The following example shows how you can use the FileReference class’s
browse()
method to allow users to select and upload a single file to a Web server.
If you want to allow users to upload multiple files at once, you would use the FileReferenceList class instead of FileReference.
<?
xml version="1.0" encoding="utf-8"
?>
<!-- http://blog.flexexamples.com/2007/09/21/uploading-files-in-flex-using-the-filereference-class/ -->
< mx:Application xmlns:mx ="http://www.adobe.com/2006/mxml"
layout ="vertical"
verticalAlign ="middle"
backgroundColor ="white"
creationComplete ="init();" >
< mx:Script >
<![CDATA[
private var fileRef:FileReference;
private const FILE_UPLOAD_URL:String = "http://www.YOUR-WEBSITE-HERE.com/fileref/uploader.cfm";
private function init():void {
fileRef = new FileReference();
fileRef.addEventListener(Event.SELECT, fileRef_select);
fileRef.addEventListener(ProgressEvent.PROGRESS, fileRef_progress);
fileRef.addEventListener(Event.COMPLETE, fileRef_complete);
}
private function browseAndUpload():void {
fileRef.browse();
message.text = "";
}
private function fileRef_select(evt:Event):void {
try {
message.text = "size (bytes): " + numberFormatter.format(fileRef.size);
fileRef.upload(new URLRequest(FILE_UPLOAD_URL));
} catch (err:Error) {
message.text = "ERROR: zero-byte file";
}
}
private function fileRef_progress(evt:ProgressEvent):void {
progressBar.visible = true;
}
private function fileRef_complete(evt:Event):void {
message.text += " (complete)";
progressBar.visible = false;
}
]]>
</ mx:Script >
< mx:NumberFormatter id ="numberFormatter" />
< mx:Button label ="Upload file"
click ="browseAndUpload();" />
< mx:Label id ="message" />
< mx:ProgressBar id ="progressBar"
indeterminate ="true"
visible ="false" />
</ mx:Application >
<!-- http://blog.flexexamples.com/2007/09/21/uploading-files-in-flex-using-the-filereference-class/ -->
< mx:Application xmlns:mx ="http://www.adobe.com/2006/mxml"
layout ="vertical"
verticalAlign ="middle"
backgroundColor ="white"
creationComplete ="init();" >
< mx:Script >
<![CDATA[
private var fileRef:FileReference;
private const FILE_UPLOAD_URL:String = "http://www.YOUR-WEBSITE-HERE.com/fileref/uploader.cfm";
private function init():void {
fileRef = new FileReference();
fileRef.addEventListener(Event.SELECT, fileRef_select);
fileRef.addEventListener(ProgressEvent.PROGRESS, fileRef_progress);
fileRef.addEventListener(Event.COMPLETE, fileRef_complete);
}
private function browseAndUpload():void {
fileRef.browse();
message.text = "";
}
private function fileRef_select(evt:Event):void {
try {
message.text = "size (bytes): " + numberFormatter.format(fileRef.size);
fileRef.upload(new URLRequest(FILE_UPLOAD_URL));
} catch (err:Error) {
message.text = "ERROR: zero-byte file";
}
}
private function fileRef_progress(evt:ProgressEvent):void {
progressBar.visible = true;
}
private function fileRef_complete(evt:Event):void {
message.text += " (complete)";
progressBar.visible = false;
}
]]>
</ mx:Script >
< mx:NumberFormatter id ="numberFormatter" />
< mx:Button label ="Upload file"
click ="browseAndUpload();" />
< mx:Label id ="message" />
< mx:ProgressBar id ="progressBar"
indeterminate ="true"
visible ="false" />
</ mx:Application >
本文转自 OldHawk 博客园博客，原文链接：http://www.cnblogs.com/taobataoma/archive/2008/01/13/1037007.html
，如需转载请自行联系原作者
