FLEX搭配JSP下载文件的例子

FLEX代码：

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
?<mx:Script>
??<![CDATA[
???public static function export():void{

?? System.useCodePage = true;
???var url:String = "http://localhost:8080/flexSpring/exportExcel.jsp";
???var variables:URLVariables = new URLVariables();
???variables.fileType= "swf";
???variables.fileName="aaa"
???variables.filePath="/uploadFile/Dashboard.swf";
???var u:URLRequest = new URLRequest(url);
???u.data = variables;
???u.method = URLRequestMethod.POST;
???navigateToURL(u,"_self");
??}
??]]>
?</mx:Script>
?<mx:Button? label="test" click="export()"/>
</mx:Application>

JSP代码：

<%@ page language="java" import="java.util.*,java.io.*,java.net.URLDecoder" pageEncoding="GBK"%>
<%@page contentType="application/msexcel;charset=GBK"%>
<%
?request.setCharacterEncoding("utf-8");
?InputStream is = request.getInputStream();?
?BufferedReader tBufferedReader = new BufferedReader(new InputStreamReader(is));
?StringBuffer sb = new StringBuffer();
?String temp = new String("");
?while ((temp = tBufferedReader.readLine()) != null){
??sb.append(temp);
?}
?temp = sb.toString();
?String[] params = temp.split("&");
?HashMap<String,Object> paramMap = new HashMap<String,Object>();
?for(int i=0;i<params.length;i++){
??paramMap.put(params[i].split("=")[0],params[i].split("=")[1]);
?}
?String fileType = paramMap.get("fileType").toString();
?response.setHeader("Content-disposition","attachment;filename="+ new String(URLDecoder.decode(paramMap.get("fileName").toString()).getBytes(),"ISO8859_1") + "." + fileType.toLowerCase());
??try
???? {
??RequestDispatcher dispatcher = request.getRequestDispatcher(URLDecoder.decode(paramMap.get("filePath").toString()));
??dispatcher.forward(request,response);
??response.flushBuffer();
??out.clear();
??out = pageContext.pushBody();
???? }
???? catch(Exception e)
???? {
???????? e.printStackTrace();
???? }
%>

这个例子和上个flex例子区别不大，唯一的就是变相的实现了flex下载和打开文件。