TransactionAspectSupport.java 文件源码

/**
 * Determine the specific transaction manager to use for the given transaction.
 */
protected PlatformTransactionManager determineTransactionManager(TransactionAttribute txAttr) {
    if (this.transactionManager != null || this.beanFactory == null || txAttr == null) {
        return this.transactionManager;
    }
    String qualifier = txAttr.getQualifier();
    if (StringUtils.hasLength(qualifier)) {
        return BeanFactoryAnnotationUtils.qualifiedBeanOfType(this.beanFactory, PlatformTransactionManager.class, qualifier);
    }
    else if (this.transactionManagerBeanName != null) {
        return this.beanFactory.getBean(this.transactionManagerBeanName, PlatformTransactionManager.class);
    }
    else {
        return this.beanFactory.getBean(PlatformTransactionManager.class);
    }
}