WEB320:

XML,Web服務(wù)及.NET概述

日程：什么是.NET?Internet歷程和現(xiàn)在的問題為什么用XML和WebServices？

SOAP,WSDL

等基于XML的標(biāo)準(zhǔn)微軟的開發(fā)WebServices工具微軟現(xiàn)有產(chǎn)品和服務(wù)向.NET模式發(fā)展應(yīng)用.NET測試版并行開發(fā)的客戶情況心得共享Microsoft.NET三層含義：預(yù)見Vision:網(wǎng)站間及企業(yè)內(nèi)部將大量使用WebService工具:

微軟正在開發(fā)最好的工具：VisualStudio.NET產(chǎn)品:

微軟現(xiàn)有產(chǎn)品和服務(wù)向.NET模式發(fā)展,

直接支持XMLandwebservice.3rdGenerationInternet

DistributedComputingFutureInternet=大計算機(jī)伙伴網(wǎng)站，供應(yīng)鏈，被合并的企業(yè)，不同系統(tǒng)間用WebService連接XML,SOAP,WSDL,WebServiceWebServiceRichPCClientsandDevicesRich

Servers為什么用XML?HTML的缺點:摻雜一起，難以修改，更新不同顯示設(shè)備需要分別編程程序員和美工設(shè)計員協(xié)作難度大網(wǎng)站之間難于共享資源，降低成本XML將數(shù)據(jù)和表現(xiàn)方式分開,解決了以上問題業(yè)界已經(jīng)認(rèn)同的標(biāo)準(zhǔn)在XML基礎(chǔ)上發(fā)展了SOAP,WSDL及UDDI等協(xié)議什么是WebService?為其它應(yīng)用程序提供數(shù)據(jù)或服務(wù)的“類庫”使用HTTP，XML，SOAP等標(biāo)準(zhǔn)協(xié)議集COM組件開發(fā)和Web所長于一體是Microsoft.NETvision

的核心TraditionalNetworkingApproaches

傳統(tǒng)網(wǎng)絡(luò)方式Winsock,RPC,DCOMWinsock復(fù)雜，需編大量程序.RPCandDCOM依賴操作系統(tǒng)不易穿越防火墻和代理服務(wù)器WebService方式共享代碼SharedCode自帶網(wǎng)絡(luò)功能NetworkSupportbuiltin真正跨平臺的標(biāo)準(zhǔn)Trulycross-platform不需要發(fā)布和安裝組件DoesnotrequireinstallationofanapplicationspecificDLLorCOMcomponentEasytousefromyourownapplicationsTemperatureServicerunningonApacheSOAPStockQuoteServicerunningonTheMindElectric’sGLUENewsServicerunningonSQLDataSystems’,Inc.SOAPServerIISusingASPandSOAPToolkitv2FavoritesServicerunningonMicrosoftSOAPToolkitv2WSDLWebServiceStandardsWSDLHTTPSOAP(XML)TCP/SSLUDDIDISCOClientWebService什么是SOAP?SimpleObjectAccessProtocol(SOAP)XMLbasedmessageformatAmongotherthings,SOAPcanrepresentremoteprocedurecallsandresponses

實現(xiàn)遠(yuǎn)程調(diào)用ProvidesaflexiblewaytoexpressapplicationdefineddatatypesSOAPOverHTTP能通行防火墻

Canworkthroughexistingproxiesandfirewalls利用HTTPauthentication

認(rèn)證支持SecureSocketLayer(SSL)ASOAPResponse<SOAP-ENV:Envelopexmlns:SOAP-ENV=“”><SOAP-ENV:Header><CustomHeaderTID=“011F28”/></SOAP-ENV:Header><SOAP-ENV:Body><m:GetBattingAverageResponsexmlns:m=“”><m:BattingAverage>311</m:BattingAverage></m:GetBattingAverageResponse></SOAP-ENV:Body></SOAP-ENV:Envelope>什么是WSDL?WebServicesDescriptionLanguage(WSDL)用于定義Webinterface接口的協(xié)議基于XMLCandefineaschemaforanyinterface

(notjustSOAP)定義節(jié)點endpoints

其它標(biāo)準(zhǔn)UDDI–UniversalDescriptionDiscoveryIntegrationXMLextensionsXMLSignatureSyntaxXMLEncryptionDirectInternetMessageEncapsulation(DIME)ProtocolsbuiltonSOAPXMLforAnalysis(DataAccess)Others多系統(tǒng)兼容性真正的跨平臺技術(shù)Useofstandardsallowsforcross-platformsupport—whetheryoudemanditnoworwantplatformflexibilityforthefutureUsingstandardprotocolsmeansweworkonyourexistingHTTPinfrastructureWebService應(yīng)用分類FreeInternet

免費服務(wù)政府公共信息，產(chǎn)品目錄LicensedInternet

收費服務(wù)股票實時報價，BusinesstoBusiness訂單，庫存，服務(wù)請求的跟蹤Intranet

跨平臺，集成網(wǎng)站內(nèi)容WebService帶來機(jī)會和挑戰(zhàn)顧問服務(wù)，系統(tǒng)集成主機(jī)托管服務(wù)：對大型服務(wù)商有利網(wǎng)站廣告交換業(yè)務(wù)開發(fā)周期，運行速度，還有錢嗎？CommerceServer2000最好的B2C網(wǎng)店軟件包產(chǎn)品目錄管理,訂單管理分析模塊（用戶/產(chǎn)品/流量/市場活動有效性）UserProfile個性化促銷郵件協(xié)同BiztalkServer完成供應(yīng)商集成產(chǎn)品目錄，訂單，用戶服務(wù)，遠(yuǎn)程購物車Biztalk:傳統(tǒng)應(yīng)用擴(kuò)展到Web服務(wù)方式文件映像/轉(zhuǎn)換器mapperBusinessProcessIntegrationYourBusinessSupplierC

CommerceServerWindows2000Windows2000BizTalkServerInventory

Order

fulfillment

CustomersHRSystemBankSupplierB

Federated

Passport

SupplierA

IdentityFoundation

Service:Passport

.NETFramework&VS.NET

EarlyAdoptionSuccessesToday……AndMoretoCome我們發(fā)現(xiàn)…Developerenthusiasmfor.NETVerypositiveresponseforthedevelopmenttoolsWebservices–soeasyFairlyeasyskillsupgradetoVB.NETVeryeasyforJavadeveloperstoswitchtoC#ScandinavianAirlines

現(xiàn)有VB6,COM+applicationWantedtoextendittomobiledevicesChose.NETplatformbecause:Lowdevelopment,maintenancecostEasytoadministrateovertimeInitiallyplannedjusttodorebookingExtendedittoaddXMLWebServiceGetFlightStatusRegisteredinUDDIDeviceCapabilitiesTakeadvantageofthefeaturesetSeatassignment,gateinfoVoicerecognitiononPocketPCContinentalAirlines

現(xiàn)有COM+,VB6platformExtendtosupport:FlightStatusWeatheratdestinationairportsMileageProgram(OnePass)KeyfactorsCost,TimetomarketBusinessReasonMaintainleadershiproleBestcustomersareveryITsavvyHav