J2ee Technology Applied Research In Weather Information Systems

According the requirement of meteorological services, many units have built their data systems which used different designing technology and database types, based on different computer platform. And with the historic and technological factors, there existed lots of isolated application systems because unification design and standard between the systems were less for sharing the information with other systems. So it is critical to constitute the uniform normative interfaces between the disparate systems, to exchange and share the data via computer network, to realize the consolidated and one-port meteorological information system ultimately. Simultaneously, how to put the data detect by the new apparatus into the synthetical database should be solved because the new resources such as visibility data were absence in existed database systems. Moreover, more new equipments will be employed that demand the system should provide higher extensibility and more standard application interfaces.To accommodate to new requirement of weather services, the integration between the current different application systems and databases should be enforced, the search of data memorized and the share of data also should be enhanced. Aiming at the demand in integrating the existing data resources, conceiving the uniform information platform, we evaluated the applicability of J2EE in building the multi-layer meteorological information system, set the basic skeleton of this system based on J2EE, utilized JDBC to put up the consolidated operation among the different and dispersive databases. By means of JAAS and electric signature, we strengthened the security of the whole system and data during the process of share, and discussed the application of J2EE technology in constructing the distributed and dynamic meteorological information system.