Research And Realization Of The WebGIS Based On Java

Geography Information System(GIS) with the arithmetic figure re- fleets the Earth space that the human rely for and every kind of the changing space data. Which describes the characteristic attribute of the space data and supports to input,output,save or show the space data and the property data .Simultaneity it proceeds the search of the geography space information and synthesize analysis to make policy with the assistance.Along with the environmental formation in the scope of world, the world is entering a ages that regards network Internet as the central calculator.WebGIS can be defined in brief for the GIS on Web. To be brief, WebGIS is a new technique that makes use of the technique of Web to expand and perfect GIS.Currently Internet and Intranet develop quickly with the astonishing speed.Under such situation, how to lead the GIS into the Internet and Intranet world,how to make GIS made well use of and develop the advantage that the Internet become investigative an important lesson in the development of GIS.The WebGIS has become the applied focus in research in every way.WebGIS with a kind of new work mode and a new mechanism shared data is widely applied in every kind of realm that involve the geography information. How to provide the information with serve for the world scope customer has the great significance now in fact.WebGIS is the combine of the GIS and network.lt makes the apply field of the GIS expand to the social square aspect and become the popularize infor- mation tool.The paper from shallow into deep introduces GIS and how facture electronics map and how to set up the database and GIS data model with the GIS. Afterwards it discuss every kind of model to establishes WebGIS and realizae technique and how to set up general systems model. At the foundation of the contents,the paper synthesizes every kind of method that realizes the system of WebGIS and try to makes use of the Java to realize the system of WebGIS. At last ,when which chooseJava to realize WebGIS system,on one hand it makes use of the traditional method to realizes WebGIS in interiorly the network, on the other hand it employ the method of the usage Java Applet to realize it. Namely it announces the internal geography information on the net.