[AIR] AS3读取txt文档

package 
{
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.filesystem.File;
    import flash.filesystem.FileMode;
    import flash.filesystem.FileStream;
    import flash.net.URLLoader;
    import flash.net.URLRequest;
    import flash.system.System;
    import flash.text.TextField;
    /**
     * ...
     * @author Frost.Yen
     */
    public class Main extends Sprite
    {
        private var _t:TextField;
        public function Main()
        {
            System.useCodePage = true;//解决中文乱码问题
            _t = new TextField();
            _t.autoSize = "left";
            this.addChild(_t);
            readTxt();//方法一（仅限AIR）
            //loadTxt();//方法二
        }
        private function readTxt():void
        {
            var file:File = new File(File.applicationDirectory.nativePath + "/新建文本文档.txt");
            var stream:FileStream = new FileStream();    //创建FileStream对象
            stream.open(file,FileMode.READ);    //使用FileStream对象以只读方式打开File对象
            //将文件中的所有信息显示在文本区域中
            _t.text = stream.readUTFBytes(stream.bytesAvailable);
            stream.close();    //关闭FileStream对象
        }
        private function loadTxt():void
        {
            var ldr:URLLoader = new URLLoader();
            ldr.load(new URLRequest("新建文本文档.txt"));
            ldr.addEventListener(Event.COMPLETE, onComplete);
        }
        private function onComplete(e:Event):void
        {
            _t.text = String(e.target.data);
        }
    }
    
}