actionscript-3 - Flash AS3 FileReference-一次选择并上传多个文件

Question

我目前有一个swf，可让您选择和显示文件，然后使用FileReference将其上传到服务器。这很好用，但是我需要能够选择并显示多个（在某些情况下最多25个），然后在最后全部上传。

我知道您可以使用FileReferenceList在对话框弹出窗口中同时选择多个文件，但是我的问题是用户需要一次选择一个文件，对图像进行填充，然后选择另一个，填充等等。 ..然后，当他们按上载时，最后将它们全部上载到服务器。

有可能还是有办法让我可以将每个新选择的文件添加到数组中，然后最后一次上传该数组中的所有文件，或者循环遍历每个文件，直到完成数组中的所有对象？

有人可以帮忙吗？我将在下面发布我的单个工作文件上传的完整代码。

拜托，请帮忙，我的闪光能力有限，只学习了3-4个月，现在已经被困了一个多星期:(

劳伦

as3代码：

import flash.display.Sprite;
import flash.events.MouseEvent;
import flash.net.FileReference;
import flash.net.FileFilter;
import flash.utils.ByteArray;
import flash.events.MouseEvent;
import flash.events.Event;
import flash.events.IOErrorEvent;
import flash.display.MovieClip;
import fl.controls.ProgressBarMode;
import flash.display.Bitmap;
import flash.display.BitmapData;

progressBar.visible=false;
UploadprogressBar.visible=false;

// Create FileReference.
var imageFile:FileReference;

// Create Loader to hold image content
var image_loader:Loader = new Loader();
var image_content:Sprite = new Sprite();

// Get Extension Function.
var imageExtension;

function getExtension($url:String):String {
    var extension:String = $url.substring($url.lastIndexOf(".")+1, $url.length);
    return extension;
}

// Random Number Function to create new filename on server.
function randomNum(low:Number=0, high:Number=1):Number {
return Math.floor(Math.random() * (1+high-low)) + low;
}
var myNumber:Number= randomNum(1000,9999);
var myString:String= String(myNumber);
var RandomNumbers = myString;
var imageFilePath = (RandomNumbers);

// Select Button Function.
select_btn.addEventListener(MouseEvent.CLICK, onselect_btnClicked);

function onselect_btnClicked(event:MouseEvent):void {
imageFile=new FileReference();
imageFile.addEventListener(Event.SELECT, onFileSelected);
var imageTypeFilter:FileFilter = new FileFilter("JPG/PNG Files","*.jpeg; *.jpg;*.gif;*.png");
imageFile.browse([imageTypeFilter]);
}

// File Selected Function.
function onFileSelected(event:Event):void {
imageFile.addEventListener(Event.COMPLETE, onFileLoaded);
imageFile.addEventListener(ProgressEvent.PROGRESS, onProgress);
var imageFileName = imageFile.name;
imageExtension = getExtension(imageFileName);
imageFile.load();

progressBar.visible=true;
progressBar.mode=ProgressBarMode.MANUAL;
progressBar.minimum=0;
progressBar.maximum=100;
UploadprogressBar.mode=ProgressBarMode.MANUAL;
UploadprogressBar.minimum=0;
UploadprogressBar.maximum=100;
}

// File Progress Function.
function onProgress(event:ProgressEvent):void {
var percentLoaded:Number=event.bytesLoaded/event.bytesTotal*100;
progressBar.setProgress(percentLoaded, 100);
}

// File Loaded Function.
function onFileLoaded(event:Event):void {
var fileReference:FileReference=event.target as FileReference;

var data:ByteArray=fileReference["data"];
var movieClipLoader:Loader=new Loader();
movieClipLoader.loadBytes(data);
movieClipLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, onMovieClipLoaderComplete);

imageFile.removeEventListener(Event.COMPLETE, onFileLoaded);
imageFile.removeEventListener(ProgressEvent.PROGRESS, onProgress);
}

// Load Image onto Stage Function.
function onMovieClipLoaderComplete(event:Event):void {
var loadedContent:DisplayObject=event.target.content;
image_loader =event.target.loader as Loader;

var scaleWidth:Number=345/image_loader.width;
image_loader.scaleX=image_loader.scaleY=scaleWidth;
image_loader.height=200;
image_loader.scaleX=image_loader.scaleY;
image_loader.x=10;
image_loader.y=10;

image_content.buttonMode=true;
image_content.addChild(image_loader);
addChild(image_content);
}

// Upload Button Function.
upload_btn.addEventListener(MouseEvent.CLICK, onupload_btnClicked);

function onupload_btnClicked(event:MouseEvent):void {
var filename:String=imageFile.name;
var urlRequest:URLRequest = new URLRequest("http://www.xxxxx.com/xxxxx/file-reference.php");
var variables:URLVariables = new URLVariables();
urlRequest.method = URLRequestMethod.POST;
imageFile.addEventListener(ProgressEvent.PROGRESS, onUploadProgress);
imageFile.addEventListener(DataEvent.UPLOAD_COMPLETE_DATA,onUploadComplete);
variables.ID = (RandomNumbers);
urlRequest.data = variables;
imageFile.upload(urlRequest);
}

// File Upload Progress Function.
function onUploadProgress(event:ProgressEvent):void {
var percentLoaded:Number=event.bytesLoaded/event.bytesTotal*100;
UploadprogressBar.setProgress(percentLoaded, 100);
trace("loaded: "+percentLoaded+"%");
upload_status_txt.text='upload in progress...';
}

// Upload File Completed Function.
function onUploadComplete(event:Event):void {
upload_status_txt.text='upload complete';
imageFile.removeEventListener(ProgressEvent.PROGRESS, onProgress);
imageFile.removeEventListener(DataEvent.UPLOAD_COMPLETE_DATA,onUploadComplete);
UploadprogressBar.visible=false;
}

php服务器代码：

<?php
function getExtension($str) {
$i = strrpos($str,".");
if (!$i) { return ""; }
    $l = strlen($str) - $i;
    $ext = substr($str,$i+1,$l);
    return $ext;
}

$fileID = $_POST['ID'];
$filename = basename( $_FILES['Filedata']['name']);

$extension = getExtension($filename);
$extension = strtolower($extension);
$uploadID = $fileID.'.'.$extension;
if (move_uploaded_file($_FILES['Filedata']['tmp_name'], "images/".$uploadID))
{
     echo "OK";
}
else
{
     echo "ERROR";
}
?>

Answer 1

http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/net/FileReference.html

“当您调用FileReferenceList.browse（）方法时，该方法将创建FileReference对象的数组。”

您需要使用FileReferenceList而不是FileReference。