spring boot(spring batch)配置禁用自动创建数据库

Posted 2023-02-26

【中文标题】spring boot(spring batch)配置禁用自动创建数据库

【英文标题】：Spring boot ( spring batch) configuration disable the automatic creation of the database

【发布时间】：2017-01-16 13:01:36

【问题描述】：

我将 Spring-boot 与 Spring-Batch 一起使用，我的 application.properties 中有数据源配置，但我不希望 Spring Batch 在我的数据库中创建表，因此我使用以下配置

@Configuration
@EnableBatchProcessing
public class BatchConfiguration 

@Autowired
public JobBuilderFactory jobBuilderFactory;

@Autowired
public StepBuilderFactory stepBuilderFactory;

@Bean
public Job myJob() 
    return jobBuilderFactory.get("myJob").incrementer(new RunIdIncrementer())
            .listener(listener()).flow(step2()).end().build();


@Bean
public JobRegistryBeanPostProcessor jobRegistryBeanPostProcessor(final JobRegistry jobRegistry) 
    JobRegistryBeanPostProcessor jobRegistryBeanPostProcessor = new JobRegistryBeanPostProcessor();
    jobRegistryBeanPostProcessor.setJobRegistry(jobRegistry);
    return jobRegistryBeanPostProcessor;


@Bean
public Step step2() 
    LOGGER.info("step2");
    return stepBuilderFactory.get("step2").tasklet(new PurchaseStatusBatch()).build();


@Bean
public JobOperator jobOperator() throws Exception 
    SimpleJobOperator jobOperator = new SimpleJobOperator();
    jobOperator.setJobExplorer(jobExplorer());
    jobOperator.setJobLauncher(jobLauncher());
    jobOperator.setJobRegistry(jobRegistry());
    jobOperator.setJobRepository(getJobRepo());
    return jobOperator;


@Bean
public JobRegistry jobRegistry() 
    return new MapJobRegistry();


@Bean
public JobExplorer jobExplorer() throws Exception 

    MapJobExplorerFactoryBean factoryExplorer = new MapJobExplorerFactoryBean(
            new MapJobRepositoryFactoryBean(getTransactionManager()));
    factoryExplorer.afterPropertiesSet();
    return factoryExplorer.getObject();


@Bean
public JobLauncher jobLauncher() throws Exception 
    SimpleJobLauncher jobLauncher = new SimpleJobLauncher();
    jobLauncher.setJobRepository(getJobRepo());
    jobLauncher.afterPropertiesSet();
    return jobLauncher;


@Bean
public PlatformTransactionManager getTransactionManager() 
    return new ResourcelessTransactionManager();


@Bean
public JobRepository getJobRepo() throws Exception 
    return new MapJobRepositoryFactoryBean(getTransactionManager()).getObject();

我使用spring.batch.initializer.enabled=false 禁用自动创建数据库表

在应用程序的第一次运行期间，一切正常，但是当我尝试启动我的工作时，我得到 mysqlSyntaxErrorException：

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: 表 “BATCH_JOB_INSTANCE”不存在

【参考方案1】：

仅仅因为您禁用了表的自动生成，您仍然需要一些方法来使这些实体可用。 Spring Batch 有两种机制。您可以手动或通过 Liquibase 等模式管理器创建这些数据库表。为此，请使用 spring 批处理核心资源https://github.com/spring-projects/spring-batch/tree/4.0.0.RELEASE/spring-batch-core/src/main/resources 中的 SQL 文件。否则，您可以使用这些表的内存表示。