The research of information publishing platform in Web GIS based on Applet/Servlet mode

this paper analysis mainstream technology of WebGIS and introduces the information publishing platform that is developed with the Applet/Servlet technology, mixed computing pattern. The method adopts prefetching strategy of remote objects and utilizes RMI to transfer or communicate remote objects in Server side. The platform Client display and control by Java Applet. The logic functional modules of application are completed by Server side. The balance between Server's and Client's load comes true by this way. The response velocity for system is improved. The bottleneck problem of the large spatial data and the slow transmission on web met the issue of the Client's graphics and image information on distributing environment is solved.