| Aiming at the urgent problems in present constructions of shipping information system, namely the ocean spatial information cannot be shared, this paper presents the thought of building an ocean spatial information service platform. By means of analyzing the architecture of various distributed information systems that are used now, combined with the characteristics of shipping information system, put forward to employing J2EE specification designed by Sun Company, which used distributed enterprise information system as the base of this platform architecture. This paper designs the architecture of this platform. According to the scale of ocean spatial data in the platform, it presents two organizing spatial data model-data file model and relational database model, and gives each of them storage mechanism accordingly. This paper also studies the way to realize this platform and tests the rationality of the design scheme for this platform through experiment programming.The aim of this ocean spatial information platform is to put ocean based geographic data, theme data and ocean business data into J2EE architecture, found a comprehensive information service platform and realize the integration and share of the various ocean spatial information and business information. Due to adopt the EJB of J2EE to achieve data service component and data managament component, the platform has a better technical basis in scalability, interoperability and flexibility . |
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