Flex导出Excel

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Flex前端+Java后台，要将Flex界面中AdvancedDataGrid的数据导出成Excel文件。有2种方法：

1.直接在前台导出。
    使用开源项目as3xls，下载个解决了中文乱码的as3xlsUTF8.swc包，加到Flex工程的引用库中。
    AS代码，点击“导出Excel”按钮后的函数：

var sheet:Sheet = new Sheet();
 private function export2ExcelHandel(e:MouseEvent):void
{
     //在前台生成Excel
     var excelFile:ExcelFile=new ExcelFile();
    var arr:ArrayCollection=myTable.dataProvider as ArrayCollection;
     for(var i:int=0; i
    {
        var obj:Object=arr[i];
         var j:int=0;
         for(var key:String in obj)
        {
             excelFile.sheets.addItem(generateSheet(0,j,key));
            excelFile.sheets.addItem(generateSheet(i,j,obj[key]));
            j++;
        }
    }
    var mbytes:ByteArray=excelFile.saveToByteArray();
     var file:FileReference=new FileReference();
     file.save(mbytes,"测试文件.xls");
}

 function generateSheet(i:int,j:int,o:Object):Sheet{
     if(!sheet){
         sheet = new Sheet();
         sheet.resize(10,10);
    }
    sheet.setCell(i, j, String(o));
     return sheet;
}

var sheet:Sheet = new Sheet();
private function export2ExcelHandel(e:MouseEvent):void
{
    //在前台生成Excel
    var excelFile:ExcelFile=new ExcelFile();
    var arr:ArrayCollection=myTable.dataProvider as ArrayCollection;
    for(var i:int=0; i 
 

FileReference的save方法在Flash10才支持， 
在Flex工程上右键，属性，Flex Conpiler中把Require Flash Player version:填为10.0.0；在Flex Build Path中加入playerglobal.swc 
，路径为…\sdks\3.2.0\frameworks\libs\player\10\playerglobal.swc 

2.通过调JSP或Servlet导出。 
AS代码：
 
 
public static function ToExcel(dg:AdvancedDataGrid,name:String)
{
     //调用JSP
     var url:String="http://localhost:8080/XXX/Export/ExcelExport.jsp";
     var variables:URLVariables = new URLVariables();
    variables.htmltable = convertDGToHTMLTable(dg);
     var u:URLRequest = new URLRequest(url);
    u.data = variables;
    u.method = URLRequestMethod.POST;
     navigateToURL(u,"_self");
}

 private static function convertDGToHTMLTable(dg:AdvancedDataGrid):String {
     //Set default values
     var font:String = dg.getStyle('fontFamily');
     var size:String = dg.getStyle('fontSize');
     var str:String = '';
     var colors:String = '';
     var style:String = 'style="font-family:'+font+';font-size:'+size+'pt;"';
    var hcolor:Array;

     //Retrieve the headercolor
     if(dg.getStyle("headerColor") != undefined) {
         hcolor = [dg.getStyle("headerColor")];
     } else {
         hcolor = dg.getStyle("headerColors");
    }

     str+= '+dg.width+'" border="1">+dg.width+'" style="background-color:#' +Number((hcolor[0])).toString(16)+'">';
     for(var i:int = 0;i
         colors = dg.getStyle("themeColor");
         if(dg.columns[i].headerText != undefined) {
             str+="+style+">"+dg.columns[i].headerText+"";
         } else {
             str+= "+style+">"+dg.columns[i].dataField+"";
        }
    }
     str += "";
     colors = dg.getStyle("alternatingRowColors");
     for(var j:int =0;j
    {
         str+="+Math.ceil(dg.width)+"\">";

         for(var k:int=0; k < dg.columns.length; k++) {
             if(dg.dataProvider.getItemAt(j) != undefined && dg.dataProvider.getItemAt(j) != null) {
                 if(dg.columns[k].labelFunction != undefined) {
                     str += "+Math.ceil(dg.columns[k].width)+"\" "+style+">"+dg.columns[k].labelFunction(dg.dataProvider.getItemAt(j),dg.columns[k].dataField)+"";
                }
                 else {
                     str += "+Math.ceil(dg.columns[k].width)+"\" "+style+">"+dg.dataProvider.getItemAt(j)[dg.columns[k].dataField]+"";
                }
            }
        }
         str += "";
    }
     str+="";
     return str;
}
 
 
public static function ToExcel(dg:AdvancedDataGrid,name:String)
{
    //调用JSP
    var url:String="http://localhost:8080/XXX/Export/ExcelExport.jsp";
    var variables:URLVariables = new URLVariables(); 
    variables.htmltable = convertDGToHTMLTable(dg);
    var u:URLRequest = new URLRequest(url);
    u.data = variables;
    u.method = URLRequestMethod.POST;
    navigateToURL(u,"_self"); 
}

private static function convertDGToHTMLTable(dg:AdvancedDataGrid):String {
    //Set default values
    var font:String = dg.getStyle('fontFamily');
    var size:String = dg.getStyle('fontSize');
    var str:String = '';
    var colors:String = '';
    var style:String = 'style="font-family:'+font+';font-size:'+size+'pt;"';                
    var hcolor:Array;
	   
    //Retrieve the headercolor
    if(dg.getStyle("headerColor") != undefined) {
        hcolor = [dg.getStyle("headerColor")];
    } else {
        hcolor = dg.getStyle("headerColors");
    }                
	   
    str+= '';
    for(var i:int = 0;i"+dg.columns[i].headerText+"";       	         
        } else {
            str+= "";
        }
    }
    str += "";
    colors = dg.getStyle("alternatingRowColors");
    for(var j:int =0;j";
	           
        for(var k:int=0; k < dg.columns.length; k++) {
            if(dg.dataProvider.getItemAt(j) != undefined && dg.dataProvider.getItemAt(j) != null) {              
                if(dg.columns[k].labelFunction != undefined) {
                    str += "";
                } 
                else {
                    str += "";
                }
            }
        }
        str += "";
    }
    str+="
"+dg.columns[i].dataField+"
"+dg.columns[k].labelFunction(dg.dataProvider.getItemAt(j),dg.columns[k].dataField)+"
"+dg.dataProvider.getItemAt(j)[dg.columns[k].dataField]+"
";
    return str;
}
 
 


ExcelExport.jsp放在后台XXX工程的WebRoot下的Export文件夹中。 
ExcelExport.jsp：
 
 
<%@ page language="java"%>
 <%@ page contentType="application/msexcel;charset=UTF-8"
     pageEncoding="UTF-8"%>
<%
 request.setCharacterEncoding("UTF-8");
 //String instr=request.getParameter("filename");
 response.setHeader("Content-disposition","attachment; filename=excel.xls");
 response.setCharacterEncoding("UTF-8");
 String str = request.getParameter("htmltable");
out.print(str);
%>