Session监听事件的处理

 设置Session监听
 在web.xml文件中：

<listener>
       <listener-class>cjq.login.listener.UpdateLogOutTimerListener</listener-class>
</listener>
    <session-config><!-- session 失效的时间，单位：分钟-->
        <session-timeout>30</session-timeout>
    </session-config>

 

java代码处理如下：

public class UpdateLogOutTimerListener implements HttpSessionListener{

 public void sessionCreated(HttpSessionEvent arg0) {
  // TODO Auto-generated method stub
  //此处为session创建时要做的功能
 }

 public void sessionDestroyed(HttpSessionEvent se) {
  // TODO Auto-generated method stub
  HttpSession session = se.getSession();
  if(session != null){
   SessionBean sb = (SessionBean)session.getAttribute("SessionBean");
   if(sb != null){
    LogUserInfo userInfo = sb.getUserInfo();
    if(userInfo != null){
     String account = userInfo.getAccount();
     IOSysConfigParamUCC paramUCC = new OSysConfigParamUCCImpl();
     paramUCC.updateCurrentNum(0);
    }
   }
  }
 }

}