NAServer+Flex实现最短路径功能.docxVIP

使用NAServer在Web端实现最短路径分析功能。相关操作：在ArcGIS中建立交通网络数据集，打开ArcMap，在扩展模块（Extensions）中勾选NetWork Analyst功能，选择New Route功能，和道路网一起保存为地图文档，发布到GIS Server中，发布成Map Service，在后续选项中选择NetWork Analysis，在最终服务器文档中可以看到一个MapServer和NAServer.下面两个地址中一个为NAServer地址，一个为MapServer地址。?xml version=1.0 encoding=utf-8?s:Applicationxmlns:fx=/mxml/2009xmlns:s=library:///flex/sparkxmlns:esri=/2008/agsinitialize=initApp()pageTitle=Routing while avoiding bad spotss:layouts:VerticalLayoutpaddingTop=15//s:layoutfx:Script![CDATA[importcom.esri.ags.FeatureSet;importcom.esri.ags.Graphic;importcom.esri.ags.events.MapMouseEvent;importcom.esri.ags.events.RouteEvent;importcom.esri.ags.symbols.CompositeSymbol;importcom.esri.ags.symbols.TextSymbol;importcom.esri.ags.tasks.supportClasses.RouteResult;importmx.controls.Alert;importmx.rpc.events.FaultEvent;[Bindable]privatevarstops:FeatureSet = new FeatureSet([]);[Bindable]privatevarbarriers:FeatureSet = new FeatureSet([]);[Bindable]privatevarselectedBtn:ToggleButton;[Bindable]privatevarlastRoute:Graphic;private function initApp():void{selectedBtn = addStopsBtn;}private function mapClickHandler(event:MapMouseEvent):void{if (selectedBtn == addStopsBtn){varstopSymbol:CompositeSymbol = new CompositeSymbol();varcircleSym:SimpleMarkerSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_CIRCLE, 20, 0x000099);vartextSym:TextSymbol = new TextSymbol(String(stops.features.length + 1));textSym.textFormat = new TextFormat(Verdana, null, null, true);textSym.color = 0xFFFFFF;stopSymbol.symbols = [ circleSym, textSym ];varstop:Graphic = new Graphic(event.mapPoint, stopSymbol);inputsLayer.add(stop);stops.features.push(stop);}else{varbarrier:Graphic = new Graphic(event.mapPoint, barrierSymbol);inputsLayer.add(barrier);barriers.features.push(barrier);}if (stops.features.length 1){routeTask.solve(routeParams);}}private function solveCompleteHandler(event:RouteEvent):void{varrouteResult:RouteResult = event.routeSolveResult.routeResults[0];lastRoute = routeResult.route;lastRoute.toolTip