blazeds flexContext flexSession用法

REMOTEOBJECT:

package com.test;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import flex.messaging.*;
public class GETSESSION {

    public GETSESSION() {
        // TODO Auto-generated constructor stub
    }
     public void setSession(String atr,Object val){
         HttpServletRequest request = FlexContext.getHttpRequest();
           HttpSession session = request.getSession();
           session.setAttribute(atr,val);
     }
     public Object getSession(String atr){
         HttpServletRequest request = FlexContext.getHttpRequest();
         HttpSession session = request.getSession();
         return session.getAttribute(atr);
     }

}

PS1:我的remoting-config.xml:

<destination id="gethttpsession">
    <properties>
    <source>com.test.GETSESSION</source>
    <scope>application</scope>
    </properties>
    </destination>

  PS2:返回的OBJECT如果想要与AS3的OBJECT转化的话这个类要实现序列化(Serializable),还必须有get set方法,maybe flex access to the object with this javacode

mxml:

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
    <mx:RemoteObject id = "ro" destination="gethttpsession"  source="servlet">
               <mx:method name="getSession" result="getresult(event)"/>
        </mx:RemoteObject>
<mx:Script>
                <![CDATA[
                import mx.rpc.events.ResultEvent;
              import mx.controls.Alert;
private function getresult(event:ResultEvent):void{
                    var cid:String = event.result as String;
                   Alert.show(cid);
                            }
                 private function getsession():void{
                    ro.getSession("user");
                    //ro.addEventListener(ResultEvent.RESULT,getcomid);
                            }
                            private function init():void{
                                    ro.setSession("user","http://bjutren.spaces.live.com/");
                            }
        ]]>
        </mx:Script>
<mx:Button x="125" y="89" label="setsession" click="init()"/>
<mx:Button x="125" y="119" label="getsession" click="getsession()"/>

</mx:Application>