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在Web服务描述语言(WSDL)与网络服务的本体语言(OWL-S)共存的环境中难以实现Web服务混合组合,为此提出一种以接口自动机为基础的混合Web服务组合方法。分析和描述WSDL与OWL-S间的关系后,在服务组合过程中用接口自动机实现WSDL与OWL-S自动识别和组合;并将服务组合结果与预先设定好的服务质量进行优化对比,选择服务质量最优的来实现不同的业务逻辑。最后通过一组旅游消费服务实验分析验证表明,该方法可行、有效,服务组合效率提高了5%~10%。 相似文献
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袁赟 《数字社区&智能家居》2007,(21)
近年来Web服务领域发生着翻天覆地的变化,继传统的XML-RPC风格的Web Service之后,一种新的风格,REST被应用于Web Service.本文主要介绍了Rest构架风格,以及现在Java开发Restful Web Service的主要方式,以及如何实现Restful Web Service的Java和Ajax客户端,最后介绍了Restful Web Service的描述语言WADL. 相似文献
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RESTful Web service composition with BPEL for REST 总被引:4,自引:0,他引:4
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随着Web服务技术的不断成熟和发展,互联网上出现了大量的公共Web服务.在使用Web服务开发软件系统的过程中,其文本描述信息(例如简介和使用说明等)可以帮助服务消费者直观有效地识别和理解Web服务并加以利用.已有的研究工作大多关注于从Web服务的WSDL文件中获取此类信息进行Web服务的发现或检索,调研发现,互联网上大部分Web服务的WSDL文件中普遍缺少甚至没有此类信息.为此,提出一种基于网络信息搜索的从WSDL文件之外的信息源为Web服务扩充文本描述信息的方法.从互联网上收集包含目标Web服务特征标识的相关网页,基于从网页中抽取出的信息片段,利用信息检索技术计算信息片段与目标Web服务的相关度,并选取相关度较高的文本片段为Web服务扩充文本描述信息.基于互联网上的真实数据进行的实验,其结果表明,可为约51%的互联网上的Web服务获取到相关网页,并为这些Web服务中约88%扩充文本描述信息.收集到的Web服务及其文本描述信息数据均已公开发布. 相似文献
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Synthy: A system for end to end composition of web services 总被引:2,自引:0,他引:2
Vikas Agarwal Girish Chafle Koustuv Dasgupta Neeran Karnik Arun Kumar Sumit Mittal Biplav Srivastava 《Journal of Web Semantics》2005,3(4):311-339
The demand for quickly delivering new applications is increasingly becoming a business imperative today. However, application development is often done in an ad hoc manner resulting in poor reuse of software assets and longer time-to-delivery. Web services have received much interest due to their potential in facilitating seamless business-to-business or enterprise application integration. A web service composition system can help automate the process, from specifying business process functionalities, to developing executable workflows that capture non-functional (e.g. Quality of Service (QoS)) requirements, to deploying them on a runtime infrastructure. Intuitively, web services can be viewed as software components and the process of web service composition similar to software synthesis. In addition, service composition needs to address the build-time and runtime issues of the integrated application, thereby making it a more challenging and practical problem than software synthesis. However, current solutions based on business web services (using WSDL, BPEL, SOAP, etc.) or semantic web services (using ontologies, goal-directed reasoning, etc.) are both piecemeal and insufficient. We formulate the web service composition problem and describe the first integrated system for composing web services end to end, i.e., from specification to deployment. The proposed solution is based on a novel two-staged composition approach that addresses the information modeling aspects of web services, provides support for contextual information while composing services, employs efficient decoupling of functional and non-functional requirements, and leads to improved scalability and failure handling. We also present Synthy, a prototype of the service composition system, and demonstrate its effectiveness with the help of an application scenario from the telecom domain. 相似文献
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当前Internet的发展趋势是事务性Web,这需要解决相关的Web服务的事务性语义问题,以保证Web服务整个处理流程的完整性和可靠性。传统的事务模型以及分布式对象事务系统不再适用于新的Web环境下的要求。在总结相关工作的基础上,本文提出利用LRUOW HLS模型以及扩展WSDL规范以实现并声明事务性Web服务;并研究了扩展AS基础系统结构以解决集成Web服务的事务性的可能性。 相似文献
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本文探讨了最新的技术趋势Web Service以及其关键技术XMI、SOAP、WSDL、UDDI,然后对网上社保系统进行了详细的分析,给出了系统操作流程图,对系统模块的功能做了详尽的描述,同时还给出了系统中的服务分布及其功能描述,接着采用Web Service技术对网上社保系统进行设计,给出了系统设计说明。 相似文献
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Web Service技术研究 总被引:3,自引:0,他引:3
Web Service是一种面向服务的分布式计算模式,具有良好的、真正意义上的系统平台异构性和语言的独立性。本文首先介绍了Web Service的基本概念和特点。阐述了Web Service的核心技术:SOAP,WSDL,UDDI。最后分析了Web Service的安全性. 相似文献
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Web Service在工业过程监控系统中的应用 总被引:1,自引:0,他引:1
研究了Web Service,XML,SOAP,WSDL,UDDI等相关网络技术,以及基于XML Web Service服务架构技术在过程监控领域中的应用。由于采用了web Service技术构建实时工业过程监控服务器,实现了监控平台跨越应用系统的对象体系、运行平台、开发语言等界限,以服务的形式封装应用并对外发布,提供用户或其他平台调用,从而形成了基于Web的服务的监控共享平台。以实际例子介绍了Web Service应用的具体方案。 相似文献
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从系统架构和功能需求分析入手,介绍了基于CORBA/Web Service技术开发的PDM图档管理系统,着重阐述了系统开发中的关键技术:IDL到WSDL的映射和CORBA对象的Web Service封装。针对CORBA现有IDL到WSDL映射规范中对复杂数据类型和接口继承的支持不够的情况下,提出了可以满足实际应用需求的映射规则,并实现了一个映射编译器——IDLW,从而实现了Internet范围内的图档数据访问和管理。 相似文献
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In recent years, due to the emergence of ubiquitous computing technology, a new class of networked robots called ubiquitous robots has been introduced. The Ubiquitous Robotic Companion (URC) is our conceptual vision of ubiquitous service robots that provides its user with the services the user needs, anytime and anywhere, in the ubiquitous computing environments. There are requirements to be met for the vision of URC. One of the essential requirements is that the robotic systems must support ubiquity of services. This means that a robot service must always be available even though there are changes in the service environment. More specifically, a robotic system needs to be interoperable with sensors and devices in its current service environments automatically, rather than statically pre-programmed for its environment. In this paper, the design and implementation of an infrastructure for URC called Ubiquitous Robotic Service Framework (URSF) is presented. URSF enables automated integration of networked robots in a ubiquitous computing environment by the use of Semantic Web Services Technologies. 相似文献