Flex 上传摄像头拍照、UI保存为图片

flex客户端代码：

<?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" creationComplete="application1_creationCompleteHandler(event)">  
	<fx:Script>  
		<![CDATA[  
			import mx.controls.Alert;
			import mx.core.UIComponent;
			import mx.events.FlexEvent;
			import mx.graphics.codec.JPEGEncoder;
			import mx.rpc.events.FaultEvent;
			import mx.rpc.events.ResultEvent;
			import mx.utils.UIDUtil;  
			
			protected function application1_creationCompleteHandler(event:FlexEvent):void  
			{  
				initCamera(videoDis);
			}  
			
			//初始化Camera控件，并添加在VideoDisplay
			public function initCamera(videoDis:UIComponent):void
			{
				var myCamera:Camera = Camera.getCamera();//获取客户端摄像头  
				myCamera.setMode(500,500,30);  
				
				var myVideo:Video = new Video(500,500);  
				myVideo.attachCamera(myCamera);//获取摄像头的视频流  
				
				videoDis.addChild(myVideo);
			}
			
			//将可视的UIComponent组件转换为图片   
			public function UItoBitmap(source:UIComponent,target:UIComponent):void    
			{      
				var width :int = source.width;      
				var height :int = source.height;      
				var bitmapData:BitmapData =new BitmapData(width,height);      
				bitmapData.draw(source,new Matrix());      
				
				var bitmap:Bitmap=new Bitmap(bitmapData);    
				
				var uic:UIComponent = new UIComponent();     
				uic.addChild(bitmap);     
				target.addChild(uic);     
			}   
			
			
			//将可视的UIComponent组件保存为本地图片    
			public function UISaveAsImg(imgID:UIComponent):void    
			{    
				var width :int = imgID.width;      
				var height :int = imgID.height;      
				var bitmapData:BitmapData =new BitmapData(width,height);      
				bitmapData.draw(imgID);      
				
				var byteArr:ByteArray = bitmapData.getPixels(new Rectangle(0,width,height));     
				var byteArr123:ByteArray  =new JPEGEncoder().encodeByteArray(byteArr,height);     
				
				var fileRefer:FileReference = new FileReference();     
				fileRefer.save(byteArr123,UIDUtil.createUID()+".png");      
				fileRefer.addEventListener(Event.COMPLETE,function completeHandler():void{    
					Alert.show("保存本地成功");      
				});    
			}   
			

			//照片上传到服务器
			protected function upLoadImg(imgID:UIComponent):void
			{
				var width :int = imgID.width;      
				var height :int = imgID.height;      
				var bitmapData:BitmapData =new BitmapData(width,height);  
				
				webService.UploadFile(byteArr123,"123.png");
			}


			protected function webService_faultHandler(event:FaultEvent):void
			{
				Alert.show(event.fault.toString());
			}
			protected function webService_successHandler(event:ResultEvent):void
			{
				Alert.show(event.result.toString());
			}

		]]>  
	</fx:Script>  
	<fx:Declarations>  
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->  
		<s:WebService id="webService" wsdl="http://10.19.1.48/upImg/Service1.asmx?WSDL" fault="webService_faultHandler(event)">  
			<s:operation name="UploadFile" result="webService_successHandler(event)"></s:operation>  
		</s:WebService>  
	</fx:Declarations>  
	<s:VideoDisplay id="videoDis" width="500" height="500" click="UItoBitmap(videoDis,t_img_Picture),UItoBitmap(videoDis,content)" toolTip="点击拍照"></s:VideoDisplay> 
	<mx:DateChooser id="myDate" x="62" y="508"  click="UItoBitmap(myDate,UItoBitmap(myDate,content)" toolTip="点击拍照"/>  
	
	<mx:Image id="t_img_Picture" x="522" y="0" width="500" height="500" click="UISaveAsImg(t_img_Picture)" toolTip="点击保存本地"/>  
	<mx:Canvas id="content" x="500" y="300" width="500" height="500" click="UISaveAsImg(content)" toolTip="点击保存本地"></mx:Canvas>   
	
	<s:Button x="305" y="537" label="上传" width="130" height="64" click="upLoadImg(t_img_Picture)"/>
	
</s:Application>  

webservice代码：

        /// <summary>  
        /// 上传文件到远程服务器  
        /// </summary>  
        /// <param name="fileBytes">文件流</param>  
        /// <param name="fileName">文件名</param>  
        /// <returns>字符串</returns>   
        [WebMethod(Description = "上传文件到远程服务器.")]
        public string UploadFile(byte[] fileBytes,string fileName)
        {
            try
            {
                MemoryStream memoryStream = new MemoryStream(fileBytes); //1.定义并实例化一个内存流，以存放提交上来的字节数组。  
                FileStream fileUpload = new FileStream(Server.MapPath(".") + "" + fileName,FileMode.Create); ///2.定义实际文件对象，保存上载的文件。  
                memoryStream.WriteTo(fileUpload); ///3.把内存流里的数据写入物理文件  
                memoryStream.Close();
                fileUpload.Close();
                fileUpload = null;
                memoryStream = null;
                return "文件已成功上传至服务器";
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
        }