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1、西南交通大學(xué)碩士學(xué)位論文Ajax/SVG技術(shù)及其在WebGIS中的應(yīng)用研究姓名：黃濤申請學(xué)位級別：碩士專業(yè)：計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師：齊華20080601西南交通大學(xué)碩士研究生學(xué)位論文第Ⅱ頁AbstractInthelastfewyears，alongwithGIStechnologyandInternettechnologyunceasingdevelopment，WebGIShaswidespreadapplication．BecauseGIShascharacteristicofquantitybigdataandrapidre
2、sponseandSOon，classicWebGISalreadycouldnotwellsatisfywithbrowsingexperienceofuser,likeslowresponseofsystem，appearance”whitescreen”phenomenonandSOon．Becauseajaxengineselectsasynchronousmethodtotransmittherequestofuser,SOithassolvedstructureproblemofclassicwebapplication
3、andimproveduserexperience，itWasappliedinmanywebapplications．LightweightajaxenginetechnologybasedonWebGIShasbeenstudiedunderajaxtechnologyandtheenginehasbeenappliedinWebGISbasedonSVGvectormapinpaper．ThegoalisimproveuserexperienceandperformanceofclassicWebGIS．Mainresearc
4、hworksinthispaperareasfollows：·MethodforbasicAjaxengineunder．NET；●MethodforlightweightAjaxengine；●OrganizationandcodingschemeforgeographicspatialdatabasedonSVG；●TransformationmethodforgeographicspatialdatatoSVGdata．SystemmodelofWebGISbasedonajaxandSVGtechnologyhasbeend
5、esigned；systemclient’SfunctionshavebeenrealizedbySVGDOMtechnologyandsystemserver’sfunctionshavebeenrealizedbyOracleODENETandSpatialtechnologiesinthispaper．Itisshownthat，comparedwithclassicWebGIS，WebGISbasedonajaxandSVGtechnologieshasmanyadvantagesasfollows：●Refreshingm
6、apneednottoloadallpagesandtheoperationiscoherent．●Systemresponseispromptanduser’swaitingtimeisshort．●Somefunctionsofserveraretransferredtoclient，thusloadingbalancebetweenclientandserverisresolved．ItCanbebelievedthat，WebGISbasedonajaxandSVGtechnologyCangive西南交通大學(xué)碩士研究生學(xué)位
7、論文第Ⅲ頁fulladvantagesofbothAjaxandSVGtechnologies，usingAjaxtoachieverefreshupdatemapandusingSVGtoexpressno—zoommaps．ItwillimproveuserexperienceofWebGISbaseOilSVGmapandithasthemodelsignificancetotheWebGISfurtherdevelopment．KeyWords：Ajax，SVG,WebGIS，OracleSpatial西南交通大學(xué)碩士研究生
8、學(xué)位論文第71頁縮略詞1．AjaX—一As)，nchronousJavaScriptAndXML，異步的JavaScfipt和XML。2．ASP-_—．ActiveServerPage，活動服務(wù)器頁面3．C¨omputerAssita
