flex获得session

--------web.xml文件
<listener>
        <listener-class>flex.messaging.HttpFlexSession</listener-class>
    </listener>
--------Java代码
public class GetSeesion {
 /**
  * 设置session
  * */
 public void setSession(String name,String value){
  FlexContext.getFlexSession().setAttribute(name, value);
 }
 //获得session
 public String getSession(String name){
  String userid=(String) FlexContext.getFlexSession().getAttribute(name);
  return userid;
 }
 
}
----------在remoting-config.xml中加入
<!-- 用户信息保存到session中 -->
 <destination id="sessionBiz">
        <properties>
            <source>com.ssfx.util.GetSeesion</source>
            <scope>application</scope>
        </properties>
    </destination>
-------使用session
<mx:RemoteObject id="sBiz" destination="sessionBiz" showBusyCursor="true">
  <mx:method name="setSession"/>
 <mx:method name="getSession" result="sessionHandle(event)"/>
 </mx:RemoteObject>
<script>
 <![CDATA[
  sBiz.setSession("userId",txtUserId.text);
  sBiz.getSession("userId");
  /* 获得后台session处理函数 */ 
   private function sessionHandle(event:ResultEvent):void{
    var userCode=String(event.result);
    this.addPlanMess(userCode);
   }
 ]]>
</script>