Spring defines a coherent data access exception class hierarchy (Figure 12) that you can use as a basis for your service- and DAO-layer exceptions.

Spring定义了一致的数据访问异常类层次结构（请参见图12），您可以将其用作服务和DAO 层异常的基础。

youdao

For example, Spring 2.0 introduced the PersistenceExceptionTranslationPostProcessor to automatically enable data access exception translation for any object carrying the @Repository annotation.

比如，Spring2.0引入了PersistenceExceptionTranslationPostProcessor对任何带有@Repository注解的对象自动激活其数据访问异常转换。

youdao

For example, Spring 2.0 introduced the PersistenceExceptionTranslationPostProcessor to automatically enable data access exception translation for any object carrying the @Repository annotation.

比如，Spring2.0引入了PersistenceExceptionTranslationPostProcessor对任何带有@Repository注解的对象自动激活其数据访问异常转换。

youdao