Research And Application Of Integration Of J2EE And Ajax In Industry Report

In recent years, with the rapid spread and popularity of Internet technology, J2EE and Ajax, which are framework building models and have matured, receive an in-depth research abroad and at home. Also they give full play to their strengths in Web development and obtain good result. In the mean time, the custom reports technology, which has solved the defects on scalability and maintainability of tradition report, is developing fast and has been widely used in practice.Firstly, this dissertation describes the limitations of industry report system based on the traditional J2EE technology, analyses the strengths and weakness of traditional J2EE framework. After analyzing the characteristic and workflow of J2EE and Ajax technology, it puts emphasis on analyzing the advantages of building system using Ajax, such as avoiding the trouble of refreshing the page and reducing server burden, explores and studies how to improve the server's load capacity and the client load.Secondly, based on the analysis of J2EE and Ajax technology, it combines them together to build a new integrated framework, elaborates the integration methods and processes of the framework, puts stress on the feasibility of the integration framework, and designs the present layer, business layer and data persistence layer.Thirdly, the dissertation studies the custom reports, introduces common techniques and working principle of the custom reports, proposes a way of custom reports based on XML, Jasperreports, IReport technology, and gives a concrete realization.Finally, the author analyses the demand of industry report system of the city economy and information committee. It realizes the system by applying the integrated framework of J2EE and Ajax, also the custom reports method based on XML, JasperReports, IReport technology. It achieves the MVC process using the Struts framework, achieves loosely coupled between different layers using the Spring's IOC, achieves data persistence using DAO, achieves the remote call form client to server using the DWR framework.