【作者】 李俊玉；

【导师】 高勇秀；

【作者基本信息】 北京工业大学 ， 计算机应用技术， 2003， 硕士

【摘要】 二十世纪九十年代以来，随着因特网的迅猛发展，高新技术的日益普及，特别是知识经济的兴起，人们逐渐认识到信息是知识经济的基础，谁掌握了信息，谁就掌握发展经济的主动权。因此，对网上信息的有序组织越来越引起世界各国的重视。在这种情况下，数字图书馆（Digital Library）应运而生，并逐渐成为各国竞相投入的一个热点。作为知识经济的重要载体，数字图书馆是国家信息基础设施重要组成部分，目前已成为评价一个国家信息基础水平的重要标志和本世纪各国文化科技竞争的焦点之一。近几年来，我国高校图书馆和公共图书馆迅速推进信息化建设，在教育信息化和科研信息化需求强劲推动之下，尤以高校图书馆的数字化图书馆建设最为成功。多数高校采用引进和自建数据库的方式构建了相当规模的数字化信息资源，通过校园网、互联网和电子阅览室等多种途径为广大师生提供了越来越方便的信息服务，使我国高校教育科研队伍获取信息和知识的能力得到了大幅度的提升。本课题对各高校数字图书馆建设过程中出现的对异构平台、异构数据源的统一检索问题提出了一个全新的解决方案。本课题是根据北工大图书馆建设过程中的需求而来的，也符合我国高校数字图书馆建设的实际需求。它进一步整合已有的资源，将来源不同、结构不同、用法不同的各种数据库纳入统一检索平台，以便于用户更方便地获取信息。本论文介绍了J2EE规范、J2EE分布式应用体系结构的特点以及支持J2EE构架的应用服务器Bea公司的Weblogic的技术特性，并详细描述了基于J2EE构架的统一检索系统的设计思想、总体构架以及各个层次的具体设计及相应的实现。更多还原

【Abstract】 Since 1990s,with the rapid evolution of the internet and increasing popularization of the high technology, especially the rising of the knowledge economy, people know gradually that information is the base of the knowledge economy, and he will take the initiative of developing economy if he controls information. So the ordinal organization of the internet information has arose more and more regard of all countries. Under this conditions, digital library emerged as the times require, and grdually became a hotspot which all countries devoted to. As the important carrier of the knowledge economy ,digital library is the important part of the country’s information basic establishment. Now digital library has been a important token of estimating a country’s information basic level and become one of the focus which all countries’ culture and technology’s competition.In these years, under the driver of education information and scientific research information, colleges library and common library of our country has boosted the development of the information rapidly, especially colleges library of our country’s development is the most success. Most of the colleges developed good-sized digital information resource by introducing into and self-create database, provided more and more convenient information service through CWISs(Campus-Wide Information Systems),internet and digital reading room, and improved education and scientific research’s procession of our colleges rapidly.This thesis brings forward a fire-new resolvent to uniform search of different platforms and isomerous data source in the course of developing digital libraries of all colleges. And this paper comes from the requirement in the course of developing digital libraries of Beijing Polytechnic University and accords with the actual requirement of the development of our country’ digital library of colleges. It conforms ulteriorly all kinds of existing resource, brings all kinds of databases, which have different sources, different structures and different usages, into a uniform search platform, so that users can get their information conveniently.This paper introduces J2EE criterion, character of J2EE distributed application system architecture and the technology trait of BEA’s Weblogic which supports J2EE truss. This paper also describes detailedly uniform search system which based on J2EE truss and its design idea, total truss, each hiberarchy’s concrete design and corresponding realizing.更多还原