问题
Is there a way to access the response headers from an HTTP result when using Flash/Flex's URLLoader?
Setting the request headers is possible, as is accessing the response code, but getting a hold of the actual response headers seems to be conspicuously lacking...
Specifically, I would like to get a hold of the Last-Modified response header.
回答1:
Oops. Answering my own question here, but AIR introduces the URLLoader.httpResponseStatus event which includes a responseHeaders property (plus a responseURL property for brownie points).
Thankfully my question was for an AIR application, so that solves my problem. It's still a bit shocking that non-AIR flash/flex applications cannot seem to access the response headers.
来源：https://stackoverflow.com/questions/185761/access-http-response-headers-in-for-flash-net-urlloader-object