private static long curModifiedTime;
	static {
		try {
			curModifiedTime = new File(filePath).lastModified();
			System.out.println("当前文件改动时间为 " +curModifiedTime);
		} catch (Exception e) {
			e.printStackTrace();
		}
	
	}

public static boolean isModifiedValue()
  {
  	boolean flag = false;
  	long lastModifiedTime = new File(filePath).lastModified();
  	if(lastModifiedTime > curModifiedTime) {
  		curModifiedTime= lastModifiedTime;
  		flag = true;
  	}
  	return flag;
  }

public boolean reSetTaskSchedulerzIntervalTime(){
		boolean flag = false;
		//监听到配置文件改动
		if(PropertiesUtil.isModifiedValue()) {
			long time = 0L;
			try {
				time = Integer.parseInt(PropertiesUtil.readValue(TaskSchedulerzIntervalTime));
				simpleTrigger.setRepeatInterval(time);
				Scheduler scheduler = quartzScheduler.getScheduler();
				String jobName = simpleTrigger.getName();
				String group = simpleTrigger.getGroup();
				try {
					scheduler.pauseJob(jobName, group);
					scheduler.unscheduleJob(jobName,group);
					scheduler.scheduleJob(simpleTrigger);
					scheduler.resumeJob(jobName, group);
					flag = true;
				} catch (SchedulerException e1) {
					e1.printStackTrace();
				}
			} catch (NumberFormatException e) {
				System.out.println("定时任务非数字！
");
				e.printStackTrace();
			}
		}
		return flag;
	}

<bean name="quartzScheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
		<property name="triggers">
			<list>
				<ref bean="simpleTrigger" />
			</list>
		</property>
		<property name="configLocation" value="classpath:quartz.properties" />
	</bean>
	<bean id="simpleTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean">
		<property name="jobDetail">
			<ref bean="jobDetail" />
		</property>
		<property name="startDelay">
			<value>0</value>
		</property>
		<property name="repeatInterval" value="${taskSchedulerzIntervalTime}" />
	</bean>


	<bean id="jobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
		<property name="targetObject" ref="taskScheduler" />
		<property name="targetMethod" value="run" />
	</bean>

<context:property-placeholder location="classpath:config.properties,classpath:jdbc.properties" />