加入Authorization,为何依然有验证对话框

[wl1205626]

下面是代码

			public function HTTPServiceTest():void{
				Security.loadPolicyFile("http://10.100.3.16:8080/manager/crossdomain.xml");
				var service:HTTPService=new HTTPService();
				service.url="http://10.100.3.16:8080/manager/test/tomcat-users.xml";
				service.headers["Authorization"]="Basic " + getEncodedAuthorization();
	                        service.addEventListener("result", handler);
	                        service.addEventListener("fault", handler);
	                        service.send();  
			}
			
			public function getEncodedAuthorization():String{
				var encoder:Base64Encoder=new Base64Encoder();
				encoder.insertNewLines=false;
				encoder.encode("user:pass");
				
				return encoder.toString();
			}

这是crossdomain.xml

<?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="*" to-ports="*"/>
   <allow-http-request-headers-from domain="*" headers="*"/>
</cross-domain-policy> 

用户名，密码什么的，都没问题，按理说应该通过验证啊，但是依然有对话框，怎么回事啊

[wl1205626]

web嵌入方式的，来个人帮解答下啊