[Flex] flex+php实现文件的上传

网上找了一个用fileRefrenceList作为文件的选择，貌似用这种方法不能限定上传文件的类型，不过经过测试，确实能运行的。

为方便起见，把它封装成了一个类，并加上了注释，便于大家和自己以后使用。

UploadImage.as:

package exchage
{
 import flash.events.Event;
 import flash.net.FileReference;
 import flash.net.FileReferenceList;
 import flash.net.URLRequest;
 import mx.controls.Alert;
 
 public class UploadImage
 {

      private var urlRequest:URLRequest;
         private var fileReferenceList:FileReferenceList;
         private var serverSideScript:String = http://www.路径/uploadImage.php;  //处理上传的脚本文件路径
         
         [Bindable]
         public var statusText:String;                                                                    //记录上传文件状态
   
            public function init():void
            {
           urlRequest = new URLRequest(serverSideScript);                                      //连接上
             fileReferenceList = new FileReferenceList();
               fileReferenceList.addEventListener(Event.SELECT, fileSelectedHandler);    //设置文件选择监听
            }
    
       public  function uploadFile():void
       {
             init();
             fileReferenceList.browse();                                                                    //打开浏览对话框
       }
    
       private function fileSelectedHandler(event:Event):void                                    //文件选择监听响应函数
       {
        var fileReference:FileReference;
          var fileReferenceList:FileReferenceList = FileReferenceList(event.target);
          var fileList:Array = fileReferenceList.fileList;

          fileReference = FileReference(fileList[0]);
           
          fileReference.addEventListener(Event.COMPLETE, uploadCompleteHandler);  //设置上传过程结束监听
          fileReference.upload(urlRequest);
          
          statusText = "上传中...";

       }
    
       private function uploadCompleteHandler(event:Event):void                               //文件上传完毕监听相应函数
       {
          statusText = "上传成功的文件: " + event.target.name;
       }

 }
}

uploadImage.php

<?php
$uploaddir = 'uploadImages/';
$uploadfile = $uploaddir . basename($_FILES['Filedata']['name']);
$temploadfile = $_FILES['Filedata']['tmp_name'];
move_uploaded_file($temploadfile , $uploadfile);
?>