Study On The Technology Of Model-driven J2EE Application And Development

Several problems such as needs changing and document maintenance emerge as new drags on the further progress of software industry. In order to set le these problems, the Object Management Government (OMG) presents a new technology called Model Driven Architecture(MDA), which shows the idea to build systems through models. With the development of Model Driven Architecture (MDA) software, there are more and more research subjects about model-driven application.The developing methods of traditional B/S model software existing plenty of technical bottlenecks:the program code has to be modified for system maintenance; the operational interface has to be designed separately and so on. In the paper, Model-driven Architecture on J2EE Servlet, it is proposed based on the sufficient analysis of the status quo at home and abroad study. On the research of the modeling thoughts of MDA, servlet middleware technology is employed for transforming PIM become Executable Extensible Markup Language (EXML), enabling PIM information in the platform can be dynamically read, run and generate business client interface, become one Model Driven Runtime (MDR) environment. It built on J2EE platform, offering a good mechanism for setting up systems with the quality of scalability, flexibility and easy maintenance.First of all, the paper proposed the establishment of MDA and the solutions of J2EE platform development. Besides, in the chapter of its design, focusing on model-driven structure and the model can be divided into component model, process model, data model and layout of the mode. Employing J2EE specific technology solves the problem of analytic models and design different model transform tool. Developing and studying related platform technology, concentrated on drive the model and send to the client browser, to resolve conversion technology of the PIM model in J2EE platform. The use of middleware technology that J2EE provides can more effectively develop B/S model-driven systems, and demonstrate to the client. The use of Servlet can load model information, while making a dynamic page based on information generated code is displayed to the client, to achieve convergence of the background and foreground.Lastly, the architecture applied to examples of the logistics distribution system of agricultural products, including modeling, analysis and other techniques.The paper mainly study on the technology of model-driven J2EE application and development and build. Designing and developing the operation for modeling and analysis, studying J2EE middleware and solving model-driven design. The established model can not only be developed secondarily, but also can be parsed under different development platform. The architecture embodies MDA idea, making up for deficiencies in the traditional software, improving product reusability and shortening the project development period.