| The raise of Market-guide price of land in our country is the first time, which is a reasonable limit of price at selling state-owned land. The proposal of Land-market guide price of land department is behind of administrative approval and management authority delegating to adjust in order to ensure smooth current premium system, the implementation of the land transfer of regulatory responsibility and core build premium integrated regulatory system is to prevent land vicious competition ensure no loss of state-owned land revenue, local governments regulate land work of important initiatives. In order to implement this initiative in order to land the market pricing of the object the establishment of an updated management system, the system can transfer price guide regularly publish annually, the department of land as a basis for the transfer of land, more efficient management of the land market.This paper relies on the Ningbo city level land market-guide price update project, discussing the difference between technology and tradition of WebGIS RIA, and technology development and implementation of WebGIS based on Flex framework and ArcGIS for Server platform were studied. Firstly this paper elaborated ArcGIS for Server architecture and Flex technologies, based on analysis of the ArcGIS API for Flex technology roadmap to build WebGIS systems and related details; Secondly, the key technology of system development conducted in-depth research, and these issues proposes corresponding solutions; and finally, the initial realization of Ningbo city level land guided update management systems, based on validated RIA WebGIS system development were advanced. This study achieved the following results and conclusions:1) Analysed the shortcomings and deficiencies of traditional WebGIS, and on this basis, we propose to build a system based RIA solutions.2) Solved the system development in key technical problems. For example, Flex development of custom components; FSH integration framework between the layers; problem Flex cross-domain access.3) Used Flex and J2EE related technologies, designed and implemented based on the general framework for RIA development of WebGIS system for land-related WebGIS system development reference.4) In Adobe Flash Builder 4.5 environment initially completed the design and development of the system, the system fully embodies the characteristics of RIA applications:friendly interface, rich experience and immediate response. RIA-based WebGIS WebGIS relative to the traditional B/S mode, and more practical. |