Arrays 使用urlStream+下载多个文件;文件流
使用Flash Builder 4(使用4.1 flex)并发现/修改了一个脚本,该脚本可以在没有提示的情况下处理单个文件。现在我需要修改它来下载和保存多个文件 代码的发起者说引入了一个数组,但他不知道该怎么做。 理想情况下,按下按钮一次,它将启动函数,然后函数读取数组并使用数组的第一个结果定义的变量运行命令,然后更改为下一个。Arrays 使用urlStream+下载多个文件;文件流,arrays,air,download,flex4,Arrays,Air,Download,Flex4,使用Flash Builder 4(使用4.1 flex)并发现/修改了一个脚本,该脚本可以在没有提示的情况下处理单个文件。现在我需要修改它来下载和保存多个文件 代码的发起者说引入了一个数组,但他不知道该怎么做。 理想情况下,按下按钮一次,它将启动函数,然后函数读取数组并使用数组的第一个结果定义的变量运行命令,然后更改为下一个。 这些值只会在文件名上更改,而不会在本地或远程位置上更改 我知道如何在php中实现这一点,但不知道如何在flex中实现这一点。有人能完成这个吗 <s:Windowe
这些值只会在文件名上更改,而不会在本地或远程位置上更改 我知道如何在php中实现这一点,但不知道如何在flex中实现这一点。有人能完成这个吗
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" width="400" height="200"
title="Updater"
showStatusBar="false">
<fx:Style source="Main.css"/>
<fx:Script>
<![CDATA[
protected function download_clickHandler(event:MouseEvent):void
{
var remoteFile = "http://domain/01.jpg";
var localFile = "C:/01.jpg";
var urlStream = new URLStream();
var request = new URLRequest(remoteFile);
var fileStream = new FileStream();
var file = File.desktopDirectory.resolvePath(localFile);
var writeFile = function()
{
// Write to file
if (urlStream.bytesAvailable > 51200)
{
var dataBuffer = new ByteArray();
urlStream.readBytes(dataBuffer, 0, urlStream.bytesAvailable);
fileStream.writeBytes(dataBuffer, 0, dataBuffer.length);
}
return true;
}
var finishWriteFile = function()
{
if(urlStream.bytesAvailable > 0)
{
var dataBuffer = new ByteArray();
urlStream.readBytes(dataBuffer, 0, urlStream.bytesAvailable);
fileStream.writeBytes(dataBuffer, 0, dataBuffer.length);
}
fileStream.close();
urlStream.close();
return true;
}
fileStream.openAsync(file, FileMode.WRITE);
urlStream.load(request);
urlStream.addEventListener(Event.COMPLETE, finishWriteFile);
urlStream.addEventListener(ProgressEvent.PROGRESS, writeFile);
}
}
]]>
</fx:Script>
<mx:Image x="0" y="0" source="background.jpg"/>
<s:Button x="85" y="85" label="Update" id="download" click="download_clickHandler(event)" color="#FFFFFF" fontSize="30"/></s:WindowedApplication>
51200)
{
var dataBuffer=new ByteArray();
readBytes(dataBuffer,0,urlStream.bytesavable);
fileStream.writeBytes(dataBuffer,0,dataBuffer.length);
}
返回true;
}
var finishWriteFile=函数()
{
如果(urlStream.bytesavable>0)
{
var dataBuffer=new ByteArray();
readBytes(dataBuffer,0,urlStream.bytesavable);
fileStream.writeBytes(dataBuffer,0,dataBuffer.length);
}
fileStream.close();
urlStream.close();
返回true;
}
openAsync(文件,FileMode.WRITE);
加载(请求);
urlStream.addEventListener(Event.COMPLETE,finishWriteFile);
urlStream.addEventListener(ProgressEvent.PROGRESS,writeFile);
}
}
]]>
谢谢你的意见 这就是我现在所拥有的,而且很有效。有人看到怎么做的问题吗
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" width="400" height="200"
title=" Updater"
showStatusBar="false">
<fx:Style source="Main.css"/>
<fx:Script>
<![CDATA[
private function download_clickHandler(event:MouseEvent):void
{
var filearray:Array = new Array();
filearray[0]="pregame.jpg";
filearray[1]="01.jpg";
filearray[2]="02.jpg";
filearray[3]="03.jpg";
filearray[4]="04.jpg";
filearray[5]="05.jpg";
filearray[6]="06.jpg";
filearray[7]="07.jpg";
filearray[8]="08.jpg";
filearray[9]="09.jpg";
filearray[10]="10.jpg";
for (var i:uint; i < filearray.length; i++) {
var remoteURL = "http://www.domain.com/" + filearray[i];
var localURL = "C:/dir/" + filearray[i];
downloadFile(remoteURL, localURL);
}
function downloadFile(url, fileName) {
// Create the stream for the data request
var urlStream = new URLStream();
// Used to initiate request for remote file
var request = new URLRequest(url);
// Create file stream
var fileStream = new FileStream();
// Create a reference to a location on disk
var file = File.desktopDirectory.resolvePath(fileName);
// Called as download progresses
var writeFile = function()
{
// Write to file
if (urlStream.bytesAvailable > 51200)
{
var dataBuffer = new ByteArray();
urlStream.readBytes(dataBuffer, 0, urlStream.bytesAvailable);
fileStream.writeBytes(dataBuffer, 0, dataBuffer.length);
}
return true;
}
// Called when download completes
var finishWriteFile = function()
{
// Write to file
if(urlStream.bytesAvailable > 0)
{
var dataBuffer = new ByteArray();
urlStream.readBytes(dataBuffer, 0, urlStream.bytesAvailable);
fileStream.writeBytes(dataBuffer, 0, dataBuffer.length);
}
// Close streams
fileStream.close();
urlStream.close();
return true;
}
// Initiate download
fileStream.openAsync(file, FileMode.WRITE);
urlStream.load(request);
// Add event listeners
urlStream.addEventListener(Event.COMPLETE, finishWriteFile);
urlStream.addEventListener(ProgressEvent.PROGRESS, writeFile);
}
}
]]>
</fx:Script>
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<mx:Image x="0" y="0" source="background.jpg"/>
<s:Button x="85" y="85" label="Update" id="download" click="download_clickHandler(event)" color="#FFFFFF" fontSize="30"/>
51200)
{
var dataBuffer=new ByteArray();
readBytes(dataBuffer,0,urlStream.bytesavable);
fileStream.writeBytes(dataBuffer,0,dataBuffer.length);
}
返回true;
}
//下载完成时调用
var finishWriteFile=函数()
{
//写入文件
如果(urlStream.bytesavable>0)
{
var dataBuffer=new ByteArray();
readBytes(dataBuffer,0,urlStream.bytesavable);
fileStream.writeBytes(dataBuffer,0,dataBuffer.length);
}
//合流
fileStream.close();
urlStream.close();
返回true;
}
//启动下载
openAsync(文件,FileMode.WRITE);
加载(请求);
//添加事件侦听器
urlStream.addEventListener(Event.COMPLETE,finishWriteFile);
urlStream.addEventListener(ProgressEvent.PROGRESS,writeFile);
}
}
]]>