要求
FLASH文件上传和传统的HTML文件上传，能实现多文件上传、大文件上传，和上传前预览。
当然HTML5也能实现上述功能，这里就不多说了，有时间我在做一个实例和大家分享一下。
下面介绍一下 百度图片 基于FLASH文件上传工具截图:
MultiFile Upload 上传插件介绍:
下面是对MultiFile Upload 插件的UI自定义和代码的翻译:
界面:
自定义UI组件: FlashFileUpload.mxml
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"
backgroundColor="#333333" horizontalCenter="0" verticalCenter="0"
creationComplete="initApp()">
<fx:Declarations> </fx:Declarations>
<fx:Script>
<![CDATA[ import com.newmediateam.fileIO.MultiFileUpload; import flash.media.Sound;
import flash.media.SoundChannel;
import flash.net.FileFilter;
import flash.net.URLVariables; import mx.controls.Alert; import mx.core.SoundAsset; public var multiFileUpload:MultiFileUpload; // 传送完成音乐
[Embed(source="assets/audio/Ding.mp3")]
public var soundClass:Class;
public var snd:SoundAsset = new soundClass() as SoundAsset;
public var sndChannel:SoundChannel; // 设置文件过滤器
public var imageTypes:FileFilter = new FileFilter("Images (*.jpg; *.jpeg; *.gif; *.png)" ,"*.jpg; *.jpeg; *.gif; *.png");
public var videoTypes:FileFilter = new FileFilter("Flash Video Files (*.flv)","*.flv");
public var documentTypes:FileFilter = new FileFilter("Documents (*.pdf), (*.doc), (*.rtf), (*.txt)",("*.pdf; *.doc; *.rtf, *.txt")); // 将文件过滤器装载如数组 递给MultiFileUpload
public var filesToFilter:Array = new Array(imageTypes,videoTypes,documentTypes); public var uploadDestination:String = "http://www.li-cheng.cn"; // 修改服务端上传控制器 public function initApp():void{ var postVariables:URLVariables = new URLVariables;
postVariables.projectID = 55;
postVariables.test ="Hello World"; multiFileUpload = new MultiFileUpload(
filesDG,
browseBTN,
clearButton,
delButton,
upload_btn,
progressbar,
uploadDestination,
postVariables,
11534336,
filesToFilter
); multiFileUpload.addEventListener(Event.COMPLETE,uploadsfinished); //事件有分配 } public function uploadsfinished(event:Event):void{ sndChannel=snd.play(); //播放音频文件 } ]]>
</fx:Script> <s:Group horizontalCenter="0" top="100" width="708" height="408" >
<s:BitmapImage source="@Embed('/assets/images/RasterizedItems.png')" /> <!--背景图片-->
<s:SkinnableContainer horizontalCenter="0" verticalCenter="0" width="638" height="308" skinClass="skins.SkinnableContainer">
<s:layout>
<s:VerticalLayout paddingLeft="15" paddingRight="23" paddingTop="15" paddingBottom="23" />
</s:layout>
<!--数据列表-->
<s:DataGrid id="filesDG" requestedRowCount="4" rowHeight="40" width="100%" height="200" skinClass="skins.DG" >
<!-- <s:columns>
<s:ArrayList>
<s:GridColumn dataField="a" headerText="#" headerRenderer="components.GridHeaderRenderer" itemRenderer="components.GridItemRenderer"></s:GridColumn>
<s:GridColumn dataField="b" headerText="歌曲" headerRenderer="components.GridHeaderRenderer" itemRenderer="components.GridItemRenderer"></s:GridColumn>
</s:ArrayList>
</s:columns>-->
</s:DataGrid>
<s:HGroup width="65%">
<!--进度条-->
<mx:ProgressBar
id="progressbar"
width="100%"
labelPlacement="right"
barSkin="skins.ProgressBar.CustomProgressSkin"
trackSkin="skins.ProgressBar.CustomProgressBarTrackSkin"
color="0xFFFFFF"
minimum="0"
visible="true"
maximum="100"
label="CurrentProgress 0%"
direction="right"
mode="manual"
/>
</s:HGroup>
<!--按钮们-->
<s:HGroup gap="10" paddingTop="10">
<s:Button id="browseBTN" skinClass="skins.buttonSkin4" label="浏览" fontFamily="微软雅黑"/>
<s:Button id="upload_btn" skinClass="skins.buttonSkin5" label="上传" fontFamily="微软雅黑"/>
<s:Button id="delButton" skinClass="skins.buttonSkin6" label="移除" fontFamily="微软雅黑"/>
<s:Button id="clearButton" skinClass="skins.buttonSkin6" label="移除全部" fontFamily="微软雅黑"/>
</s:HGroup>
</s:SkinnableContainer>
</s:Group> </s:Application>
主程序代码: MultiFileUpload.as
// 例子:
// multiFileUpload = new MultiFileUpload(
// filesDG, DataGrid组件
// browseBTN, 浏览按钮
// clearButton, 清楚全部
// delButton, 清楚选中
// upload_btn, 上传按钮
// progressbar, 进度条
// "http://[Your Server Here]/MultiFileUpload/upload.cfm", 上传地址 控制器
// postVariables, 上传参数
// 350000, 最大文件大小 0 （零）值=没有文件限制
// filesToFilter 文件过滤数组
// ); package com.newmediateam.fileIO { //倒入包
import components.GridHeaderRenderer;
import components.GridItemRenderer; import flash.events.*;
import flash.net.FileFilter;
import flash.net.FileReference;
import flash.net.FileReferenceList;
import flash.net.URLRequest;
import flash.net.URLVariables; import mx.collections.ArrayCollection;
import mx.collections.ArrayList;
import mx.controls.Alert;
import mx.controls.ProgressBar;
import mx.controls.ProgressBarMode;
import mx.core.ClassFactory;
import mx.events.CollectionEvent; import spark.components.Button;
import spark.components.DataGrid;
import spark.components.gridClasses.GridColumn; public class MultiFileUpload { //UI 变量
private var _datagrid:DataGrid;
private var _browsebutton:Button;
private var _remselbutton:Button;
private var _remallbutton:Button;
private var _uploadbutton:Button;
private var _progressbar:ProgressBar;
private var _testButton:Button; //DataGrid 列
private var _nameColumn:GridColumn;
private var _typeColumn:GridColumn;
private var _sizeColumn:GridColumn;
private var _creationDate:GridColumn;
private var _modificationDate:GridColumn;
private var _progressColumn:GridColumn;
private var _columns:ArrayList; // 文件参考变量
[Bindable]
private var _files:ArrayCollection;
private var _fileref:FileReferenceList //FileReferenceList 类提供了让用户选择一个或多个要上载的文件的方法。
private var _file:FileReference; //FileReference 类提供了在用户计算机和服务器之间上载和下载文件的方法
private var _uploadURL:URLRequest;
private var _totalbytes:Number; // 文件过滤数组
private var _filefilter:Array; //配置变量
private var _url:String; // 文件上传URL
private var _maxFileSize:Number; //允许上次的最大文件大小 单位字节
private var _variables:URLVariables; // 上传变量 类似 ?a=hello&b=world //构造器
public function MultiFileUpload(
dataGrid:DataGrid,
browseButton:Button,
removeAllButton:Button,
removeSelectedButton:Button,
uploadButton:Button,
progressBar:ProgressBar,
url:String,
variables:URLVariables,
maxFileSize:Number,
filter:Array
){
_datagrid = dataGrid;
_browsebutton = browseButton;
_remallbutton = removeAllButton;
_remselbutton = removeSelectedButton;
_uploadbutton = uploadButton;
_url = url;
_progressbar = progressBar;
_variables = variables;
_maxFileSize = maxFileSize;
_filefilter = filter;
init(); //调用初始化话函数
} //初始化函数
private function init():void{ // 设置文件 ArrayCollection 和 文件处理变量
_files = new ArrayCollection();
_fileref = new FileReferenceList;
_file = new FileReference; // 设置总字节数
_totalbytes = 0; // 给UI组件监听事件
_browsebutton.addEventListener(MouseEvent.CLICK, browseFiles);
_uploadbutton.addEventListener(MouseEvent.CLICK,uploadFiles);
_remallbutton.addEventListener(MouseEvent.CLICK,clearFileCue);
_remselbutton.addEventListener(MouseEvent.CLICK,removeSelectedFileFromCue);
_fileref.addEventListener(Event.SELECT, selectHandler);
_files.addEventListener(CollectionEvent.COLLECTION_CHANGE,popDataGrid); //集合数据变化是监听此函数 // 设置进度条参数
_progressbar.mode = "manual"; // 指定用于更新进度栏的方法。
_progressbar.label = ""; //设置按钮组件
_uploadbutton.enabled = false;
_remselbutton.enabled = false;
_remallbutton.enabled = false; // 设置 DataGrid 控件
_nameColumn = new GridColumn;
_typeColumn = new GridColumn;
_sizeColumn = new GridColumn; _nameColumn.dataField = "name";
_nameColumn.headerText= "文件";
_nameColumn.headerRenderer=new ClassFactory(GridHeaderRenderer); _typeColumn.dataField = "type";
_typeColumn.headerText = "类型";
_typeColumn.width = 80;
_typeColumn.headerRenderer=new ClassFactory(GridHeaderRenderer); _sizeColumn.dataField = "size";
_sizeColumn.headerText = "文件大小";
_sizeColumn.labelFunction = bytesToKilobytes as Function; //Label处理函数
_sizeColumn.width = 150;
_sizeColumn.headerRenderer=new ClassFactory(GridHeaderRenderer); _columns = new ArrayList([_nameColumn,_typeColumn,_sizeColumn]);
_datagrid.columns=_columns; _datagrid.sortableColumns = false; //排序
_datagrid.dataProvider = _files; //数据绑定 // 设置URL请求对象和地址
_uploadURL = new URLRequest;
_uploadURL.url = _url;
_uploadURL.method = "POST"; //设置请求方式 可以为POST和GET .. _uploadURL.data = _variables; //变量
_uploadURL.contentType = "multipart/form-data"; //请求类型声明 如果要上传二进制数据这个必须 } /********************************************************
* 私有方法 *
********************************************************/ // 流量文件 多文件流量
private function browseFiles(event:Event):void{
_fileref.browse(_filefilter);
} // 上传文件
private function uploadFiles(event:Event):void{ if (_files.length > 0){
_file = FileReference(_files.getItemAt(0));
_file.addEventListener(Event.OPEN, openHandler); //前置操作
_file.addEventListener(ProgressEvent.PROGRESS, progressHandler);
_file.addEventListener(Event.COMPLETE, completeHandler);
_file.addEventListener(SecurityErrorEvent.SECURITY_ERROR,securityErrorHandler);//当对 FileReference.upload() 或 FileReference.download() 方法的调用尝试将文件上载到调用方安全沙箱外部的服务器，或是从调用方安全沙箱外部的服务器上下载文件时进行调度。
_file.addEventListener(HTTPStatusEvent.HTTP_STATUS,httpStatusHandler);//当上载失败并且存在可用来描述失败的 HTTP 状态代码时调度。
_file.addEventListener(IOErrorEvent.IO_ERROR,ioErrorHandler);//当上载或下载失败时调度。
_file.upload(_uploadURL);
setupCancelButton(true);
}
} // 删除选定的文件
private function removeSelectedFileFromCue(event:Event):void{ if (_datagrid.selectedIndex >= 0){
_files.removeItemAt( _datagrid.selectedIndex);
}
} // 删除全部文件
private function clearFileCue(event:Event):void{
_nameColumn.itemRenderer=null;
_typeColumn.itemRenderer=null;
_sizeColumn.itemRenderer=null;
_files.removeAll();
} // 取消当前文件上传
private function cancelFileIO(event:Event):void{ _file.cancel();
setupCancelButton(false);
checkCue(); } //文件类型列 label处理函数
private function bytesToKilobytes(data:Object,blank:Object):String {
var kilobytes:String;
kilobytes = String(Math.round(data.size/ 1024)) + ' kb';
return kilobytes
} // 设置进度条Labe值
private function getByteCount():void{
var i:int;
_totalbytes = 0;
for(i=0;i < _files.length;i++){
_totalbytes += _files[i].size;
}
_progressbar.label = "文件: "+ _files.length+ "大小: " + Math.round(_totalbytes/1024) + " kb"
} //检查文件不超过maxFileSize为|如果_maxFileSize == 0没有文件限制设置
private function checkFileSize(filesize:Number):Boolean{ var r:Boolean = false;
//if filesize greater then _maxFileSize
if (filesize > _maxFileSize){
r = false;
trace("false");
}else if (filesize <= _maxFileSize){
r = true;
trace("true");
} if (_maxFileSize == 0){
r = true;
} return r;
} // 重新设置进度条
private function resetProgressBar():void{ _progressbar.label = "";
_progressbar.maximum = 0;
_progressbar.minimum = 0;
} // reset form item elements 重置所有的元素
private function resetForm():void{
_uploadbutton.enabled = false;
_uploadbutton.addEventListener(MouseEvent.CLICK,uploadFiles);
_uploadbutton.label = "上传";
_progressbar.maximum = 0;
_totalbytes = 0;
_progressbar.label = "";
_remselbutton.enabled = false;
_remallbutton.enabled = false;
_browsebutton.enabled = true;
} //每当_FILES的ArrayCollection改变这个函数被调用，以确保数据网格的数据的一致
private function popDataGrid(event:CollectionEvent):void{
getByteCount();
checkCue();
} // enable or disable upload and remove controls based on files in the cue;
//启用上传和清楚按钮
private function checkCue():void{
if (_files.length > 0){
_uploadbutton.enabled = true;
_remselbutton.enabled = true;
_remallbutton.enabled = true;
}else{
resetProgressBar();
_uploadbutton.enabled = false;
}
} // toggle upload button label and function to trigger file uploading or upload cancelling
// 上传按钮和取消按钮的切换 和功能的切换
private function setupCancelButton(x:Boolean):void{
if (x == true){
_uploadbutton.label = "取消";
_browsebutton.enabled = false;
_remselbutton.enabled = false;
_remallbutton.enabled = false;
_uploadbutton.addEventListener(MouseEvent.CLICK,cancelFileIO);
}else if (x == false){
_uploadbutton.removeEventListener(MouseEvent.CLICK,cancelFileIO);
resetForm();
}
} /*********************************************************
* File IO Event Handlers *
*********************************************************/ // called after user selected files form the browse dialouge box.
// 文件被选中后执行的响应函数
private function selectHandler(event:Event):void {
var i:int;
var msg:String ="";
var dl:Array = [];
for (i=0;i < event.currentTarget.fileList.length; i ++){
if (checkFileSize(event.currentTarget.fileList[i].size)){
_files.addItem(event.currentTarget.fileList[i]);
trace("under size " + event.currentTarget.fileList[i].size);
} else {
dl.push(event.currentTarget.fileList[i]);
trace(event.currentTarget.fileList[i].name + " too large");
} _nameColumn.itemRenderer=new ClassFactory(GridItemRenderer);
_typeColumn.itemRenderer=new ClassFactory(GridItemRenderer);
_sizeColumn.itemRenderer=new ClassFactory(GridItemRenderer);
_sizeColumn.labelFunction = bytesToKilobytes as Function; //Label处理函数 }
if (dl.length > 0){
for (i=0;i<dl.length;i++){
msg += String(dl[i].name + " 文件过大. \n");
}
mx.controls.Alert.show(msg + "文件最大为: " + Math.round(_maxFileSize / 1024) + " kb","文件过大",4,null).clipContent;
}
} // 文件被打开 上传之前的响应函数
private function openHandler(event:Event):void{
trace('openHandler triggered');
_files;
} //文件上传被上传的每个文件的过程中调用|我们用这个来养活进度条的数据
private function progressHandler(event:ProgressEvent):void {
_progressbar.setProgress(event.bytesLoaded,event.bytesTotal); //设置进度条的状态
_progressbar.label = "Uploading " + Math.round(event.bytesLoaded / 1024) + " kb of " + Math.round(event.bytesTotal / 1024) + " kb " + (_files.length - 1) + "剩余";
} //所谓的后一个文件已被successully上传|我们利用这一点来检查是否有任何文件留下来上传和如何处理它
//上传完成
private function completeHandler(event:Event):void{ _files.removeItemAt(0); //移除集合中的第0号元素
if (_files.length > 0){
_totalbytes = 0;
uploadFiles(null);
}else{
setupCancelButton(false);
_progressbar.label = "上传完成";
var uploadCompleted:Event = new Event(Event.COMPLETE); //完成时创建一个事件 dispatchEvent(uploadCompleted); //把事件分配出去
}
} private function ioErrorHandler(event:IOErrorEvent):void{
//trace('And IO Error has occured:' + event);
mx.controls.Alert.show(String(event),"ioError",0);
} private function securityErrorHandler(event:SecurityErrorEvent):void{
mx.controls.Alert.show(String(event),"Security Error",0);
} private function cancelHandler(event:Event):void{
trace('cancelled');
} private function httpStatusHandler(event:HTTPStatusEvent):void {
if (event.status != 200){
mx.controls.Alert.show(String(event),"Error",0);
}
} }
}
演示地址： http://www.li-cheng.cn/demo/FlashFileUpload/FlashFileUpload.html
资料下载: http://pan.baidu.com/share/link?shareid=1217875474&uk=1545675865
作者:Li-Cheng
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。