flex 前台导出Excel

/**=========main.mxml=========*/
/* 导出excel */
private function exp():void{
if(dgEnterprise.dataProvider==null){
Alert.show("数据为空，无法导出excel","友情提示");
}else{
ExportExccel.loadDGInExcel(dgEnterprise,"/ssfxSystem/excelexport.jsp?tableName=企业信息");
}
}
/**=========excelexport.jsp=========*/
<%@page import="java.util.Date"%>
<%@page import="java.text.SimpleDateFormat"%><%@ page language="java"%>
<%@ page contentType="application/msexcel;charset=UTF-8"
pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("UTF-8");
String name="";
if (request.getParameter("tableName") != null) {
name = request.getParameter("tableName");
} else {
name = "report";
}
SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd");
Date d1 = new Date();
String date = formatter.format(d1);
response.setHeader("Content-disposition", "attachment; filename="
+" "+name+ "-" + date + ".xls");
String str = request.getParameter("htmltable");
out.print(str);
%>
/**=========ExportExcel.as=========*/
package utils
{
import flash.errors.*;
import flash.events.*;
import flash.external.*;
import flash.net.URLRequest;
import flash.net.URLRequestMethod;
import flash.net.URLVariables;
import flash.net.navigateToURL;

import mx.controls.DataGrid;

public class ExportExccel
{
public function ExportExccel()
{
}
private static function convertDGToHTMLTable(dg:DataGrid):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");
}

//Set the htmlta