flex 把datagrid的内容导出到Excel

SDK要3.4以上的版本：

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
  <mx:Script> 
   <![CDATA[ 
    import mx.controls.dataGridClasses.DataGridColumn; 
       import com.as3xls.xls.Cell; 
       import mx.collections.ArrayCollection; 
       
    import com.as3xls.xls.Sheet; 
       import com.as3xls.xls.ExcelFile; 
        
          private var fileReference:FileReference; 
          private var xls:Class; 
          private var sheet:Sheet; 
          
         [Bindable] 
         private var fields:Array = new Array(); 
           
          [Bindable] 
          private var ItemDGDataProvider:ArrayCollection = new ArrayCollection([ 
              {name:"Item1",value:"21",qty:"3",cost:"12.21", apples: "1"}, 
              {name:"Item2",value:"20",qty:"4",cost:"12.22", apples: "1"}, 
              {name:"Item3",value:"22",qty:"5",cost:"12.23", apples: "1"}, 
              {name:"Item4",value:"23",qty:"2",cost:"12.24", apples: "1"} 
              ]); 
              
    private function fileReference_Cancel(event:Event):void 
          { 
              fileReference = null; 
          } 
         
          private function exportToExcel():void 
          { 
              sheet = new Sheet(); 
              var dataProviderCollection:ArrayCollection = rebateByItemDG.dataProvider as ArrayCollection; 
              var rowCount:int = dataProviderCollection.length; 
              sheet.resize(rowCount + 1,rebateByItemDG.columnCount); 
              var columns:Array = rebateByItemDG.columns; 
              var i:int = 0; 
              for each (var field:DataGridColumn in columns){ 
               fields.push(field.dataField.toString()); 
               sheet.setCell(0,i,field.dataField.toString()); 
               i++; 
              } 
             
              for(var r:int=0; r < rowCount; r++) 
              { 
                     var record:Object = dataProviderCollection.getItemAt(r); 
                     /*insert record starting from row no 2 else 
                     headers will be overwritten*/ 
                     insertRecordInSheet(r+1,sheet,record); 
              } 
              var xls:ExcelFile = new ExcelFile(); 
              xls.sheets.addItem(sheet); 
   
              var bytes: ByteArray = xls.saveToByteArray(); 
              var fr:FileReference = new FileReference(); 
              fr.save(bytes,"SampleExport.xls");  
    } 
    private function insertRecordInSheet(row:int,sheet:Sheet,record:Object):void 
          { 
              var colCount:int = rebateByItemDG.columnCount; 
              for(var c:int; c < colCount; c++) 
              { 
               var i:int = 0; 
               for each(var field:String in fields){ 
                for each (var value:String in record){ 
                 if (record[field].toString() == value) 
                  sheet.setCell(row,i,value); 
                } 
                 i++; 
               } 
     } 
          } 
   ]]> 
  </mx:Script> 
     <mx:VBox width="100%" height="100%"> 
         <mx:Form> 
             <mx:FormItem label="Export Datagrid items to Excel?" fontWeight="bold"> 
                 <mx:Form> 
                     <mx:HBox width="100%" verticalAlign="middle"> 
                         <mx:DataGrid id="rebateByItemDG" includeInLayout="true" visible="true" dataProvider="{ItemDGDataProvider}" width="100%" editable="true"/> 
                         <mx:Button label="Export To Excel" click="exportToExcel();"/> 
                     </mx:HBox> 
                 </mx:Form> 
             </mx:FormItem> 
         </mx:Form> 
     </mx:VBox>
</mx:Application>

压缩包是需要的as3xls包