Research And Appliance Of Ajax In Integrated Framework

The background and meaning of research subject is briefly introduced in this paper combined with the design and realization of project House Property Management System. The development of design pattern and framework is overviewed under the author's research work. Project's modules are divided into parts according to requirement of the project, and the reusable framework model is figured out which implements the J2EE's four-layer-model. The discussion is given of the project's ingredients, the reason of chosen framework in each layer, and the process of combination between frameworks.Advantages and disadvantages of heavyweight EJB are mentioned in the paper, and the reason is studied why lightweight Spring which has advantages to stay in the business-layer is chosen to be the business-layer's dominant framework. The technical points of separately integration between Spring and popular frameworks, which contains Struts,Tapestry, JSF and Webwork2, is analyzed in detail, following with the integrated frameworks' utilization process, key configuration, and application samples.Ajax technique and its characteristic are introduced in the paper, as well as its fundamental working principles and popular Ajax frameworks. An Ajax technique realization called JFA is proposed on the basis of JSON data type and Facade pattern. In order to bring the JFA framework's request pool into kernel play, some experiments are taken place to acquire best parameters of the pool.Authority system, based on RBAC model and divided into two parts, authority management and authority match, to realize, is referred in this paper, In authority management subsystem, the design and realization of encoding to resource is discussed by means of an improved way of resource encoding proposed by author. Under the study of role inheritance's realization, authority match subsystem's technical points and realization process, which divided into tree parts, interceptor, encoder and matcher, to design and realize is also discussed. Some application samples and usage effect of authority system is provided in the project.Finally, research achievement is summarized in the paper, and the framework's techniques applied in research subject is discussed combined with author's specialty, at last, the further study aspect is prospected in the future.