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1、AbstractThemodelofbuildingthesystemisadoptingopen.sourcedatabasePostgreSQLenhancedwithPostGIStosavedata,adoptingopen-sourcemapserverGeoservertoprovidemapservice,adoptingopen-sourceJavaScriptlibraryOpenlayerstobuildthemapclient,andonthebasisofthesebusin
2、esslogicisencodedwithJavaprogramlanguage.Asthesystem’Sperformanceintherunningtimeshowed,whenthecomputescaleiSmiddle·sizedorsmaller,WebGISbasedonopen.sourceGISplatformiscapableofmeetingthedemandofwaterresourceinformationmanagementwithlowercost,andiSwort
3、hatryonrealizationofGISapplication.Keywords:Open-Source;WebGIS;waterresource;Geoserver;Openlayers;PostgreSQLIii目錄1引言????????????????????????????????.11.1研究背景及意義??????????????????????。l1.2研究現(xiàn)狀??????????????????????????21.2.1國外研究現(xiàn)狀???????????????????????
4、?21.2.2國內(nèi)研究現(xiàn)狀????????????????????????31.3研究內(nèi)容?????????????????????????。42開源WebGIS????????????????????????52.1GIS???????????????????????????????????。52.1.1GIS定義??????????????????????????????????。52.1.2GIS發(fā)展歷程????????????????????????.52.1.3GIS發(fā)展趨勢???????
5、?????????????????62.2WebGIS?????????????????????????????????.82.2.IWebGIS概念????????????????????????????????.82.2.2WbbGIS特點????????????????????????????????.82.2.3WebGIS結(jié)構(gòu)模式??????????????????????102.2.4WebGIS實現(xiàn)技術(shù)??????????????????????ll2.3開發(fā)技術(shù)???????????
6、??????????????l32.3.1J2EE????????????????????????????????????.132.3.2XML??????????????...?????????????????????142.3.3JSP?????????????????????????????????????l52.3.4JavaScript?????????????????????????????????..162.3.5Ajax?.??????????????????????????????
7、?????.172.4開源GIS??????????????????????????????。l82.4.1開源軟件?????????????????????????..182.4.2開源GIS平臺???????????????????????.19IV’目錄3系統(tǒng)總體設(shè)計???????????????????????..243。l設(shè)計原則????????????????????????..243.2系統(tǒng)架構(gòu)?????????????????????????.243.3數(shù)據(jù)庫設(shè)計??????????
8、??????????????253.3.1數(shù)據(jù)庫框架????????????????????????.263.3.2空間數(shù)據(jù)庫????????????????????????.263.3.3業(yè)務(wù)數(shù)據(jù)庫????????????????????????.273.4GIS功能設(shè)計??????????????????????。273.4.1地圖服務(wù)?????????????????????????????????..273.4.2常用GIS功能????????????????