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。
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。
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