Design And Implementation On Directory System Platform Of E-Government Information Resource

Government information resource, as a major part of national information resource, accounts for 80% of whole social information. Government pays great attention on information resource's exploit and utilization from strategic perspective as never before. Therefore it is the critical task in government informationalization to guarantee the efficient development and utilization of government information. Considering the current situation and problems in current government information construction, author believes that government information resource catalog system plays the key part in government information resource's exploit and utilization.This article presents and investigates several advanced IT technologies such as Service-Oriented Architecture (SOA), Extensible Markup Language (XML) and J2EE, which will be used as the platform to develop the government resource catalog system.The design patterns that the article presents are very capable of developing this system and conform to government resource sharing and e-government developing trend. The followings are the highlights of this article:To extract metadata from the varieties of government information and generate the information catalog;To use private e-government network as the data carrier to transfer catalog data from different government operation units to catalog centre for central management. Catalog system consisting of catalog sharing, catalog managing, system managing and offering centralized management of catalog data.To dispatch the catalog information to web in different approaches and offer a variety of inquiries;To utilize the Component-based design and development and provide the following functionalities such as data extracting and loading, data sending and receiving, and data processing, etc.The article has achieved the followings: cross-platform data interchange mechanism by SOA to solve the problems of information isolation; the standardizing information classifications to manage the information resources more flexible and dynamically; xml as the data interchange carrier to exchange data between incompatible systems.The design architecture and development approaches that this article presents are also very applicable in other industries.