Web geographic information system (GIS) based on java 2 platform enterprises edition (J2EE) and enterprises java bean (EJB)

一种基于J2EE/EJB的WebGIS系统

Abstract

The invention relates to a web geographic information system (GIS) based on a java 2 platform enterprises edition (J2EE) and an enterprises java bean (EJB), which comprises a client terminal, a Web server, an application server, GIS server, a data server and an EJB server. The client terminal is connected with the Web server through the Internet, the Web server is arranged on the application server which is connected with the GIS server, and the GIS server is respectively connected with the data server and the EJB server. The GIS server classifies map data into background data and thematic data, and sends the classified background data and the thematic data to the Web server. The Web server transmits the thematic data to the client terminal in vector mode, and enables the background data to be generated into images, and then the images are downloaded in the client terminal. Compared with the prior art, the web GIS based on the J2EE and the EJB has the advantaged of being capable of guaranteeing that the client terminal can process vector data, controlling data transmission quantity to the minimum and the like.
本发明涉及一种基于J2EE/EJB的WebGIS系统,包括客户端、Web服务器、应用服务器,还包括GIS服务器、数据服务器、EJB服务器,所述的客户端通过Internet与Web服务器连接,所述的Web服务器设在应用服务器上,所述的应用服务器与GIS服务器连接,所述的GIS服务器分别与数据服务器、EJB服务器连接,所述的GIS服务器把地图数据分类成背景数据和专题数据,所述的GIS将分类后的背景数据和专题数据发送给Web服务器,所述的Web服务器将专题数据通过矢量方式传输给客户端,所述的Web服务器将背景数据先生成图像后再下载到客户端中。与现有技术相比,本发明具有保证了客户端处理矢量数据的能力,又将数传输量控制到最小等优点。

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    CN-103279526-BAugust 24, 2016中国科学院国家天文台, 中国电子科技集团公司第十五研究所一种基于ActiveX的WebGIS三维月球系统及实现方法