flex操作本地文件实例

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<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml"
layout="horizontal" fontSize="12"
??? creationComplete="getStudentInfo()">
???
??? <mx:Script>
??? <![CDATA[
??? ???? import mx.controls.Alert;
??? ?? import flash.filesystem.File;
??? ?? import flash.filesystem.FileMode;
??? ?? import flash.filesystem.FileStream;
??? ??
??? ?? private function getStudentInfo():void{
??? ??? /*File.applicationDirectory.nativePath的值是：
??? ??????? C:\Documents and Settings\a\My Documents\Flex Builder 3\readTxtDemo\bin-debug
??? ??? */
??????????????? var file:File = new File("D:\\dataTest\\student.txt");??? //若没有此文件就创建它
??????????????? var stream:FileStream = new FileStream();??? //创建FileStream对象
??????????????? stream.open(file, FileMode.WRITE);??? //使用FileStream对象以只读方式打开File对象
??????????????? stream.writeUTF("helloworld");
??????????????? stream.close();??? //关闭FileStream对象
??????????? }
??? ]]>
??? </mx:Script>
??? <mx:Panel title="从文件中读取数据" verticalAlign="middle" horizontalAlign ="center" width="90%" height="90%">
??????? <mx:TextArea id="txtTextAreaID" width="300" height="200" borderColor="#FF0000" borderThickness="5"/>
??? </mx:Panel>
???
</mx:WindowedApplication>