@Bean
public AnnotationMBeanExporter annotationMBeanExporter() {
    return new AnnotationMBeanExporter();
}

@Bean
public TransactionAttributeSource annotationTransactionAttributeSource() {
    return new AnnotationTransactionAttributeSource();
}

@Bean
public TransactionInterceptor transactionInterceptor() {
    return new TransactionInterceptor(transactionManager(), annotationTransactionAttributeSource());
}