flex Base64加解密

来自：http://blog.ityao.com/archives/677



<?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">      
<fx:Script>        
  <![CDATA[            
   import mx.utils.Base64Decoder;            
   import mx.utils.Base64Encoder;            
   protected function btnEncode_clickHandler(event:MouseEvent):void{                
    var $orgin:String = this.textOrigi.text;//获取原始字符串                
    var $base64:Base64Encoder = new Base64Encoder();                
    $base64.insertNewLines = false;//该值等于true时，输出的结果会自动换行，默认为true，               
    $base64.encodeUTFBytes($orgin);//这里注意，如果想加密中文就不要使用$base64.encode();                
    var $result:String = $base64.toString();//输出结果                
    this.textEncodeResult.text = $result            
   }              
   protected function btnDecode_clickHandler(event:MouseEvent):void{                
    var $origi:String = this.textEncodeResult.text;//获取原始字符串                
    var $base64:Base64Decoder = new Base64Decoder();                
    $base64.decode($origi);                
    var $result:String = $base64.toByteArray().toString();//输出结果，decode类只能输出ByteArray类型的数据，因此要转换成string                
    this.textDecodeResult.text = $result            
   }          
  ]]>    
</fx:Script>      
<mx:Form width="100%">        
  <mx:FormItem label="原始字符串：" width="100%">            
   <s:TextArea editable="true" id="textOrigi" width="100%" text="在这里输入原始字符串"/>        
  </mx:FormItem>        
  <mx:FormItem>            
   <s:Button id="btnEncode" label="Encode Base64" enabled="{this.textOrigi.text!=''}" click="btnEncode_clickHandler(event)"/>        
  </mx:FormItem>
<mx:FormItem label="Encode 结果：" width="100%">            
          
<s:TextArea editable="false" id="textEncodeResult" width="100%"/>        
</mx:FormItem>        
  <mx:FormItem>            
   <s:Button id="btnDecode" enabled="{this.textEncodeResult.text!=''}" label="Decode Base64" click="btnDecode_clickHandler(event)"/>        
  </mx:FormItem>        
  <mx:FormItem label="Decode 结果：" width="100%">            
   <s:TextArea editable="false" id="textDecodeResult" width="100%" text="点击Decode Base64按钮后，这里的结果应该和原始字符串相同"/>        
  </mx:FormItem>    
</mx:Form>
</s:Application>

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