Flex 使用 HTTP 服务时出现错误
您好，我正在尝试一个从 yahoo 检索 RSS 提要的简单教程，但不断收到此错误：
RPC 故障错误字符串 =“访问 url 时出现安全错误”faultCode =“Channel.Security.Error”faultDetail =“目标：DefaultHTTP”
我见过有些文章说我需要一个 crossdomain.xml 文件，但我真的不知道如何设置此文件以及如何从 Flex SDK 编译器 (mxmlc) 使用它。
谢谢
Hi I'm trying a simple tutorial of retrieving RSS feeds from yahoo and keep getting this error:
RPC Fault faultString="Security error accessing url" faultCode="Channel.Security.Error" faultDetail="Destination: DefaultHTTP"
I've seen some articles that say I need a crossdomain.xml file, but I don't really know how to set this file up and how to use it from the Flex SDK compiler (mxmlc).
Thanks
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crossdomain.xml 文件需要位于您正在访问的服务器的根目录下。如果他们没有把它放在那里，那么在浏览器中运行时你就不走运了。它是在浏览器沙箱中运行的重要安全方面的一部分（Silverlight 具有相同的限制）。如果您在 Air 中运行（或在浏览器之外的几乎任何内容），则可以放弃此操作。
假设您正在尝试从 http://foo.com/rest/rss/all （或类似的东西）。您可以通过浏览 http://foo.com/ 快速检查它们是否允许跨站点脚本 (XSC) crossdomain.xml。如果它不存在，那么你就无法做到这一点。
尽管如此，您获得的有关更多信息的评论将帮助我们为您提供更好的答案。
The crossdomain.xml file needs to live at the root of the server that you are accessing. If they have not put that there, then you are out of luck when running in the browser. It is part of an important security aspect of running in a browser sandbox (Silverlight has the same restriction). It is waived if you are running in Air (or pretty much anything out of the browser).
Lets say that you are trying to receive data from http://foo.com/rest/rss/all (or something like that). You can chec quickly to see if they allow cross-site scripting (XSC) by browsing to http://foo.com/crossdomain.xml. If it is not there, then you can't do it.
Still, the comments you got about more information would help us give you a better answer.