關於SSH中對於action的監聽問題（關於系統計數）

liweitsky發表於2009-04-27
最近想做一個系統計數功能，網上看了一下資料，用的是session監聽，每當一個session建立或失效，count自動增減1，監聽類如下
public class CounterAction extends DispatchAction implements HttpSessionListener {

private static int activeSessions = 0;
private CounterService counterService;
public CounterService getCounterService()
{
return counterService;
}

public void setCounterService(CounterService counterService)
{
this.counterService = counterService;
}

public ActionForward updatepv(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {

counterService = new CounterServiceImpl();
Integer time = new Integer(Integer.parseInt("20090403"));
Counter counter = this.counterService.findCounterByTime(time);
this.counterService.updateCounterPv(counter, activeSessions);
request.getSession(true).setAttribute("counter", counter);
return null;
}
public ActionForward showpv(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
Integer time = new Integer(20090403);
Counter counter = this.counterService.findCounterByTime(time);
this.counterService.updateCounterPv(counter, activeSessions);
return mapping.findForward("success");
}

public void sessionCreated(HttpSessionEvent se) {

activeSessions++;
Integer time = new Integer(20090403);
String[] locations = {"applicationContext-common.xml","applicationContext-counter.xml"};
ApplicationContext ctx = new ClassPathXmlApplicationContext(locations);
CounterDAO counterdao = (CounterDAOImpl) ctx.getBean("counterDAO");
List list=(List<Counter>) counterdao.findCounterByTime(time);
Counter counter = (Counter) list.get(0);
Iterator counterIterator = list.iterator();
while(counterIterator.hasNext()){
counter = (Counter)counterIterator.next();
}
counter.setPv(activeSessions);
counterdao.updateCounter(counter);
}
public void sessionDestroyed(HttpSessionEvent se) {
if(activeSessions > 0)
activeSessions--;
}
public static int getActiveSessions() {
return activeSessions;
}
}
這個類執行也不報錯，資料庫操作也能透過，問題是似乎資料庫並不commit，我在資料庫中用的是spring getHibernate()的相關方法，我還特意做了一個action，如果人為的去觸發這個action，資料庫一切按照原計劃正常執行（可以更新，查詢），也就是說這個類應該沒錯，可是一旦用了監聽session後，就不更新資料庫，也不報錯，各位大俠幫忙看看

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