/**
     * 队列状态.
     * 
     * @return
     * @throws SchedulerException
     */
    @RequestMapping(value = "/getPoolStatus", method = RequestMethod.GET, produces = "text/html;charset=UTF-8")
    @ResponseBody
    public String getPoolStatus(HttpServletRequest request) {

        ThreadPoolExecutor jobExecutor = (ThreadPoolExecutor) executor;

        // 线程池状态
        StringBuilder html = new StringBuilder();
        html.append("池最小：").append(jobExecutor.getCorePoolSize()).append("<br>");
        html.append("池最大：").append(jobExecutor.getMaximumPoolSize()).append("<br>");
        html.append("池当前大小：").append(jobExecutor.getPoolSize()).append("<br>");
        html.append("活动线程：").append(jobExecutor.getActiveCount()).append("<br>");
        html.append("历史峰值：").append(jobExecutor.getLargestPoolSize()).append("<br>");
        html.append("执行任务数量：").append(jobExecutor.getTaskCount()).append("<br>");
        html.append("完成任务数量：").append(jobExecutor.getCompletedTaskCount()).append("<br>");
        html.append("队列大小：").append(jobExecutor.getQueue().size()).append("<br>");

        return html.toString();
    }