flex 上传
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"? width="120" height="20" initialize="init()">
??? <mx:Button x="0" y="0" width="120" height="20" id="_but" click="show()" />
??? <mx:Script>
??? ??? <![CDATA[
??? ??? ??? import flash.net.*;
??? ??? ??? import flash.external.ExternalInterface;
??? ??? ??? //定义http请求对象
??? ??? ??? private var _https:URLRequest;
??? ??? ??? //定义上传的文件对象
??? ??? ??? private var _file:Object;
??? ??? ??? //保存传入的配置
??? ??? ??? private var _params:Object;
??? ??? ??? //过滤后缀
??? ??? ??? private var _types:Array;
??? ??? ??? //上传加载方法
??? ??? ??? public function init():void{
??? ??? ??? ??? //获取传入的参数
??? ??? ??? ??? _params = this.parameters;
??? ??? ??? ??? //加载容器宽度
??? ??? ??? ??? if(_params.width){
??? ??? ??? ??? ??? _but.width = _params.width;
??? ??? ??? ??? }
??? ??? ??? ??? if(_params.text){
??? ??? ??? ??? ??? _but.label = _params.text
??? ??? ??? ??? }
??? ??? ??? ??? //加载容器高度
??? ??? ??? ??? if(_params.height){
??? ??? ??? ??? ??? _but.height = _params.height;
??? ??? ??? ??? }
??? ??? ??? ??? if(_params.selectFlag){
??? ??? ??? ??? ??? //创建上传文件对象
??? ??? ??? ??? ??? _file = new FileReferenceList();
??? ??? ??? ??? }else{
??? ??? ??? ??? ??? //创建上传文件对象
??? ??? ??? ??? ??? _file = new FileReference();
??? ??? ??? ??? }
??? ??? ??? ??? //监听文件选择事件
??? ??? ??? ??? _file.addEventListener(Event.SELECT,_selectHeader);
??? ??? ??? ??? //如果外部处理方法有定义，则监听
??? ??? ??? ??? if(_params.complete){
??? ??? ??? ??? ??? //监听上传完成事件
??? ??? ??? ??? ??? _file.addEventListener(Event.COMPLETE,_completeHeader);
??? ??? ??? ??? }
??? ??? ??? ??? //如果外部处理异常方法有定义，则监听
??? ??? ??? ??? if(_params.error){
??? ??? ??? ??? ??? //监听http状态
??? ??? ??? ??? ??? _file.addEventListener(HTTPStatusEvent.HTTP_STATUS,_httpStatusHeader);
??? ??? ??? ??? ??? //监听io流状态
??? ??? ??? ??? ??? _file.addEventListener(IOErrorEvent.IO_ERROR,_ioErrorHeader);
??? ??? ??? ??? }
??? ??? ??? ??? //滚动条监听
??? ??? ??? ??? if(_params.progress){
??? ??? ??? ??? ??? _file.addEventListener(ProgressEvent.PROGRESS,_progressHeader);
??? ??? ??? ??? }
??? ??? ??? ??? _types = new Array();
??? ??? ??? ??? ??? //文件类型
??? ??? ??? ??? if(_params.filterMsg && _params.filter){
??? ??? ??? ??? ??? _types.push(new FileFilter(_params.filterMsg,_params.filter));
??? ??? ??? ??? }else{
??? ??? ??? ??? ??? //默认限制上传类型
??? ??? ??? ??? ??? _types.push(new FileFilter("All Files(*.*)","*.*"));
??? ??? ??? ??? ??? _types.push(new FileFilter("Images (*.jpg,*.png,*.jpeg,*.gif)","*.jpg;*.png;*.jpeg;*.gif"));
??? ??? ??? ??? ??? _types.push(new FileFilter("Text Files (*.txt, *.rtf)","*.txt;*.rtf"));
??? ??? ??? ??? }
??? ??? ??? ??? //创建请求对象
??? ??? ??? ??? _https= new URLRequest();
??? ??? ??? ??? //加载请求地址
??? ??? ??? ??? if(_params.url){
??? ??? ??? ??? ??? _https.url = _params.url;
??? ??? ??? ??? }else if(_params.error){
??? ??? ??? ??? ??? //如果没有传入必传配置：url请求地址,则回调错误
??? ??? ??? ??? ??? ExternalInterface.call(_params.error,{
??? ??? ??? ??? ??? ??? msg:"Param Error:url is null!"
??? ??? ??? ??? ??? });
??? ??? ??? ??? ??? return;
??? ??? ??? ??? }
??? ??? ??? ??? _https.contentType = "multipart/form-data";
??? ??? ??? ??? _https.method = "POST";
??? ??? ??? ??? var urldata:URLVariables = new URLVariables();
??? ??? ??? ??? if(_params.uid){
??? ??? ??? ??? ??? urldata.userid=_params.uid;
??? ??? ??? ??? }
??? ??? ??? ??? _https.data=urldata;
??? ??? ??? }
??? ??? ??? //加载上传选择窗口
??? ??? ??? public function show():void{
??? ??? ??? ??? _file.browse(_types);
??? ??? ??? }
??? ??? ??? //处理监听文件选择的方法
??? ??? ??? private function _selectHeader(e:Event):void{
??? ??? ??? ??? if(_params.selectFlag){
??? ??? ??? ??? ???
??? ??? ??? ??? }
??? ??? ??? ??? _file.upload(_https,"file");
??? ??? ??? }
??? ??? ??? //处理文件上传完成方法
??? ??? ??? private function _completeHeader(e:Event):void{
??? ??? ??? ??? ExternalInterface.call(_params.complete,{
??? ??? ??? ??? ??? filename:_file.name,
??? ??? ??? ??? ??? filesize:_file.size
??? ??? ??? ??? });
??? ??? ??? }
??? ??? ??? //处理http请求状态方法
??? ??? ??? private function _httpStatusHeader(e:HTTPStatusEvent):void{
??? ??? ??? ??? ExternalInterface.call(_params.error,{
??? ??? ??? ??? ??? msg:"Net error:"+e.status
??? ??? ??? ??? });
??? ??? ??? }
??? ??? ??? //处理io流异常方法
??? ??? ??? private function _ioErrorHeader(e:IOErrorEvent):void{
??? ??? ??? ??? ExternalInterface.call(_params.error,{
??? ??? ??? ??? ??? msg:"IO error:"+e.text
??? ??? ??? ??? });
??? ??? ??? }
??? ??? ??? //滚动条回调
??? ??? ??? private function _progressHeader(e:ProgressEvent):void{
??? ??? ??? ??? ExternalInterface.call(_params.progress,{
??? ??? ??? ??? ??? "totalsize":e.bytesTotal,
??? ??? ??? ??? ??? "currsize":e.bytesLoaded
??? ??? ??? ??? });
??? ??? ??? }
??? ??? ]]>
??? </mx:Script>
</mx:Application>
