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Posted on 2008-10-14
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Last Modified: 2012-08-13
I am taking ImageSnapshot of the flex component, i am sending this object to jsp page, I have to save this  object using request.setContectType(JPEG) on client  (Browser) location also client will able open it using jsp. attached code is the sample example which I did with flex. from flex i am sending this IImageSanpShot object to jsp. please let me know how will i write a jsp to save this image in JPEG format. I need JSP code, to receive this IimageSnapshot object. Can any body provide me sample jsp  file for this?
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
	
	<mx:Script>
		<![CDATA[
			import mx.graphics.codec.IImageEncoder;
			import mx.controls.Image;
			import mx.graphics.ImageSnapshot;
			import mx.controls.Alert;
			import mx.rpc.events.FaultEvent;
			import mx.graphics.codec.JPEGEncoder;
			
			[Bindable]
			private var buttonsEnabled : Boolean = true;
			[Bindable]
			private var imgData:Object;
			
			private function grabScreen() : Object
			{
				
				return ImageSnapshot.captureImage( chartsContainer, 0, JPEGEncoder as IImageEncoder  ) as Object;
			}
			
		private function exportImageToJPG() : void
			{
				
				buttonsEnabled = false;
				imgData = grabScreen();
				Alert.show("Sending imgData :->"+imgData.toString());
				httpService.send({"imgData":imgData});
			}
			
			
			private function onResult( message : String ) : void
			{
				
				Alert.show(message);
				buttonsEnabled = true;
			}
			
			private function onFault( event : FaultEvent ) : void
			{
				Alert.show("Server Fault: " + event.message);
				buttonsEnabled = true;
			}
			
		]]> 
	</mx:Script>
	
	<mx:Model id="data" source="sampleData.xml"/>
	
	
		
	<mx:HTTPService id="httpService" 
    	url="http://localhost:8080/export/SampleExport.jsp"
		result="onResult('Charts saved as JPG.')" method="POST" 
		resultFormat="object"
		fault="onFault(event)">
	
	</mx:HTTPService>
	<mx:Panel 
		title="Flex Charts Example for Screen Export"
		width="688" height="456" 
		layout="absolute"  
		horizontalCenter="0" 
		verticalCenter="0">
	
		<mx:Canvas width="100%" height="250" id="chartsContainer">
			
			<mx:HLOCChart 
				x="10" y="10" 
				id="hlocchart1" 
				dataProvider="{ data.item }" 
				width="320" height="240">
				
				<mx:series>
					<mx:HLOCSeries 
						openField="open" 
						closeField="close" 
						highField="high" 
						lowField="low"/>
				</mx:series>
			</mx:HLOCChart>
			
			<mx:PieChart 
				x="338" y="10" 
				id="piechart1" 
				dataProvider="{ data.item }" 
				width="320" height="240" >
				
				<mx:series>
					<mx:PieSeries 
						field="open" 
						labelPosition="inside" />
				</mx:series>
			</mx:PieChart>
			
		</mx:Canvas>
		
		<mx:DataGrid
			x="10" y="258" 
			width="648" height="118" 
			dataProvider="{ data.item }" />
	
		<mx:Button label="Export to Image" click="exportImageToJPG()" enabled="{ buttonsEnabled }"  x="10" y="384"/>
		
	</mx:Panel>
</mx:Application>

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Question by:ASHISHRAIK11
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3 Comments
 
LVL 23

Accepted Solution

by:
Siva Prasanna Kumar earned 500 total points
ID: 22711506
Your JSP sample code should look like this

<%@page import="java.io.*"%>
<%
String filename = "xyz.jpg";
String path = new String();

try {
ServletContext sc = this.getServletContext();
path = sc.getRealPath("/");
FileOutputStream fos = new FileOutputStream(path +"\\" + filename);
ServletInputStream instream = request.getInputStream();
int i=0;

while(i!=-1)
{
i=instream.read();
fos.write(i);
}
System.out.println("Created " + filename + " in " + path);
} catch (Exception e) {
out.println(e.printStackTrace());
}

%>

let me know if their are any issues.
0
 
LVL 19

Expert Comment

by:Gary Benade
ID: 22902306
please provide feedback or accept the answer above
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