SessionListener失败，退出

<listener>
<listener-class>cn.edu.hbcf.common.listener.SessionListener</listener-class>
</listener>

package cn.edu.hbcf.common.listener;

import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;

import cn.edu.hbcf.common.constants.WebConstants;
import cn.edu.hbcf.common.springmvc.SpringContextHolder;
import cn.edu.hbcf.privilege.dao.BaseUserLogMapper;
import cn.edu.hbcf.privilege.pojo.BaseUserLog;
import cn.edu.hbcf.privilege.pojo.BaseUsers;

public class SessionListener implements HttpSessionListener {

@Override
public void sessionCreated(HttpSessionEvent arg0) {}
@Override
public void sessionDestroyed(HttpSessionEvent arg0) {
HttpSession session = arg0.getSession();
BaseUsers user = (BaseUsers)session.getAttribute(WebConstants.CURRENT_USER);
String name=user.getAccount();
if(name!=null && name.length()>0){//session失效时候移除记录
if(SessionAttributeListener.sessionMap.containsKey(name)){
BaseUserLogMapper baseUserLogMapper = SpringContextHolder.getBean("baseUserLogMapper");
BaseUserLog log = new BaseUserLog();
log.setLogType(2);
log.setUser(user);
log.setDescription("退出成功");
baseUserLogMapper.insert(log);
SessionAttributeListener.sessionMap.remove(name);
}
}
}

}