apache-flex - 无法从 Flex 应用程序调用外部 servlet

Question

我正在从基于浏览器的 Flex 应用程序中调用 servlet，但出现以下异常：

Error #2044: Unhandled securityError:. text=Error #2170: Security sandbox violation: http://MyURL/web-player/WebPlayer.swf cannot send HTTP headers to http:/MyOtherUrl:1936/ImageUpload.
      at WebPlayer/screenGrab()
      at WebPlayer/__exportImageButton_click()

我有以下 crossdomain.xml 来自

http://MyOtherUrl/ 

和

http://MyOtherUrl:1936/ 

（提供 servlet 的端口）。

<?xml version="1.0"?>
<!DOCTYPE cross-domain-policy SYSTEM "http://www.adobe.com/xml/dtds/cross-domain-policy.dtd">
  <cross-domain-policy>
  <allow-access-from domain="*" />
  <allow-http-request-headers-from domain='*' headers="*" secure="false"/>
  <site-control permitted-cross-domain-policies="all"/>
</cross-domain-policy>

我究竟做错了什么？

---

编辑以包含代码

---

var urlRequest:URLRequest = new URLRequest();
urlRequest.url = "http://MyUrl:1936/ImageUpload";
urlRequest.contentType = 'multipart/form-data; boundary=' + UploadPostHelper.getBoundary();
urlRequest.method = URLRequestMethod.POST;
var params:Object = new Object();
params.userId = userId;
params.videoId = videoId;
urlRequest.data = UploadPostHelper.getPostData("splash.jpg", jpegStream, params);
urlRequest.requestHeaders.push( new URLRequestHeader( 'multipart/form-data', 'image/jpg' ) );

var urlLoader:URLLoader = new URLLoader();
urlLoader.addEventListener(IOErrorEvent.IO_ERROR, onIOError);
urlLoader.dataFormat = URLLoaderDataFormat.BINARY;
urlLoader.load(urlRequest);

Answer 1

尝试检查您的 crossdomain.xml 是否可以从浏览器访问。转到 MyOtherUrl:1936/crossdomain.xml

通过http://www.charlesproxy.com/检查流量 以查看错误。