指导我如何在不配置Datasource的情况下启动作业，将其作为Batchjob配置的一部分。

@Configuration
@EnableBatchProcessing
@EnableAutoConfiguration
//@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})
public class SprintgBatchConfiguration {

    /*@Autowired
    private DBConfiguration dbConfig;*/

    /*@Autowired
    private DataSource dataSource;

    @Autowired
    private DataSourceTransactionManager transactionManager;
    */
    //Tomcat relaated configuration//
    @Bean
    public MultipartConfigElement multipartConfigElement() {
        MultipartConfigFactory factory = new MultipartConfigFactory();
        factory.setMaxFileSize("124MB");
        factory.setMaxRequestSize("124MB");
        return factory.createMultipartConfig();
    }

    @Bean(name="csvjob")
    public Job job(JobBuilderFactory jobBuilderFactory,StepBuilderFactory stepBuilderFactory,ItemReader<List<CSVPojo>> itemReader,ItemProcessor<List<CSVPojo>,CsvWrapperPojo> itemProcessor,AmqpItemWriter<CsvWrapperPojo> itemWriter){
        Step step=stepBuilderFactory.get("ETL-CSV").<List<CSVPojo>,CsvWrapperPojo>chunk(100)
                .reader(itemReader)
                .processor(itemProcessor)
                .writer(itemWriter)
                .build();



        Job csvJob= jobBuilderFactory.get("ETL").incrementer(new RunIdIncrementer())
        .start(step).build();

        return csvJob;
    }

    @Bean(name="exceljob")
    public Job jobExcel(JobBuilderFactory jobBuilderFactory,StepBuilderFactory stepBuilderFactory,ItemReader<List<ExcelPojo>> itemReader,ItemProcessor<List<ExcelPojo>,ExcelWrapperPojo> itemProcessor,AmqpItemWriter<ExcelWrapperPojo> itemWriter){
        Step step=stepBuilderFactory.get("ETL-Excel").<List<ExcelPojo>,ExcelWrapperPojo>chunk(100)
                .reader(itemReader)
                .processor(itemProcessor)
                .writer(itemWriter)
                .build();

        Job ExcelJob= jobBuilderFactory.get("ETL-Excel").incrementer(new RunIdIncrementer())
        .start(step).build();

        return ExcelJob;
    }

    /*@Override
    public void setDataSource(DataSource dataSource){
        System.out.println("overriden");
    }*/

    /*@Bean
    public FlatFileItemReader<CSVPojo> fileItemReader(Resource resource){

        return null;
    }*/
    /*@Bean(name="dataSource")
    public DataSource dataSource() throws SQLException
    {


        //BasicDataSource  dataSource = new BasicDataSource();

        return dataSource;

    }*/
    @Bean(name="transactionManager")
    public ResourcelessTransactionManager transactionManager() throws SQLException{

        return new ResourcelessTransactionManager();

    }
    /*@Bean(name="transactionManager")
    public DataSourceTransactionManager transactionManager() throws SQLException{

        DataSourceTransactionManager transactionManager = new DataSourceTransactionManager(this.dataSource());
        return transactionManager;

    }*/


    /*@Bean
    public JobRepository jobRepository() throws Exception{
        JobRepositoryFactoryBean factoryBean = new JobRepositoryFactoryBean();
        factoryBean.setDatabaseType("ORACLE");
        factoryBean.setDataSource(dataSource);
        factoryBean.setTransactionManager(transactionManager);
        factoryBean.setIsolationLevelForCreate("ISOLATION_READ_UNCOMMITTED");
        return factoryBean.getObject();

    }*/

    @Bean
    public JobRepository jobRepository(ResourcelessTransactionManager transactionManager) throws Exception {
        MapJobRepositoryFactoryBean mapJobRepositoryFactoryBean = new MapJobRepositoryFactoryBean(transactionManager);
        mapJobRepositoryFactoryBean.setTransactionManager(transactionManager);
        return mapJobRepositoryFactoryBean.getObject();
    }


}

但是当我运行应用程序时，我的异常值低于异常值。

Answer 1

Spring靴适用于建筑生产级应用。当它用于构建Spring批处理应用程序时，它需要一个数据源来持久化Spring批处理元数据（请参见BATCH-2704)。

但您始终可以使用以下任一项：

• Spring Boot(H2、HSQL或Derby）支持的嵌入式数据源，只需将其添加到类路径中即可。此数据源将由Spring批处理自动拾取
• 或提供自定义的BatchConfigureer并使用MapJobRepository（请参阅此处）

希望这有帮助。