教学管理系统毕业设计(论文)任务书

大连交通大学信息工程学院

毕业设计(论文)任务书题目蒙奇奇教学管理系统

大连交通大学信息工程学院

毕业设计(论文)进度计划与考核表

指导教师签字：年月日注：“计划完成内容”由学生本人认真填写，其它由指导教师考核时填写。

大连交通大学信息工程学院

毕业设计(论文)外文翻译

学生姓名冯程程专业班级软件工程08-1班

指导教师杨迪李孝贵职称高工助教

所在单位信息科学系软件工程教研室

教研室主任刘瑞杰

完成日期 2012 年 4 月 13 日

The Web application and the development

In this paper we present and discuss a template/meta-data based partial code generation system supporting web application development. Seamlessly incorporating the recent top-notch

technologies, the framework maximally exploits the capabilities of the underlying implementation technologies. Our approach primarily benefits the framework and code developers. In addition, the complete separation of data model, navigation model, and presentation model reflects on a more general conceptual process that would decouple the technique and methodology from its underlying technology choices. The decoupling between the generated code and the code that is necessarily added later on through other development pathways than the generator deals with the incremental changes and adaptations of the models in the face of an operational system, therefore further enhances the extensibility, maintainability, and reusability of the generated applications.

Categories and Subject Descriptors

Involving with multiple disciplines relating to the computing and networking technologies, the development of web applications can be quite complex, costly and time-consuming, if not supported by a practical methodology [9]. In order to increase the productivity of web application development, a wealth of languages and standards and techniques have been created. On the basis of our consulting experience in industry, we believe that the following technologies dominate in the present web application realm. The Java 2 platform, Enterprise Edition (J2EE) defines de facto standard software architecture for multi-tier interactive web applications [16]. Meanwhile, application servers, which most commercial products available today are based on the J2EE platform, provide system-level environmental support for web application development that prevent developers from tedious coding of system level utilities [13]. According to the J2EE paradigm, the architecture of a typical web application reflects the traditional three-tier architectural model [15]: front-end, middle tier, and back-end. The Hyper-Text Markup Language (HTML),JSP, and JavaScript provide powerful means to describe dynamic web interfaces for applications; and Java Servlet provides underlying support to construct web page information on the fly. The concepts of session bean and entity bean in EJB technique

clearly decouple the code serving for business logic processing from the code of data, thus provide a commanding infrastructure to construct the middle-tier of applications. Furthermore, the EJB engine provides a higher-level abstraction over the underlying

data model storage devices – the traditional relational database, which is considered to be the back-end of a web application. In addition, some other techniques further assist to firm the J2EEbased development methodology, such as Struts [23], Ant [1], and XML [21]. Struts provides an open source unified front-end Model-View-Controller (MVC) framework [10] for web applications. Ant is a Java based prompt build tool that allows developers to utilize XML technique to configure the relationships between different building blocks and generate the compiled version. As a universal description language, XML provides a de facto standard language to define and describe web applications.

J2EE-based techniques have enabled the explosion in the number of web applications that we