FileReference and HttpHandler?上传解决思路

FileReference and HttpHandler?上传
我在flex里面结合HttpHandler?实现文件上传，但是不能成功，代码如下，请问哪里有问题，或者谁有例子吗，可以学习下。
.Net HttpHandler? 代码如下：（我要把上传的文件存在目录C:\Documents and Settings\robin_lu\Desktop\Web\UploadFiles下，http://localhost:9191/Web/UpLoadHandler.ashx是部署在IIs上面的）

C# code

<%@ WebHandler Language="C#" Class="UpLoadHandler" %> using System;using System.Web; public class UpLoadHandler : IHttpHandler{    public void ProcessRequest(HttpContext context)    {        context.Response.ContentType = "text/plain";        //string tempFile = this.Page.Request.PhysicalApplicationPath;        string tempFile = @"C:\Documents and Settings\robin_lu\Desktop\Web";         HttpFileCollection files = context.Request.Files;        if (files.Count > 0)        {            //string path = context.Server.MapPath(uploadFolder);            for (int j = 0; j < files.Count; j++)            {                 HttpPostedFile uploadFile = files[j];                 if (uploadFile.ContentLength > 0)                {                    uploadFile.SaveAs(string.Format("{0}{1}{2}", tempFile, "UploadFiles\\", uploadFile.FileName));                }            }        }        else        {            context.Response.Write("parameter error");            context.Response.End();        }           }     public bool IsReusable    {        get        {            return false;        }    }  }

flex代码如下：

Java code

<?xml version="1.0" encoding="utf-8"?>   <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">       <mx:Panel x="49" y="66" width="551" height="164" layout="absolute"            title="使用FileReference上传/下载文件" fontSize="12">           <mx:HDividedBox x="10" y="10" width="511" height="102">               <mx:Canvas  id="left" backgroundColor="#D7F4FF" height="100%" width="209">               <mx:TextInput x="4" y="20" id="txtFile" text="{stateText}" width="135"/>               <mx:Button x="147" y="20" label="选择" fontWeight="normal" click="{file.browse()}"/>               <mx:Button x="31" y="68" label="上传文件" width="111" fontWeight="normal" click="onUpLoad()"/>              </mx:Canvas>              <mx:Canvas id="right" backgroundColor="#D7F4FF" height="100%" width="282">                  <mx:Label x="6" y="9" text="http://localhost:9191/Web/UploadFiles/AS.txt"/>                  <mx:Button x="10" y="37" label="下载文件" fontWeight="normal" click="onDownLoad()"/>                  <mx:Label x="10" y="74" width="272" id="resultLabel"/>                  <mx:TextInput x="122" y="37" id="downState"/>              </mx:Canvas>          </mx:HDividedBox>                </mx:Panel>          <mx:Script>          <![CDATA[                                  [Bindable]              private var stateText:String = "Please select a file";                            private var file:FileReference = new FileReference();              private var fileDown:FileReference = new FileReference();                            /**               * createChildren 比 creationComplete 事件更早发生               * */              protected override function createChildren():void              {                  super.createChildren();                  file.addEventListener(Event.SELECT,onSelected);                  file.addEventListener(Event.COMPLETE,onUploadCompleted);                  file.addEventListener(ProgressEvent.PROGRESS,onUploadProgress);                                    fileDown.addEventListener(Event.COMPLETE,onDownCompleted);                  fileDown.addEventListener(ProgressEvent.PROGRESS,onDownProgress);              }                //            internal function initApp():void  //            {  //                file.addEventListener(Event.SELECT,onSelected);  //                file.addEventListener(Event.COMPLETE,onCompleted);  //                file.addEventListener(ProgressEvent.PROGRESS,onProgress);  //            }                            internal function onSelected(evt:Event):void              {                  stateText = "The selected file:" + file.name;              }                                                                                                 internal function onUploadProgress(evt:ProgressEvent):void              {                  stateText = "have uploaded： " + Math.round(100 * evt.bytesLoaded / evt.bytesTotal) + "%";                                }              internal function onUploadCompleted(evt:Event):void              {                  stateText = "upload complete！";              }                                                        internal function onDownProgress(evt:ProgressEvent):void              {                  downState.text = "have downloaded： " + Math.round(100 * evt.bytesLoaded / evt.bytesTotal) + "%";              }              internal function onDownCompleted(evt:Event):void              {                  var fileRef:FileReference = evt.currentTarget as FileReference;                  resultLabel.text = "file name：" + fileRef.name + " is downloaded completely！";              }                            /**               * 调用FileReference的实例方法upload()实现文件上传               * */              internal function onUpLoad():void              {                  if(file.size > 0)                  {                      stateText = "Uploading file：" + file.name;                  }                  var request:URLRequest = new URLRequest();                                    request.url="http://localhost:9191/Web/UpLoadHandler.ashx";                  file.upload(request);              }                            /**               * 调用FileReference类的实例方法download()实现文件下载               * */              internal function onDownLoad():void              {                  var request:URLRequest = new URLRequest();                  request.url="http://localhost:9191/Web/UploadFiles/flex sourcecode.txt";                  fileDown.download(request);              }         ]]>     </mx:Script> </mx:Application> 
 

[解决办法]
flex代码感觉没什么问题。 .Net不熟悉，就帮不了你了。呵呵。可以dubug断点跟踪一下，是到什么位置出的问题。
[解决办法]
代码的确有点问题。。

上传的时候，你的URLRequest的设置加上如下语句：

Java code

request.method = "POST";request.contentType = "multipart/form-data"; 

 

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