Hibernate是一个面向Java环境的对象／关系数据库映射工具。对象／关系数据库映射(object／relational mapping(ORM))这个术语表示一种技术，用来把对象模型表示的对象映射到基于SQL的关系模型数据结构中去。Hibernate不仅仅管理Java类到数据库表的映射(包括Java数据类型到SQL数据类型的映射)，还提供数据查询和获取数据的方法，可以大幅度减少开发时人工使用SQL和JDBC处理数据的时间。 本文在充分研究以往数据持久层的发展和现状的基础上，引出了基于ORM的数据持久化概念，并通过其与传统持久化方法的深入比较，说明其优越性。依据这一概念，本文进一步引出基于ORM的持久层框架——Hibernate，并详细描述其体系结构和API。-Hibernate is a Java-oriented environment for the object / relational database mapping tool. Object / relational database mapping (object / relational mapping (ORM) ) said the terms of a technology, Object Model is used to express the object mapped to SQL-based relational model of data structure. Hibernate Java class management not only to the mapping database tables (including Java data type S QL data type mapping), but also provided data query and data acquisition methods, can greatly reduce development time using artificial SQL and JDBC data processing time. Based on the previous full study data persistence layer and the development on the basis of the status quo, ORM raises based on the concept of data persistence, and through its persistence with the traditional method of in-depth comp