我刚刚经历了这个,我发现了一些似乎有效的东西。正如您所注意到的,@EnableBatchProcessing
会导致 aDataSourceTransactionManager
被创建,这会搞砸一切。我正在使用 modules=true in @EnableBatchProcessing
,所以这个ModularBatchConfiguration
类被激活了。
我所做的是停止使用@EnableBatchProcessing
,而是将整个ModularBatchConfiguration
类复制到我的项目中。然后我注释掉了这个transactionManager()
方法,因为 Atomikos 配置创建了JtaTransactionManager
. 我还必须重写该jobRepository()
方法,因为它被硬编码为使用DataSourceTransactionManager
created inside DefaultBatchConfiguration
。
我还必须显式导入JtaAutoConfiguration
该类。这会正确连接所有内容(根据执行器的“bean”端点 - 感谢上帝)。但是当你运行它时,事务管理器会抛出一个异常,因为某处设置了明确的事务隔离级别。所以我也写了一个BeanPostProcesso
r来查找事务管理器并调用txnMgr.setAllowCustomIsolationLevels(true)
;
现在一切正常,但是在作业运行时,我无法使用从 batch_step_execution 表中获取当前数据JdbcTemplate
,即使我可以在 SQLYog 中看到数据。这肯定和事务隔离有关,但是我还没有理解。
这是我的配置类的内容,从 Spring 复制并如上所述进行了修改。PS,我的DataSource
那个指向数据库,批处理表注释为@Primary
. 此外,我将DataSource
bean 更改为org.apache.tomcat.jdbc.pool.XADataSource
; 我不确定这是否有必要。
@Configuration
@Import(ScopeConfiguration.class)
public class ModularJtaBatchConfiguration implements ImportAware
{
@Autowired(required = false)
private Collection<DataSource> dataSources;
private BatchConfigurer configurer;
@Autowired
private ApplicationContext context;
@Autowired(required = false)
private Collection<BatchConfigurer> configurers;
private AutomaticJobRegistrar registrar = new AutomaticJobRegistrar();
@Bean
public JobRepository jobRepository(DataSource batchDataSource, JtaTransactionManager jtaTransactionManager) throws Exception
{
JobRepositoryFactoryBean factory = new JobRepositoryFactoryBean();
factory.setDataSource(batchDataSource);
factory.setTransactionManager(jtaTransactionManager);
factory.afterPropertiesSet();
return factory.getObject();
}
@Bean
public JobLauncher jobLauncher() throws Exception {
return getConfigurer(configurers).getJobLauncher();
}
// @Bean
// public PlatformTransactionManager transactionManager() throws Exception {
// return getConfigurer(configurers).getTransactionManager();
// }
@Bean
public JobExplorer jobExplorer() throws Exception {
return getConfigurer(configurers).getJobExplorer();
}
@Bean
public AutomaticJobRegistrar jobRegistrar() throws Exception {
registrar.setJobLoader(new DefaultJobLoader(jobRegistry()));
for (ApplicationContextFactory factory : context.getBeansOfType(ApplicationContextFactory.class).values()) {
registrar.addApplicationContextFactory(factory);
}
return registrar;
}
@Bean
public JobBuilderFactory jobBuilders(JobRepository jobRepository) throws Exception {
return new JobBuilderFactory(jobRepository);
}
@Bean
// hopefully this will autowire the Atomikos JTA txn manager
public StepBuilderFactory stepBuilders(JobRepository jobRepository, JtaTransactionManager ptm) throws Exception {
return new StepBuilderFactory(jobRepository, ptm);
}
@Bean
public JobRegistry jobRegistry() throws Exception {
return new MapJobRegistry();
}
@Override
public void setImportMetadata(AnnotationMetadata importMetadata) {
AnnotationAttributes enabled = AnnotationAttributes.fromMap(importMetadata.getAnnotationAttributes(
EnableBatchProcessing.class.getName(), false));
Assert.notNull(enabled,
"@EnableBatchProcessing is not present on importing class " + importMetadata.getClassName());
}
protected BatchConfigurer getConfigurer(Collection<BatchConfigurer> configurers) throws Exception {
if (this.configurer != null) {
return this.configurer;
}
if (configurers == null || configurers.isEmpty()) {
if (dataSources == null || dataSources.isEmpty()) {
throw new UnsupportedOperationException("You are screwed");
} else if(dataSources != null && dataSources.size() == 1) {
DataSource dataSource = dataSources.iterator().next();
DefaultBatchConfigurer configurer = new DefaultBatchConfigurer(dataSource);
configurer.initialize();
this.configurer = configurer;
return configurer;
} else {
throw new IllegalStateException("To use the default BatchConfigurer the context must contain no more than" +
"one DataSource, found " + dataSources.size());
}
}
if (configurers.size() > 1) {
throw new IllegalStateException(
"To use a custom BatchConfigurer the context must contain precisely one, found "
+ configurers.size());
}
this.configurer = configurers.iterator().next();
return this.configurer;
}
}
@Configuration
class ScopeConfiguration {
private StepScope stepScope = new StepScope();
private JobScope jobScope = new JobScope();
@Bean
public StepScope stepScope() {
stepScope.setAutoProxy(false);
return stepScope;
}
@Bean
public JobScope jobScope() {
jobScope.setAutoProxy(false);
return jobScope;
}
}