J2EE作为一种企业级 Web 应用程序开发技术，是大型企业级应用开发的首选。在J2EE系统开发过程中，一直存在着对象-关系数据库映射即数据如何有效持久化的难题，开发人员需要花费很多时间和精力来解决数据的读取和存储。本研究针对这一问题，提出在J2EE原有的四层结构中加入数据持久层，将应用程序与其所操纵的数据源分离，封装数据访问细节，为业务逻辑层提供面向对象的数据访问接口。 本论文以“淄矿集团电子商务系统”课题为依托，着重研究整合Hibernate持久层框架的J2EE多层体系结构在企业级信息系统中的应用。 本论文完成的工作及主要研究成果如下： 第一，研究了J2EE技术及企业级应用系统的开发过程，分析了基于J2EE多层体系结构构建企业应用系统的优越性。 第二，研究数据持久层技术的相关理论和实现技术，结合J2EE多层体系结构，提出了用于企业应用系统开发的五层体系架构模型，并对数据持久层的作用以及所处的层次关系作了细致的研究和分析。 第三，对比分析现有的持久层解决方案，决定采用Hibernate构建数据持久层，并对Hibernate实现对象持久化的原理和关键技术做了深入研究和验证。 第四，根据需求分析设计了“淄矿集团电子商务系统”的整体功能模块，然后以Tomcat5.5.17为应用服务器，Microsoft SQL Server 2000为数据库， Hibernate为持久层框架，实现了淄矿集团电子商务系统。 系统整体建设成功后的评估结果表明，在企业级信息系统中引入数据持久层框架，能够大幅度提高编程效率，提高软件系统的整体性能。

J2EE, as a kind of enterprise Web application development technique, is the head choose of large business application. In the process of J2EE system development, the problem of object-relational database mapping namely date permanence has been existing, developers have to cost plenty of time and energy to resolve the problem of data reading and saving. To resovle this question, This paper putting forward to join permanent layer into the J2EE originally four-layer-structure, which will conseal the data interview detail, provide an object oriented interface for business logic layer. Against the project "ZBM E-Business system", this paper researched the application of J2EE multi-layer structure added Hibernate permanence layer framework in the enterprise information system. The main works and contribution of this paper are as follows: The first, research the J2EE technique and the development process of the enterprise application system; analyze the superiorities of setting up a enterprise application system based on J2EE。 The second, research the theories and techniques of permanence layer; put forward five-layer system structure model combining J2EE multi-layer structure, analyze the function in the whole structure。 The third, decide adopting Hibernate by contrasting the existing solution of Java permanence layer, and detailed research and verify the principle and key technique of Hibernate. Finally, design the function module of "ZBM E-Business System", and then based on the J2EE structure integrated Hibernate permanence layer framework, realize the information system. The evaluation after the whole system successfully constructed expressed that, introducing permanence layer framework into the enterprise information system can increase the progress efficiency and improve the system performance.