Spring引导（spring批处理）配置禁用数据库的自动创建

Question

我正在使用Spring-Boot与Spring-Batch，我有我的application.properties中的数据源配置，但我不希望春天批处理创建表我的数据库，所以我用下面的配置

@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(); 
} 
} 

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

的在应用程序第一次运行，一切正常，但是当我尝试lanch我的工作我得到MySQLSyntaxErrorException：

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException：表只是因为你已经禁用了自动生成的表 “BATCH_JOB_INSTANCE”不存在

Answer 1

，你仍然需要一些方法来有这些实体可用。 Spring Batch有两个机制。您可以手动创建这些数据库表，也可以通过Liquibase等模式管理器创建这些数据库表。为此，请使用Spring批次核心资源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中表示形式。