Earticle

With the rapid development of Internet and information technologies, E-business is rapidly becoming the focus of business activity. However the traditional E-business application system exists the non-unitary technical standards, lack of unified commercial release mechanism, difficult information exchange and cooperation, long development time, difficult reconstruction and upgrading maintenance. A large number of Web services, JAVA EE technology has become more mature and stable. So the key techniques of XML, SOAP, WSDL and UDDI in Web service are analyzed in detail, then a new E-business application framework based on Java EE and Web services is proposed to overcome the shortcomings of the traditional E-business application system. In the this E-business application framework, the characteristics and architecture of Web service are used to realize the standard and loosely coupled application architecture and guarantee compatible information exchange and cooperation. The Java EE framework is use to ensure the more strong security and better stability for E-business application framework. So the new E-business application framework takes on crossing platform, flexibility and easy expansion, and can meet the openness, complexity, distribution, dynamic and customization of E-business.

As cities in developing countries are expanding rapidly in recent years, flood has an increasing impact on urban management. In this paper, we present the design and implementation of an urban flood defense decision support system based on big data. The system connects real-time sensor to collect streaming data, and uses a data-driven method that considers temporal and spatial factors to forecast water level in the next 6 hours. Thus, it can provide enough time for the authorities to take pertinent flood protection measures such as evacuation. Our predictive model is a hybrid of linear regression and artificial neural network, and can give early warning of potential flood using the forecast results. The system is implemented on Java EE platform, and integrated with Baidu Maps API to provide a user-friendly interface.

In order to develop such web-based application systems efficiently, object-oriented analysis and design methodology is used, and Java EE(Java Platform, Enterprise Edition) technologies are used for its implementation. In addition, security issues have become increasingly important. Consequently, since the security method by Java EE mechanism is implemented at the last step only, it is difficult to apply constant security during the whole process of system development from the requirement analysis to implementation. ……………. Therefore, this paper suggests an object-oriented analysis and design methodology emphasized in the security for secure web application systems from the requirement analysis to implementation. The object -oriented analysis and design methodology adopts UMLsec, the modeling language with an emphasis on security for the requirement analysis and system analysis and design with regard to security. And for its implementation, RBAC(Role Based Access Control) of servlet from Java EE technologies is used. Also, the object-oriented analysis and design methodology for the secure web application is applied on an online banking system in order to prove its effectiveness.