基于Flex访问Arcgis Server的rest API中的Geometry server 坐标

参考：http://dcec226:8399/arcgis/sdk/rest/index.html?mapserver.html

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
			   xmlns:s="library://ns.adobe.com/flex/spark" 
			   xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">
	
	<fx:Script>
		<![CDATA[
			import mx.controls.Alert;
			import mx.rpc.events.FaultEvent;
			import mx.rpc.events.ResultEvent;

			protected function btnSend_clickHandler(event:MouseEvent):void
			{
				var params:URLVariables = new URLVariables();

				var url:String="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer/project";
				srv.url=url;
			
				params.inSR="4326";
				params.outSR="102113";	
				params.geometries="{'geometryType':'esriGeometryPoint','geometries':[{'x':-117,'y':34}]}";
				params.f="pjson";
				srv.send(params);
			}
			
			private function gotResult(event:ResultEvent):void{  
				Alert.show(event.result as String);  
			} 			
			
			private function gotError(event:FaultEvent):void{  
				Alert.show(event.toString());  
			}  
			
		]]>
	</fx:Script>
	
	<fx:Declarations>
		<mx:HTTPService id="srv" result="gotResult(event);" useProxy="false" fault="gotError(event)"/>
	</fx:Declarations>
	<s:Button id="btnSend" label="调用" click="btnSend_clickHandler(event)"/>
</s:Application>

HTTPService传送参数的第二种方式

    <fx:Declarations>
        <!-- 将非可视元素（例如服务、值对象）放在此处 -->
        <!--定义HttpService发送请求-->
        <s:HTTPService id="service" 
                       url="http://localhost:8080/testhttpservice/testHttpServiceServlet" 
                       useProxy="false" 
                       fault="service_faultHandler(event)" 
                       result="service_resultHandler(event)">          
            <s:request >
                <!--参数名称作标签,中间填充参数值-->
                <username>{txtusername.text}</username>
                <password>{txtpassword.text}</password>
            </s:request>
        </s:HTTPService> 
    </fx:Declarations>