WebService技术及其应用

WebService技术浅析及其实际应用TheTechnicalAnalysisandpracticalapplicationofWebServiceI摘要随着电子商务技术的快速发展，原来那种基于特定系统和特定环境的开发方式逐渐无法适应新的需求变化。WebService技术的出现，给异构系统间的商务应用集成带来了前所未有的希望。本文主要介绍了WebService技术和WebService技术在实际应用中的一个例子。WebService技术是通过构筑一个通用的、与平台和语言无关的技术层，使得各种不同平台上的应用系统间，实施彼此的连接和集成。本文首先对WebService技术进行了简介，在了解它的使用情况和优缺点后，对它和目前现有分布式CORBA技术进行了分析和对比，进而对它的体系结构有深入的了解。其次介绍了WebService技术中的关键技术，其中包括可扩展性标记语言（XML）、简单对象访问协议（SOAP）、Web服务描述语言（WSDL）和统一描述、发现与集成（UDDI）注册中心。最后本文依据WebServices的技术原理、体系架构及关键技术，提出了一个WebServices技术在旅游系统中的应用。关键词：WebService技术；CORBA技术；XML；SOAP；WSDL；UDDI协议IIAbstractWiththerapiddevelopmentofe-commercetechnology,thoseoriginaldevelopingmethodswhicharebasedonspecificsystemandenvironmentareunabletoadapttothenewlychangingrequirements.TheWebservicetechnologybringstheunprecedentedprospecttothebusinessapplicationintegrationoftheheterogeneoussystem.ThisarticleintroducestheconceptofWebservice,andbringsoutanexampleinaparticleapplication.WebServicetechnologyimplementsamutualconnectionandintegrationbetweentheapplicationsystemsinvarietyplatformsthroughbuildinganall-purposetechnologylayerwhichisunrelatedtoanyplatformsandlanguages.WefirstlybriefstheWebservicetechnology,thenmakesancomparisonandanalysisbetweentheWebServiceandthedistributedCORBAafterknowingitsusageconditionanditsadvantagesanddisadvantages,andthenformadeeperunderstandingtoitsarchitecture.Secondly,thekeytechnologiesinWebserviceareintroduced,includingExtensibleMarkupLanguage(XML),SimpleObjectAccessProtocol(SOAP),WebServicesDescriptionLanguage(WSDL)andUniversalDescription,DiscoveryandIntegration(UDDI)registry.Finally,atourismsystemapplicationbasedonthetechnicalprinciples,systematicarchitectureandkeytechnologiesofWebserviceisbroughtforwardinthisarticle.Keywords:WebServicetechnology;CORBAtechnology;XML;SOAP;WSDL;UDDIprotocolIII目录第一章引言..............................................................................................................11.1选题的背景和意义........................................................................................11.2选题的研究现状............................................................................................11.3选题要研究的主要内容................................................................................1第二章WebService技术的简介.................................................................................22.1WebService技术的出现..................................................................................22.2WebService技术概述......................................................................................32.3WebService技术的体系结构..........................................................................32.4WebService技术的工作流程..........................................................................52.5WebService技术的优缺点..............................................................................52.5.1WebService技术的优点.......................................................................52.5.2WebService技术的缺点.......................................................................8第三章WebService技术与CORBA技术...................................................................93.1CORBA技术的简介.......................................................................................93.2WebService技术和CORBA技术..................................................................10第四章WebService技术中的关键技术...................................................................124.1XML..............................................................................................................124.1.1简介...................................................................................................124.1.2XML和HTML的差异........................................................................124.2SOAP.............................................................................................................134.3WSDL和UDDI规范......................................................................................144.3.1WSDL.................................................................................................144.3.2UDDI..................................................................................................15第五章WebService技术在旅游信息系统中的应用...............................................185.1方案论证......................................................................................................185.1.1旅游信息系统的结构.......................................................................185.1.2系统功能方案...................................................................................185.2系统功能方案..............................................................................................21IV5.2.1系统的体系结构...............................................................................215.2.2电子地图功能与实现.......................................................................225.2.3地图查询功能与实现.......................................................................255.2.4信息发布功能与实现.......................................................................305.2.5电子商务功能....................................................