AS3实现文件上传带进度条实例详解

<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" 
   xmlns:s="library://ns.adobe.com/flex/spark" 
    creationComplete="windowedapplication1_creationCompleteHandler(event)"
   xmlns:mx="library://ns.adobe.com/flex/mx">
<s:layout>
<s:BasicLayout/>
</s:layout>
<fx:Declarations>
<!-- 将非可视元素（例如服务、值对象）放在此处 -->
</fx:Declarations>
<fx:Script>
<![CDATA[
import cls.clsa;
import cls.clsb;
import cls.pcls;
import cls.tevent;

import flash.net.Socket;
import flash.net.dns.AAAARecord;

import mx.controls.Alert;
import mx.events.FlexEvent;


private var AI:cls.pcls=new clsa();
private var BI:cls.clsa=new clsa();

var i:Number=0;
private var timer:Timer=new Timer(30);

private var socket:Socket = new Socket(); 

private var uploadByteCnt:Number=1024*1024;
private var uploadCnt:Number=0;
var content:ByteArray=null;

protected function button1_clickHandler(event:MouseEvent):void
{

socket.addEventListener( Event.CONNECT, onConnect ); 
socket.addEventListener( flash.events.ProgressEvent.SOCKET_DATA,recieve);
socket.addEventListener( flash.events.IOErrorEvent.IO_ERROR,ioerror);
// Connect to the server 
socket.connect( "localhost", 4133 );

}
private function GetFileBytes():ByteArray{
var bytes:ByteArray=new ByteArray();
try{
var fullpath:String="c:\\bigpic.jpg";
var file:File=new File(fullpath);
var fstream:flash.filesystem.FileStream=new FileStream();
fstream.open(file,FileMode.READ);

fstream.readBytes(bytes,0,file.size);

fstream.close();
}catch(e){

}