Flex异常的处理

今天玩Flex的时候，出现一个异常，上网查了一下，把解决办法贴出来了......
[RPC Fault faultString="Send failed" faultCode="Client.Error.MessageSend" faultDetail="Channel.Connect.Failed error NetConnection.Call.Failed: HTTP: Failed: url: 'http://localhost:8080/***/messagebroker/amf'"]
at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::faultHandler()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\rpc\AbstractInvoker.as:220]
at mx.rpc::Responder/fault()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\rpc\Responder.as:53]
at mx.rpc::AsyncRequest/fault()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\rpc\AsyncRequest.as:103]
at mx.messaging::ChannelSet/faultPendingSends()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\messaging\ChannelSet.as:1482]
at mx.messaging::ChannelSet/channelFaultHandler()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\messaging\ChannelSet.as:975]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.messaging::Channel/connectFailed()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\messaging\Channel.as:997]
at mx.messaging.channels::PollingChannel/connectFailed()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\messaging\channels\PollingChannel.as:354]
at mx.messaging.channels::AMFChannel/statusHandler()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\messaging\channels\AMFChannel.as:390]

Flex Server rootURL与Context root配置出错,正确配置请看图片..

我是把应用部署在 tomcat/webapps/目录下的，root url: http://localhost:8400/appName
Context Root: /appName

也出现的同样的错误，不知道怎么解决？

解决了，是因为我没有添加flex-messaging-remoting.jar

我的：<mx:RemoteObject id="firstRO" destination="FirstJavaClassRemoteObject" fault="faultEvent(event)" endpoint="http://localhost:8080/FlexDemo/messagebroker/amf"/>
其他的都该类就是端口与Context root端口不一样， 也出错吗？

我是eclipse与安装插件与flex结合的，当我新建flex 工程时默认端口是8080但我tomcat端口却是8082.我想给8080的端口该了，但是如果不是8080的端口flex项目就新建不了，望知情者告知，谢谢。