Flex FileReference 上传或下载文件
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package { import flash.display.Sprite; import flash.events.*; import flash.net.FileReference; import flash.net.URLRequest; import flash.net.FileFilter; public class FileReference_download extends Sprite { private var downloadURL:URLRequest; private var fileName:String = "SomeFile.pdf"; private var file:FileReference; public function FileReference_download() { downloadURL = new URLRequest(); downloadURL.url = "http://www.[yourDomain].com/SomeFile.pdf"; file = new FileReference(); configureListeners(file); file.download(downloadURL, fileName); } private function configureListeners(dispatcher:IEventDispatcher):void { dispatcher.addEventListener(Event.CANCEL, cancelHandler); dispatcher.addEventListener(Event.COMPLETE, completeHandler); dispatcher.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler); dispatcher.addEventListener(Event.OPEN, openHandler); dispatcher.addEventListener(ProgressEvent.PROGRESS, progressHandler); dispatcher.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler); dispatcher.addEventListener(Event.SELECT, selectHandler); } private function cancelHandler(event:Event):void { trace("cancelHandler: " + event); } private function completeHandler(event:Event):void { trace("completeHandler: " + event); } private function ioErrorHandler(event:IOErrorEvent):void { trace("ioErrorHandler: " + event); } private function openHandler(event:Event):void { trace("openHandler: " + event); } private function progressHandler(event:ProgressEvent):void { var file:FileReference = FileReference(event.target); trace("progressHandler name=" + file.name + " bytesLoaded=" + event.bytesLoaded + " bytesTotal=" + event.bytesTotal); } private function securityErrorHandler(event:SecurityErrorEvent):void { trace("securityErrorHandler: " + event); } private function selectHandler(event:Event):void { var file:FileReference = FileReference(event.target); trace("selectHandler: name=" + file.name + " URL=" + downloadURL.url); } }}
package { import flash.display.Sprite; import flash.events.*; import flash.net.FileFilter; import flash.net.FileReference; import flash.net.URLRequest; public class FileReferenceExample extends Sprite { private var uploadURL:URLRequest; private var file:FileReference; public function FileReferenceExample() { uploadURL = new URLRequest(); uploadURL.url = "http://www.[yourDomain].com/yourUploadHandlerScript.cfm"; file = new FileReference(); configureListeners(file); file.browse(getTypes()); } private function configureListeners(dispatcher:IEventDispatcher):void { dispatcher.addEventListener(Event.CANCEL, cancelHandler); dispatcher.addEventListener(Event.COMPLETE, completeHandler); dispatcher.addEventListener(HTTPStatusEvent.HTTP_STATUS, httpStatusHandler); dispatcher.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler); dispatcher.addEventListener(Event.OPEN, openHandler); dispatcher.addEventListener(ProgressEvent.PROGRESS, progressHandler); dispatcher.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler); dispatcher.addEventListener(Event.SELECT, selectHandler); dispatcher.addEventListener(DataEvent.UPLOAD_COMPLETE_DATA,uploadCompleteDataHandler); } private function getTypes():Array { var allTypes:Array = new Array(getImageTypeFilter(), getTextTypeFilter()); return allTypes; } private function getImageTypeFilter():FileFilter { return new FileFilter("Images (*.jpg, *.jpeg, *.gif, *.png)", "*.jpg;*.jpeg;*.gif;*.png"); } private function getTextTypeFilter():FileFilter { return new FileFilter("Text Files (*.txt, *.rtf)", "*.txt;*.rtf"); } private function cancelHandler(event:Event):void { trace("cancelHandler: " + event); } private function completeHandler(event:Event):void { trace("completeHandler: " + event); } private function uploadCompleteDataHandler(event:DataEvent):void { trace("uploadCompleteData: " + event); } private function httpStatusHandler(event:HTTPStatusEvent):void { trace("httpStatusHandler: " + event); } private function ioErrorHandler(event:IOErrorEvent):void { trace("ioErrorHandler: " + event); } private function openHandler(event:Event):void { trace("openHandler: " + event); } private function progressHandler(event:ProgressEvent):void { var file:FileReference = FileReference(event.target); trace("progressHandler name=" + file.name + " bytesLoaded=" + event.bytesLoaded + " bytesTotal=" + event.bytesTotal); } private function securityErrorHandler(event:SecurityErrorEvent):void { trace("securityErrorHandler: " + event); } private function selectHandler(event:Event):void { var file:FileReference = FileReference(event.target); trace("selectHandler: name=" + file.name + " URL=" + uploadURL.url); file.upload(uploadURL); } }}
转载:http://docs.huihoo.com/flex/4/flash/net/FileReference.html#download()
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