J2EE-Based Investment Project Evaluation System-A Theory And Practice Study

Project evaluation refers to the process of adopting scientific ways and means, according to the relevant policies, laws and parameters, to analyze and judge the financial and social benefits of a project, so as to decide whether to invest in or loan for it. Many units have to evaluate by experiences due to the lack of effective technical economic evaluation system, and fail to achieve the expected economic benefits. An investment project evaluation software is an effective way to help evaluate the investment project scientifically and to analyze the financial feasibility and economic rationality of this project. It can improve the evaluation efficiency and speed the process of keeping in line with the international standards.The design in this essay is accomplished according to the principles of software engineering, considering the development characteristics of the evaluation field, as well as the project evaluation methods and index instructed by the National Development Reform Committee.Firstly, the essay introduces the backgrounds of investment project evaluation field and its information system construction. The necessity and significance of this system is emphasized, and the demand analysis is made thoroughly according to the conducting flow of this field, as well as the specification and parameters. Then, this essay illustrates the architecture criterion of J2EE on which this system is based and the MVC pattern realized by Struts frame. Also, this essay discusses the relevant concepts, principles, theories and practice. The Web container and database management system chosen to meet the needs of the actual development and application is also introduced.The realization plan of MVC pattern based on the Struts frame is put forwards subsequently. The calling class is also designed. The concepts of the database entity relation and the whole logic design are also given in this part. It is verified by normal form(NF).The essay concludes with giving the realization codes of database connecting, Chinese coding processing and some functional modules.