Jsf-based Web Gis Design And Realization

In recent years, network technology advanced fastly, as a result, more and more technique field focused on the combination of the network technology and the professional skills, such as the GIS technology. So based on the Internet,Web-GIS is coming. At the other hand, the Web-GIS is the GIS development skill merged with Internet technique. The functionality of the GIS was extended with the popularity of the word-wide-web, as a sequence, it virtually became the popular tool for the majority.Nowadays, the major development tool for the Web-GIS is Java technique and the dot Net technique. In this article, the Java technique is the choice, and the JSF framework is used, which is the most popular model-view-controller design pattern in J2EE field, companying with the discussion of the core technique within the Web-GIS architecture, and roughly talked about the whole procedure in the construction of the Web-GIS, as well as the map service. The whole architecture is constructed with JSF framework, and the JSP technique is used for page building, map explore and query is also include. At the same time, the JSF framework most make use of the Front-controller within the M-V-C mode, and thus clarifying the query for Geography database and the query for rational database, not interrupt with each other. As a conclude, with the JSF framework and the M-V-C model, the page view and the complex business logic is separately independent, the system is clearly, flexible, and it is more extensible and more maintainable.