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1、WebServiceServer概要设计WebServiceGroupIDKE,RUC2003.12.8outlineIntroductiontoWebServiceWebServiceemergenceWebServiceprincipleWebServicepredictionsWebServiceusageTechnologychallengesThearchitectureofWebServiceserverWebServiceEmergenceTheemergenceofthewebandofXMLFivemajorvendors(e.g.
2、,IBM,Microsoft,Oracle,HP,andSun)agreedtosupportWebServicesstandards:XML,SOAP,WSDL,UDDI,in1998BasedontheagreementsledbyMicrosoftandIBM,WebServiceswereintroducedasastandards-basedremoteserviceinvocationfortheInternet,inlate2000Middlewareandotherproductsemergeandothervendorsupport
3、thestandards,inmid2001WebServicePrincipleWebservicePredictionsInJan2001,GartnerpredictedthatWebServiceare“projectedasbeinginmainstreamusagewithinenterprisesby2002andbetweenenterprisesby2003/2004”In2002,TheYankeeGrouppredictedthatin2002/3therewouldbeinter-enterpriseusagebetweene
4、xistingpartners;in2003therewouldbedynamicdiscoveryandintegrationwithintheenterprise;andfinallyby2005therewouldbedynamicdiscoveryandintegrationwithoutsidepartners.InMarch2002Forresterpredicted,followingread-onlyWebServicesin2002,trustedtransactionsin2003;andcoordinationbetweenpa
5、rtnersin2004.WebservicePredictions(cont.)Inearly2002Gartnerpredictedthat“By2005,50%ofalltransactiondeliverynetworkandelectronicdatainterchangevalueaddednetworkswillimplementWebServicesandthuswillbecomeWebServicesnetworks(0.7probability).”InNovember2002Forresterpredictedthat“Web
6、ServicesforeshadowthenextbigthingfortheInternet:anetworkofthings,notpeople.By2006,thebulkoftheInternet’strafficwillbedigitalchatterbetweensoftware,note-mailorWebpagesaimedathumanusers.”WebServiceUsage65%enterprisesareinterestedinWebServicesinanApril2003GartnersurveyParticipants
7、usedWebServicesstandardsasfollows:87%ofrespondentuseXML;31%SOAP;3%WSDL;14%useUDDIMostWebServicestrialsaresmallandrestrictedtofinegrained,read-only,serviceinasingleapplicationdomainWebServiceUsage(cont.)Thereisalmostnointer-enterpriseusageofWebServices,dynamicdiscovery,orcomposi
8、tion.Directoryentryandmaintenanceismanualwithhandcoded
