xupei1317_java 2009-01-19 12:26
浏览 234
已采纳

监听器的问题HttpSessionListener

如果用遨游浏览器,为什么监听器只能监听第一次登录的用户,只有当第一次登录用户失效后,才能监听第二次的用户?
public class SessionListener implements HttpSessionListener,
HttpSessionAttributeListener {

org.apache.log4j.Logger logger;

public void sessionCreated(HttpSessionEvent arg0) {
        }

public void sessionDestroyed(HttpSessionEvent arg0) {
        }

@SuppressWarnings("unchecked")
public void attributeAdded(HttpSessionBindingEvent arg0) {
    logger = LogInvoker.getSystemLogger(SessionListener.class);
    if (arg0.getName().equals(SessionConstants.ONLINE_STAFF)) {
        Map onlineSession = (Map) arg0.getSession().getServletContext().getAttribute(SessionConstants.ONLINE_SESSION);
        OnLineStaff onlineStaff = (OnLineStaff) arg0.getValue();
        if(onlineStaff!=null){
        onlineSession = new HashMap();
        }
        onlineSession.put(onlineStaff.getBsbUser().getUserId() + "", arg0.getSession());
        arg0.getSession().getServletContext().setAttribute(SessionConstants.ONLINE_SESSION, onlineSession);
        logger.info(onlineStaff.getBsbUser().getUserName() + " logon!");
    }
}

public void attributeRemoved(HttpSessionBindingEvent arg0) {
    logger = LogInvoker.getSystemLogger(SessionListener.class);
    if (arg0.getName().equals(SessionConstants.ONLINE_STAFF)) {
        Map onlineSession = (Map) arg0.getSession().getServletContext()
                .getAttribute(SessionConstants.ONLINE_SESSION);
        OnLineStaff onlineStaff = (OnLineStaff) arg0.getValue();
        if (onlineSession != null) {
            onlineSession.remove(onlineStaff.getBsbUser().getUserId() + "");
        }
        logger.info(onlineStaff.getBsbUser().getUserName() + " logoff!");
    }
}

public void attributeReplaced(HttpSessionBindingEvent arg0) {
}

}

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3条回答 默认 最新

  • Candyut 2009-01-19 14:04
    关注

    用遨游打开的第二个相当于别的浏览器的的文件-》新建窗口
    并未新开启一个和服务器会话,所以。。。

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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