DataSourcesTransactionManagerAutoConfigurationRegistrar.java 文件源码

@Override
public void registerBeanDefinitions(AnnotationMetadata importingClassMetadata, BeanDefinitionRegistry registry) {

    if (beanFactory instanceof ListableBeanFactory) {

        String[] dataSourceBeanNames = ((ListableBeanFactory) beanFactory).getBeanNamesForType(DataSource.class,
                false, true);
        if (dataSourceBeanNames != null) {
            for (String dataSourceBeanName : dataSourceBeanNames) {
                BeanDefinition bd = registry.getBeanDefinition(dataSourceBeanName);
                if (bd instanceof DataContextBoundBeanDefinition) {
                    DataSourceRegistrar.registerDataSourceTransactionManager(registry, dataSourceBeanName,
                            ((DataContextBoundBeanDefinition) bd).getDataContextId().orElse(null),
                            PrimaryMode.AUTO);
                }
            }
        }

    }

}