利用FluorineFx的ByteArray上传图片

Flex端利用new PNGEncoder().encode(bitmapData)将png图片转换为ByteArray，然后传给服务器，服务端需要定义一个public ByteArray UploadImage(ByteArray ba)方法

服务器端相关代码

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Drawing;
using System.Web;
using FluorineFx;
using FluorineFx.AMF3;
namespace ServiceLibrary5
{
    [RemotingService]
    public class ByteStreamService
    {
        public ByteArray UploadImage(ByteArray ba)
        {
            MemoryStream ms = new MemoryStream(ba.GetBuffer());
            Image img = Bitmap.FromStream(ms);
            Bitmap newImage = new Bitmap(img);
            MemoryStream tempStream = new MemoryStream();
            newImage.Save(tempStream, System.Drawing.Imaging.ImageFormat.Png);
            string path = HttpContext.Current.Server.MapPath("UpLoad/ByteArray.png");
            FileStream fs = new FileStream(path, FileMode.Create);
            tempStream.WriteTo(fs);
            fs.Close();
            ByteArray result = new ByteArray(tempStream);
            return result;
        }
    }
}

Flex端相关代码

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
 <mx:Panel x="28" y="58" width="364" height="417" layout="absolute">
  <mx:Canvas id="myCanvas" x="0" y="0" width="334" height="331" 
   mouseDown="onMouseDown()" mouseUp="onMouseUp()" mouseMove="onMouseMove()">
  </mx:Canvas>
  <mx:ControlBar x="135" y="459">
   <mx:ColorPicker change="curColor = event.target.selectedColor" />
   <mx:Button label="清空" click="onClear()" />
   <mx:Button label="保存" click="onSave()" />
  </mx:ControlBar>
 </mx:Panel>
 <mx:Image id="imgBox" x="462" y="83"/>
 <mx:Script>
  <![CDATA[
   import mx.core.UIComponent;
   import mx.containers.Box;
   import mx.controls.Alert;
   import mx.rpc.events.ResultEvent;
   import mx.graphics.codec.PNGEncoder;
   private var flag:Boolean = false;
   private var startX:int;
   private var startY:int;
   private var curColor:uint = 0x000000;
  
   private function onSave():void
   {
    var bd:BitmapData = new BitmapData(myCanvas.width,myCanvas.height);
    bd.draw(myCanvas);
    var byteArray:ByteArray = new PNGEncoder().encode(bd);
    
    var nc:NetConnection = new NetConnection();
    nc.client = this;
    var responder:Responder = new Responder(onResult,onStatus);
    nc.connect("http://localhost:9782/Web/Gateway.aspx");
    nc.call("ServiceLibrary5.ByteStreamService.UploadImage",responder,byteArray);
   }
   
   private function onResult(result:ByteArray):void
   {
    //利用Loader读取图片
    var loader:Loader = new Loader();
    loader.contentLoaderInfo.addEventListener(Event.COMPLETE,onComplete);
    loader.loadBytes(result);
   }
   
   private function onComplete(event:Event):void
   {
    //利用UIComponent加载Loader对象
    var loader:Loader = (event.target  as  LoaderInfo).loader;
    loader.contentLoaderInfo.removeEventListener(Event.COMPLETE,onComplete);
                var pictureHolder:UIComponent = new UIComponent();
    pictureHolder.addChild(loader);
    this.imgBox.width = myCanvas.width;
    this.imgBox.height = myCanvas.height;
    this.imgBox.addChild(pictureHolder);
   }
   
   private function onStatus(obj:Object):void
   {
    Alert.show(obj.code.toString());
   }
  
   private function onClear():void
   {
    myCanvas.graphics.clear();
   }
  
   private function onMouseDown():void
   {
    startX = myCanvas.mouseX;
    startY = myCanvas.mouseY;
    flag = true;
   }
   
   private function onMouseUp():void
   {
    flag = false;
   }
   
   private function onMouseMove():void
   {
    if(flag)
    {
     myCanvas.graphics.moveTo(startX,startY);
     myCanvas.graphics.lineStyle(2,curColor);
     myCanvas.graphics.lineTo(myCanvas.mouseX,myCanvas.mouseY);
     
     startX = myCanvas.mouseX;
     startY = myCanvas.mouseY;
    }
   }
  ]]>
 </mx:Script>
</mx:Application>