下面代碼還是以前上學時候再做一個項目時候寫的代碼，主要是爲了做日誌查詢用，寫了一個監聽器，用來監聽什麼時候ip地址爲什麼的訪問了哪些頁面，以及哪位管理員對網站做了什麼操作等等，代碼很簡單，適合初學者看，代碼內容具體如下，不多解釋，相信都可以看得懂。
public class Listener implements HttpSessionListener,ServletContextListener,
ServletRequestListener {
Log log=LogFactory.getLog(getClass()); //日誌記錄器
//創建sesion的時候被調用
public void sessionCreated(HttpSessionEvent se) {
// TODO Auto-generated method stub
HttpSession session=se.getSession();
log.info("新建的session的ID爲："+session.getId());
}
public void sessionDestroyed(HttpSessionEvent se) {
// TODO Auto-generated method stub
HttpSession session=se.getSession();
log.info("銷燬的session的ID爲："+session.getId());
}
//加載servlet上下文的時候被調用
public void contextDestroyed(ServletContextEvent sce) {
// TODO Auto-generated method stub
ServletContext context=sce.getServletContext();
log.info("即將關閉："+context.getContextPath());
}
public void contextInitialized(ServletContextEvent sce) {
// TODO Auto-generated method stub
ServletContext context=sce.getServletContext();
log.info("即將開啓："+context.getContextPath());
}
//創建request的時候被調用
public void requestInitialized(ServletRequestEvent sre) {
// TODO Auto-generated method stub
HttpServletRequest httpServletRequest=(HttpServletRequest) sre.getServletRequest();
String url=httpServletRequest.getRequestURI();//訪問的路徑
url=httpServletRequest.getQueryString()==null? url:(url+"?"+httpServletRequest.getQueryString());
httpServletRequest.setAttribute("dateCreate", System.currentTimeMillis());
log.info("IP地址爲："+httpServletRequest.getRemoteAddr()+"請求"+url);
}
public void requestDestroyed(ServletRequestEvent sre) {
// TODO Auto-generated method stub
HttpServletRequest httpServletRequest=(HttpServletRequest) sre.getServletRequest();
Long time=System.currentTimeMillis()-(Long)httpServletRequest.getAttribute("dateCreate");
log.info(httpServletRequest.getRemoteAddr()+"請求結束，耗時："+time+"毫秒");
}
}
今天用到了監聽器，翻出了了以上的代碼，貼出來，供自己和大家參考。