Key Technologies In Development Of Urban Real Estate Surveying Information System Based On WebGIS And Web Services

In our country, real estate has become a pillar industry of the national economy and has played an increasingly important role in economic development and the adjustment of economic structure. As an important basic and service activity in this industry, the real estate mapping provides fundamental information to development, management, and transaction of real estate. Therefore, in the context of the information-based, it is urgent affairs and important matters for real estate mapping informationization and management to develop and improve real estate mapping information management systems.In this paper, the current situation of real estate mapping information management was discussed. Existent problems were analyzed. And importance of establishing management system for real estate mapping was illustrated. Then, according to functions of management system, three main modules - User management module, Business management module and WebGIS module were typically analyzed. In detail, the technologies used to realize these modules, structure design for each module and design of the whole system were presented. In user management module, Web Services technology was used to construct a component-based model; in the WebGIS module, a server-based WebGIS was designed through secondary development of ArcIMS; in business management module, a MVC based structural model was created through Struts technology. On the above basis, a WebGIS and Web Services technology based urban real estate information management system was designed.In addition, various key technologies and solutions used in developing the system were detailed explained. Microsoft SQL Server was applied to organize the data which were stored in different data tables by different functions, and these data tables connected with each other by keywords; with respect to database connectivity, database connection pool technology was used in order to improve the efficiency of data access; during graphical data processing, data conversion software was used to transform the data into the format which is suitable for ArcIMS distribution; in the business process design and realization, clear and concise business operation process was designed by field investigation.With the research work mentioned above, real estate mapping information management system based on WebGIS and Web Services was developed to meet users' needs and demands. This system was also applied to JiaDing district in Shanghai to demonstrate the feasibility of the technologies and methodologies presented in this paper, which obtained satisfying achievement.Finally, summary of this paper and prospect for further work were presented.This paper is supported by the National Natural Science Foundation of China (Grant No. 40771174).