<?xml version="1.0" encoding="utf-8"?>

 <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"

                xmlns:s="library://ns.adobe.com/flex/spark"

                xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" creationComplete="init()">

     <s:layout>

         <s:VerticalLayout/>

     </s:layout>

     <fx:Declarations>

         <!-- 将非可视元素（例如服务、值对象）放在此处 -->

         <fx:XML id="jsxml" >

             <script>

                 <![CDATA[

                     function clipboardOperator(type,browsername,txt){

                         if(type!="init"){

                             if(type=="copy"){

                                 window.clipboardData.setData("Text", txt);

                                 return;

                             }

                             else if(type=="paste"){

                                 var clipboard=window.clipboardData.getData("Text");

                                 if(clipboard == null){

                                     alert('您的剪切板中没有任何文本内容');

                                     return ;

                                 }

                                 else

                                     return clipboard;

                             }

                         }

                     }

                 ]]>

             </script>

         </fx:XML>

     </fx:Declarations>

     <fx:Script>

         <![CDATA[

             import Class.URLUtil;

             import flash.external.ExternalInterface;

             import flash.desktop.Clipboard;

             import flash.desktop.ClipboardFormats;

             import mx.controls.Alert;

             private var browsername:String=URLUtil.getBrowserName();

             private function init():void{

                 lbpaste.text=ExternalInterface.call(jsxml, "init");

             }

             protected function btncopy_clickHandler(event:MouseEvent):void

             {

                 //内部复制功能

                 Clipboard.generalClipboard.clear();

                 Clipboard.generalClipboard.setData(ClipboardFormats.TEXT_FORMAT,txt.text,false);

                 //调用JS脚本实现复制

 //                ExternalInterface.call("copypasteOperator","copy", txt.text);

             } 

             protected function btnpaste_clickHandler(event:MouseEvent):void

             {

                 lbpaste.text=ExternalInterface.call("clipboardOperator","paste",browsername);

             }

         ]]>

     </fx:Script>

     <s:TextInput id="txt" text="aaa"/>

     <s:Button id="btncopy" label="复制" click="btncopy_clickHandler(event)"/>

     <s:Button id="btnpaste" label="粘贴" click="btnpaste_clickHandler(event)"/>

     <s:Label id="lbpaste"/>

 </s:Application>