如何解决Flash错误2176 [英] How to get around Flash error 2176

问题描述

在我的Flex应用程序中，用户需要能够上传和下载内容。但是，这个内容是访问受限的，我需要做一个权限检查，然后才允许上传/下载。用户单击一个链接，然后使用FileReference类选择一个文件。 FileReference类不附加cookie信息，所以我不能使用会话。

我想实现一个2步的过程，客户端首先ping服务器获取一次性使用令牌，然后以一次性使用令牌作为参数进行上传或下载。然而，这个计划正在被错误＃2176挫败，这显然是FP10的安全修复，只允许在MouseEvent传播期间触发上传/下载。反正这个呢？

解决方案

我得到了这个 。 c $ c><？xml version =1.0encoding =utf-8？>
layout =absolute
minWidth =955minHeight =600
creationComplete =creationCompleteHandler（event）>
< mx：Script>
<！[CDATA [
import mx.controls.Alert;
导入mx.events.CloseEvent;
导入mx.events.FlexEvent;

protected function creationCompleteHandler（event：FlexEvent）：void
{
Alert.show（现在您可以保存文件！，Test，Alert.OK | Alert .CANCEL，null，closeHandler）;


保护函数closeHandler（event：CloseEvent）：void
{
var fileReference：FileReference;

if（event.detail == Alert.OK）
{
fileReference = new FileReference（）;
fileReference.save（http://www.bogdanmanate.com，test.txt）;
}
}
]]>
< / mx：Script>

< / mx：应用程序>

In my Flex application, users need to be able to upload and download content. However, this content is access restricted, and I need to do a permissions check before allowing the upload/download. The user clicks a link, and then selects a file using the FileReference class. The FileReference class doesn't attach cookie information, so I can't use a session.

I want to implement a 2 step process where the client first pings the server to get a one-time-use token, and then does the upload or download with the one-time-use token as a parameter. However, this plan is being foiled by error #2176, which is apparently a security fix to FP10, that only allows uploads/download to be triggered during a MouseEvent propogation. Anyways around this?

解决方案

I got workarround for this here.

 <?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" 
                layout="absolute" 
                minWidth="955" minHeight="600"
                creationComplete="creationCompleteHandler(event)">
    <mx:Script>
        <![CDATA[
            import mx.controls.Alert;
            import mx.events.CloseEvent;
            import mx.events.FlexEvent;

            protected function creationCompleteHandler(event:FlexEvent):void
            {
                Alert.show("Now you can save the file!", "Test", Alert.OK|Alert.CANCEL, null, closeHandler);
            }

            protected function closeHandler( event:CloseEvent ):void
            {
                var fileReference :FileReference;

                if ( event.detail == Alert.OK )
                {
                    fileReference = new FileReference();
                    fileReference.save("http://www.bogdanmanate.com", "test.txt");
                }
            }
        ]]>
    </mx:Script>

</mx:Application>

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