Research of Flex-based WebGIS application

Analyze the implementations of the current traditional WebGIS, such as CGI, Server API and ActiveX, summarize their advantages and disadvantages. Through these, propose three urgent problems existing in the traditional WebGIS. The WebGIS based on Flex technology can just remedy these defects. Base on the comprehensive analysis of the characteristic of Flex, the paper builds a demo version of oilfield visual management system as a practical system, and using the tile cache to improve system efficiency. Research results show that, development of WebGIS based on Flex is a very good way.