public static String schedule(String schedulingPattern, Runnable task) {
		return scheduler.schedule(schedulingPattern, task);
	}
public static String schedule ( String schedulingPattern , Runnable task ) { return scheduler . schedule ( schedulingPattern , task ) ; }
加入定时任务

@param schedulingPattern 定时任务执行时间的crontab表达式
@param task 任务
@return 定时任务ID