基于DAO模式的Hibernate框架在Java Web开发中的应用

Application of the DAO pattern based Hibernate framework in Java Web development

Hibernate是目前Java领域中最受欢迎的OR映射开源框架,它的出现使程序员得以摆脱编写繁琐SQL语句的麻烦,将更多的精力用于业务逻辑的设计。DAO即数据访问对象,其目的是实现一种用来操作数据源的访问机制。通过DAO层的抽象,将具体的业务逻辑层和数据持久层区分开来,实现了系统与特定数据源的松耦合,即使改变DAO实现代码也不会影响业务层的调用。通过案例,对基于DAO模式的Hibernate框架技术进行了介绍。

Hibernate is one of the most popular object-relational mapping framework in Java field. It makes programmers focus more on the design of the business logic instead of coding complex SQL statements. Data Access Object can separate the specific business logic from the data persistence by its abstraction, to realize a loose coupling structure between system and specific data source. Even if the DAO implementation code changes, it will not affect the business layer calls. Through the case, this article makes an introduction of this technology with DAO pattern.