code: public String loginCountStat() {
      OqlBuilder<SessioninfoLogBean> query = OqlBuilder.from(SessioninfoLogBean.class, "sessioninfoLog");
      addConditions(query);
      query.select("sessioninfoLog.username,sessioninfoLog.fullname,count(*)")
          .groupBy("sessioninfoLog.username,sessioninfoLog.fullname").orderBy(get("orderBy"))
          .limit(getPageLimit());
      put("loginCountStats", entityDao.search(query));
      return forward();
    }
docs: 显示登陆次数