FLEX之简单评测

Flex采用GUI界面开发,使用基于XML的MXML语言。Flex具有多种组件,可实现Web Services,远程对象,drag and drop,列排序,图表等功能;FLEX内建动画效果和其它简单互动界面等。相对于基于HTML的应用(如PHP、ASP、JSP、ColdFuss),FLEX应用程序的工作流被大大改善。FLEX的语言和文件结构也试图把应用程序的逻辑从设计中分离出来。Flex服务器也是客户端和XML Web Services及远程对(Coldfusion CFCs,或Java类,等支持Action Message Format的其他对象)之间通讯的通路。     

服务器端动态网页技术——JSP＋Servlet

介绍了一种新的、根植于Java跨平台特性的服务器端新技术：Servlet JSP。它提供了一种灵活、方便、通用的方式来创建动态网页：将HTML编码与Web页面的业务逻辑有效分离,可以高效地通过JDBC与数据库通信。在上海旅委网站建设中采用了该技术进行开发。     

用JSP开发动态Web图书馆编目系统

JSP基于 Java技术 ,用于创建支持跨平台及跨 Web服务器的动态网页 ,介绍了利用 JSP技术开发三层分布式结构动态 Web图书馆编目系统 ,阐述了其开发过程及主要解决的问题。在建立动态页面时 ,充分利用JSP对参数的独特处理能力 ,实现了字段弹出著录、字段弹出提示与选择、数据存盘检测、统计及各种打印等功能     

Utilizing the multiple facets of WWW contents

Current query languages for the Web (e.g., W3QL, WebLog and WebSQL) explore the structure of the Web. However, usually, the structure of the Web has little to do with the semantics of the data. Therefore, it is practically difficult to pose database queries over the Web. We introduce a new type of tags for denoting the semantics of data stored in HTML pages. These semantic tags (implemented as HTML comments) superimpose on HTML pages semistructured objects in the style of the OEM model. The paper discusses two implemented tools for fully utilizing the semantics. The first is a visualization tool for displaying both the HTML reading of Web pages and the OEM reading of Web pages. The second tool is a query language, similar to LOREL, that can query the HTML structure and/or the OEM reading. The above formalism and tools provide data-modeling capabilities for the Web that fit its heterogeneous nature. Real database queries, taking the OEM point of view, can be formulated, including queries about the schema as well as queries about the HTML structure of Web pages. Therefore, the query language is not restricted to portions of the Web in which semantic tags are used.     

TEI类在Web容器内的运行研究

JSP页面常需使用自定义标签来满足特定的业务逻辑,而自定义标签的核心就是标签处理程序和标签额外信息(TEI)类.Web容器装填、运行JSP页面的servlet类, 进而servlet类会实例化和调用标签处理程序,然而软件理论未涉及标签额外信息类如何在Web容器内运行.通过写出标签处理程序和它的TEI类,观察Web容器的运行日志,给出了容器内创建标签处理程序实例和相应TEI类实例的顺序,阐明了TEI类中的方法在Web容器中的调用顺序和软件人员需注意的运行特点.     

Ajax技术在Web2.0网站设计中的应用研究

Ajax是Web领域的前沿技术,这种技术提供了新的互联网交互模型,并扩展了Web应用的能力。文中在介绍Ajax技术的工作原理、分析比较Ajax工作模式与传统Web工作模式区别的基础上,运用Ajax技术实现了网页的动态加载,用户的请求能更为迅捷地得到Web应用程序的回应。这样就避免了在网络上频繁地重复发送那些没有更新过的信息。相对于传统的Web应用,Ajax技术在丰富客户端的表现能力、改善用户体验中,表现了强大的交互性能。其原因在于Ajax技术实现了客户端与服务器间的数据通信,并提供了两者间异步通信的能力,因而降低了网络传输的数据量,均衡客户端与服务器间的负载。从而体现了Ajax技术提高系统效率与优化用户界面的优良性能。     

基于JSP的MVC改进模式研究及应用

介绍了传统的基于JSP的两种MVC基本开发模式,并对它们的特点和体系结构进行了分析和比较。为了提高基于传统开发模式的WEB系统中代码的可重复性、可维护性和开发独立性,从数据库访问技术、XML技术和框架技术角度,提出了一种MVC改进模式,并阐述了基于此MVC改进模式进行开发的技术原理。最后从设计角度和开发结构方面,给出一个依据此MVC改进模式实现的开发框架及其主要代码。     

基于JavaBeans的Web考试系统的设计与实现

描述了web考试系统的工作流程。提出用JavaBeans技术实现Web考试系统，以使服务器端的复杂业务逻辑与客户端表现逻辑分离。采用Java Servlet作为控制器，将试卷抽取等业务逻辑封装在JavaBeans组件中，用JSP完成动态页面的显示及与Web服务器的交互，给出了JavaBeans的实现。     

Web应用前后端融合的遗传算法并行化测试用例生成

Web应用测试用例生成并行化，是提升Web应用测试生成效率的一个有效手段.Web应用的前后端分离、事件驱动等特性，导致传统的并行化技术难以直接应用于Web应用的测试用例自动生成中.因此，如何针对Web应用进行并行化测试用例生成，是一项具有挑战性的工作.将种群并行化计算引入到基于遗传算法的Web应用前后端融合的测试用例生成中，通过线程池及调度逻辑、多浏览器进程管理及后端覆盖路径的获取，实现种群个体在多浏览器上的并行化执行及基于后端路径覆盖的适应度值并行化计算，以更高效地生成Web应用的测试用例.实验结果表明：相较于Web应用的GA串行化测试用例生成方法，所提的并行化测试生成方法能更充分地利用系统资源，极大地提升Web应用测试用例的生成效率.     

大学生就业统计分析系统

传统模式下的高校毕业生信息管理效率低、保密性差;而基于面向对象Java语言与ExtJS Web开发技术的学生就业信息管理系统,能满足数据信息集中管理和维护、实时查询的需求,提高管理的效率和质量。本系统为B/S系统,采用tomcat进行部署运行,所有的页面统一为JSP,后台使用主流的SSH框架,运用MVC模式进行系统设计。     

Web测试综述

1 引言 Web以其广泛性、交互性和易用性等特点迅速风靡世界,网页数量正以指数级飞速增长。能够吸引尽可能多的用户并对其长时间关注是网站追求的主要目标,也是衡量一个网站是否成功的主要指标,这就对网页功能的正确性、有效性和完善性提出了较高的要求,从而Web测试就成为Web应用开发过程中的一个重要环节。通过Web测试尽可能多地发现浏览器端和服务器端程序中的错误并及时加以修正,以保证Web应用的质量。由于Web具有分布、异构、并发和平台     

Webvise: browser and proxy support for open hypermedia structuring mechanisms on the World Wide Web

This paper discusses how to augment the World Wide Web with an open hypermedia service (Webvise) that provides structures such as contexts, links, annotations, and guided tours stored in hypermedia databases external to the Web pages. This includes the ability for users collaboratively to create links from parts of HTML Web pages they do not own and support for creating links to parts of Web pages without writing HTML target tags. The method for locating parts of Web pages can locate parts of pages across frame hierarchies and it also supports certain repairs of links that break due to modified Web pages. Support for providing links to/from parts of non-HTML data, such as sound and movie, will be possible via interfaces to plug-ins and Java-based media players.The hypermedia structures are stored in a hypermedia database, developed from the Devise Hypermedia framework, and the service is available on the Web via an ordinary URL. The best user interface for creating and manipulating the structures is currently provided for the Microsoft Internet Explorer 4.x browser through COM integration that utilizes the Explorer's DOM representation of Web-pages. But the structures can also be manipulated and used via special Java applets and a pure proxy server solution is provided for users who only need to browse the structures. A user can create and use the external structures as `transparency' layers on top of arbitrary Web pages, the user can switch between viewing pages with one or more layers (contexts) of structures or without any external structures imposed on them.     

STEM: a suffix tree-based method for web data records extraction

To automatically extract data records from Web pages, the data record extraction algorithm is required to be robust and efficient. However, most of existing algorithms are not robust enough to cope with rich information or noisy data. In this paper, we propose a novel suffix tree-based extraction method (STEM) for this challenging task. First, we extract a sequence of identifiers from the tag paths of Web pages. Then, a suffix tree is built on top of this sequence and four refining filters are proposed to screen out data regions that might not contain data records. To evaluate model performance, we define an evaluation metric called pattern similarity and perform rigorous experiments on five real data sets. The promising experimental results have demonstrated that the proposed STEM is superior to the state-of-the-art algorithms like MDR, TPC and CTVS with respect to precision, recall and pattern similarity. Moreover, the time complexity of STEM is linear to the total number of HTML tags contained in Web pages, which indicates the potential applicability of STEM in a wide range of Web-scale data record extraction applications.     

面向云测试的并行测试用例自动生成方法

为实现云计算环境下的高效软件测试,提出一种Web 应用系统功能测试的并行测试用例自动生成方法。该方法首先根据场景流图采用深度优先遍历算法生成并行测试路径,录制组合产生并行测试脚本,并进行参数化处理;然后,使用基于搜索的软件测试(SBST)方法自动生成可经过目标路径的有效测试数据集,脚本与数据耦合形成大量可并行部署的自动化测试用例。为验证方法的有效性设计了自动化云测试原型系统。实验结果表明,该并行测试用例自动生成方法可以高效地为云平台提供测试用例输入,提高测试效率。     

Exploiting temporal information in Web search

Time plays important roles in Web search, because most Web pages contain temporal information and a lot of Web queries are time-related. How to integrate temporal information in Web search engines has been a research focus in recent years. However, traditional search engines have little support in processing temporal-textual Web queries. Aiming at solving this problem, in this paper, we concentrate on the extraction of the focused time for Web pages, which refers to the most appropriate time associated with Web pages, and then we used focused time to improve the search efficiency for time-sensitive queries. In particular, three critical issues are deeply studied in this paper. The first issue is to extract implicit temporal expressions from Web pages. The second one is to determine the focused time among all the extracted temporal information, and the last issue is to integrate focused time into a search engine. For the first issue, we propose a new dynamic approach to resolve the implicit temporal expressions in Web pages. For the second issue, we present a score model to determine the focused time for Web pages. Our score model takes into account both the frequency of temporal information in Web pages and the containment relationship among temporal information. For the third issue, we combine the textual similarity and the temporal similarity between queries and documents in the ranking process. To evaluate the effectiveness and efficiency of the proposed approaches, we build a prototype system called Time-Aware Search Engine (TASE). TASE is able to extract both the explicit and implicit temporal expressions for Web pages, and calculate the relevant score between Web pages and each temporal expression, and re-rank search results based on the temporal-textual relevance between Web pages and queries. Finally, we conduct experiments on real data sets. The results show that our approach has high accuracy in resolving implicit temporal expressions and extracting focused time, and has better ranking effectiveness for time-sensitive Web queries than its competitor algorithms.     

基于JSP技术的Web应用设计

JSP是服务器端的脚本环境 ,它是一种建立在 Java Servlet模型之上的表达层技术 ,可用于构建动态的、功能强大的、交互的 Web站点。介绍了 JSP技术的基本概念、工作原理、主要内建对象等 ,并从多角度阐述了基于 JSP技术的站点设计     

发现与切分复杂网页中的数据对象

提出了一种从复杂网页中发现和切分有用的数据对象的自动方法。文章比较来自于同一网站的相似网页,从而发现其内容的组织和结构。首先,通过剔除页面中无关的部件,获得干净的数据区,它覆盖了数据对象的描述。其次,我们切分数据区中属于不同数据对象的结点,并由此构造结构良好、具备自我解释能力的XML输出文件,其中每一个文件恰包含一个数据对象。用户可以很方便地进一步从这些文件中提取数据到数据库和模板。实验结果表明该方法是有效的。