Flex上传大文件最佳解决方案是？？？？？

Question

Flex上传大文件最佳解决方案是？？？？？ 500M以上我程序用的是flex +java有 有什么建议的

Answer 1

上传速度怎么样啊 500M一般要多长时间，能说的详细点吗 或者能共享个demo吗

Answer 2

就是通过flex加Struts或者servlet实现的啊
Mp3Load.mxml:<?xml version="1.0" encoding="utf-8"?>
<mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml" fontSize="12" 
borderColor="#000000" headerHeight="25" color="#ffffff" creationComplete="init();"
showCloseButton="true" close="closewindow()" 
title="告警声音文件上传" backgroundAlpha="0.50" backgroundColor="#000000" 
    verticalScrollPolicy="off" horizontalScrollPolicy="off">
<mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml" width="400" height="300">
<mx:Script>
<![CDATA[
import mx.managers.PopUpManager;
import flash.net.FileReference;
import mx.controls.Alert;
import mx.events.CloseEvent;
import flash.events.*;private var file: FileReference;private function init(): void{
Security.allowDomain("*");
file = new FileReference();
file.addEventListener(ProgressEvent.PROGRESS, onProgress);
file.addEventListener(Event.SELECT, onSelect);
file.addEventListener(Event.COMPLETE, completeHandle);
}
private function closewindow():void{
PopUpManager.removePopUp(this);
}
private function completeHandle(event:Event):void{
    Alert.show("上传成功!");
    PopUpManager.removePopUp(this);
}private function upload(): void{
try{
var imageTypes:FileFilter = new FileFilter("Mp3 (*.mp3)", "*.mp3");
var allTypes:Array = new Array(imageTypes);
file.browse(allTypes);
// file.browse();
}catch(error:Error){
Alert.show("一次只能打开一个文件浏览！");
return;
}
}
private function onSelect(e: Event): void{
Alert.show("上传 " + file.name + " (共 "+Math.round(file.size)+" 字节)?",
"确认上传",
Alert.YES|Alert.NO,
null,
proceedWithUpload);
}private function onProgress(e: ProgressEvent): void{
lbProgress.text = " 已上传 " + e.bytesLoaded
+ " 字节，共 " + e.bytesTotal + " 字节";
var proc: uint = e.bytesLoaded / e.bytesTotal * 100;
bar.setProgress(proc, 100);
bar.label= "当前进度: " + " " + proc + "%";
}private function proceedWithUpload(e: CloseEvent): void{
if (e.detail == Alert.YES){
var request: URLRequest = new URLRequest("FileUploadMp3?fileName="+file.name);
try {
file.upload(request);
} catch (error:Error) {
trace("上传失败");
}
}
}
]]>
</mx:Script>
<mx:VBox width="100%" horizontalAlign="center">
<mx:Label id="lbProgress" text="上传"/>
<mx:ProgressBar id="bar" labelPlacement="bottom" themeColor="#F20D7A"
minimum="0" visible="true" maximum="100" label="当前进度: 0%"
direction="right" mode="manual" width="200"/><mx:Button label="上传文件" click="upload();"/>
</mx:VBox></mx:Canvas>
</mx:TitleWindow>

Answer 3

FileUploadMp3是一个servlet 写的有点乱 见笑
package com.zznode.gixpert.groupnorms.action;import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.util.Iterator;
import java.util.List;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;/**
 *
 * @author qixiaoran 转载于网络 http://blog.csdn.net/meteorlWJ/archive/2008/06/01/2450234.aspx
 */
public class FileUploadServlet extends HttpServlet {    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     */
 // 限制文件的上传大小
    private int maxPostSize = 100 * 1024 * 1024;    public FileUploadServlet() {
        super();
    }    public void destroy() {
        super.destroy();
    }    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
       //得到传递过来的文件名
        String filename = charChange(request.getParameter("fileName"));
        String uname =  System.currentTimeMillis()+".mp3"; //取一个随机数作为上传文件的文件名避开中文文件名乱码的可能性
        //得到当前tomcat的路径
        String tomcaturi = request.getSession().getServletContext().getRealPath("");
        // 定义文件的上传路径
        String uploadPath = ""; 
         if(System.getProperty( "os.name").indexOf("Windows") != -1){
         uploadPath = tomcaturi+"\\resources\\mv\\"+uname;
     }else{
     uploadPath = tomcaturi+"/resources/mv/"+uname;
     }
                 //保存文件到服务器中
        DiskFileItemFactory factory = new DiskFileItemFactory();
        factory.setSizeThreshold(4096);
        ServletFileUpload upload = new ServletFileUpload(factory);
        upload.setSizeMax(maxPostSize);
        try {
            List fileItems = upload.parseRequest(request);
            Iterator iter = fileItems.iterator();
            while (iter.hasNext()) {
                FileItem item = (FileItem) iter.next();
                if (!item.isFormField()) {                   
                    try {
                        item.write(new File(uploadPath));
                    //    item.write(new File(tomcaturi+"\\gixpertflex-sx\\resources\\mv\\"+filename));
                       
                        if(System.getProperty( "os.name").indexOf("Windows") != -1){
                         modiXMLFile(tomcaturi+"\\flexconfig\\groupnorms\\playlist.xml", tomcaturi+"\\flexconfig\\groupnorms\\playlist.xml",
                             filename, "resources\\mv\\"+uname);
                 }else{
                 modiXMLFile(tomcaturi+"/flexconfig/groupnorms/playlist.xml", tomcaturi+"/flexconfig/groupnorms/playlist.xml",
                             filename, "resources/mv/"+uname);
                 }
                    
                        
                        
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }
        } catch (FileUploadException e) {
            e.printStackTrace();
                   }
    }    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }    /** 
     * Returns a short description of the servlet.
     */
    public String getServletInfo() {
        return "Short description";
    }
    /**   
 * 字符串内码转换 GB2312 to iso8859-1
 */
public String charChange(String ori) {
if (ori == null || ori.length() == 0) {
return "";
}
String newstr = "";
try {
newstr = new String(ori.getBytes("ISO-8859-1"));
return newstr;
} catch (Exception e) {
e.printStackTrace();
return newstr;
}
}
/** * 修改XML文件中内容,并另存为一个新文件 * @param filename 修改对象文件 * @param newfilename 修改后另存为该文件

* @param title 声音文件描述
  
* @param mp3url 上传的文件存放的地址 * @return 返回操作结果, 0表失败, 1表成功 */
private int modiXMLFile(String filename,String newfilename,String title,String mp3url){ int returnValue = 0; try{ SAXReader saxReader = new SAXReader(); 

FileInputStream in = new FileInputStream(new File(filename)); Document document = saxReader.read(createReader(in,"utf-8")); /** 修改内容之一: 如果sound节点中sound参数的内容为true,则修改成false */ /** 先用xpath查找对象,将以前播放的声音文件标示置为false */

List list = document.selectNodes("/playlist/sound" );  Iterator iter = list.iterator(); while(iter.hasNext()){
Element ftpElement = (Element) iter.next();
if (ftpElement.attribute("isuse").getValue().equals("true")) {
ftpElement.attribute("isuse").setValue("false");
} 
}
/** 将新增的声音文件增加到xml描述文件 **/
list = document.selectNodes("/playlist"); iter = list.iterator(); if(iter.hasNext()){ Element ownerElement = (Element)iter.next(); Element soundElement = ownerElement.addElement("sound"); soundElement.addAttribute("title",title);

mp3url = mp3url.replace("\\", "/");
soundElement.addAttribute("source",mp3url);

soundElement.addAttribute("isuse","true"); }

/** 将document中的内容写入文件中,另存为的文件 */
XMLWriter output = null; /** 格式化输出,类型IE浏览一样 */ OutputFormat format = OutputFormat.createPrettyPrint(); /** 指定XML字符集编码 */ format.setEncoding("utf-8");

output = new XMLWriter(new OutputStreamWriter(new java.io.FileOutputStream(filename),"UTF-8"),format); output.write(document); output.close();    output = new XMLWriter(new OutputStreamWriter(new java.io.FileOutputStream(newfilename),"UTF-8"),format); output.write(document); output.close();  /** 执行成功,需返回1 */ returnValue = 1;

}catch(Exception e){
e.printStackTrace();

}
return returnValue;
}
protected Reader createReader(InputStream inputStream, String encoding) {
try{
return new BufferedReader(
new InputStreamReader(inputStream,encoding)
);
}
catch(Exception uee){
 uee.printStackTrace();
 
}
 
return null;
}
 

}

Answer 4

 上传速度我想应该体现在后台java的处理上，可以再java上着手寻求最佳方案，flex上传就那么两种方式

Answer 5

Error: No class registered for interface 'mx.styles::IStyleManager2'.
at mx.core::Singleton$/getInstance()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\Singleton.as:111]
at mx.styles::StyleManager$/get impl()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\styles\StyleManager.as:78]
at mx.styles::StyleManager$/http://www.adobe.com/2006/flex/mx/internal::initProtoChainRoots()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\styles\StyleManager.as:144]
at Mp3Load/http://www.adobe.com/2006/flex/mx/internal::_Mp3Load_StylesInit()[D:\workspace\flextest\flex_src\Mp3Load.mxml:0]
at Mp3Load()[D:\workspace\flextest\flex_src\Mp3Load.mxml:0]
是不是有什么文件没发给出来啊  打开报错

Answer 6

flex 写的很简单的啊，你直接拷贝过去用的？

Answer 7

可能是sdk版本不一样，把样式什么的都去掉

Answer 8

在Appliction里面<mx:Button click="uplode(event)" />  
 //点击上传
    private function uplode(e:Event):void{
var win:Mp3Upload =Mp3Upload(PopUpManager.createPopUp(this,Mp3Upload,true));
PopUpManager.centerPopUp(win);
}