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1.
基于MVC模式的网上书店的设计与实现   总被引:1,自引:0,他引:1  
Struts框架和Hibernate技术是J2EE的轻量级实现.本文介绍了使用Struts和Hibernate技术设计和实现在线书店的电子商务系统.给出了系统的结构、功能、实现过程和数据库设计.并对其中的关键技术进行了分析和详细说明.  相似文献   

2.
本文介绍了一个基于J2EE平台的在线考试信息系统,系统采用了J2EE的相关技术并使用了基于MVC模式的Struts框架,后台数据库采用MySQL。系统全部采用网页形式运行,实现了学生在线模拟考试以及学生信息管理等功能。这一系统采用多层体系结构,具有编写简化、可移植性好等特点。  相似文献   

3.
网络课程教学系统的设计与实现   总被引:5,自引:0,他引:5  
介绍了所开发的计算机网络辅助教学系统的功能和特点;分析了在线学习和在线考试两个子系统的体系结构及数据库设计。特别详细地介绍了在线考试子系统的数据库构成及自动成卷、自动阅卷、学生自我测评等功能。实验结果说明该系统达到了设计要求。  相似文献   

4.
使用JSP技术配合Struts三层架构设计在线考试系统,包括数据库、数据库连接池、登录模块、抽题模块和考试模块。总结了当前类似在线考试系统存在的账号同时在线问题、用户键盘的误操作问题、题型灵活性设置问题,并提出了一套修改服务器端脚本、数据库关系与客户端脚本的解决方案。  相似文献   

5.
针对目前普遍存在的课件利用率低、资源分布不均衡、分类不详细等问题,开发了基于Struts框架的课件发布系统。介绍了Struts框架的概念及其工作原理和系统的总体功能及数据库设计;以课件发布系统登录模块为例分析了采用Struts框架进行系统开发的流程。  相似文献   

6.
基于J2EE技术的在线课件编著系统的设计   总被引:1,自引:0,他引:1  
基于J2EE技术平台,设计了一个远程教学在线课件编著系统。该系统由客户层、中间层、数据库层三个层次组成,每一层的设计都充分考虑到课件知识点结构动态变化的特点和分布式处理环境的要求。着重讨论利用J2EE技术,解决了在传统的远程教学系统中,教师要先在本地编写好课件然后上传到服务器,学生通过下栽学习的弊端,真正做到“教师在线编辑,学生在线学习”。  相似文献   

7.
针对Java EE平台上Web应用系统中的分页查询显示问题,结合MVC模式和Struts2框架技术实现了一种Web分页模型。依托MVC层次结构设计,在业务逻辑层中定义DAO抽象类来实现数据库的可移植性,在显示层中引入JSP和Struts2标签实现分页导航的显示和逻辑的分离。实际应用证明,该分页模型移植性好、耦合性小且与数据库相关性小,能够节省维护时间。  相似文献   

8.
本文在需求分析的基础上,根据数据库设计原则设计了编辑部在线投稿系统.该系统利用ADO.NET数据库连接技术和三层架构的原理,设计了包括作者投稿、编辑审稿、专家审稿、管理员维护四大模块.该系统实现了在线投稿、在线查阅稿件状态、在线审稿等功能,在高校编辑部中具有很好的推广前景.  相似文献   

9.
基于Struts2框架的数据库分页组件的设计与实现   总被引:1,自引:0,他引:1  
设计并实现了一个基于Struts2框架的数据库分页组件,以提高利用Struts2框架进行项目开发的分页机能的开发效率,详细论述了基于Struts2框架的数据库分页组件设计与实现流程,最后论述了在项目开发中使用此分页组件的方法.  相似文献   

10.
在研究分析相关研究现状基础上,通过深入的调研与需求分析,确定采用Struts+Hibernate+Spring的Web开发架构、MVC(Model–View-Controller)开发模式、以MyEclipse为开发工具、Tomcat 5.5为容器,MySQL5.0为数据库构建在线考试系统.详细介绍了系统在线考试系统的整体架构与功能组成,阐述了数据库以及各个模块的设计方案.  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

14.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

15.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

16.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

17.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

18.
For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the  相似文献   

19.
<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with  相似文献   

20.
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