spring + quartz定时任务，以及修改定时任务

<dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz</artifactId>
            <version>1.8.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>3.2.17.RELEASE</version>
        </dependency>

<bean id="scheduleInfoAction" class="com.aaa.controller.AutoTaskController">
        <property name="scheduler" ref="schedulerFactory"/>
    </bean>

    <bean id="schedulerJobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
        <property name="targetObject" ref="scheduleInfoAction"/>
        <property name="targetMethod" value="execute"/>
        <property name="concurrent" value="false"/>
    </bean>

    <bean id="packetResolveTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean" >
        <property name="jobDetail" ref="schedulerJobDetail"/>
        <property name="cronExpression">
            <value>0/5 * * * * ?</value>
        </property>
    </bean>
    <bean id="schedulerFactory" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        <property name="triggers">
            <list>
                <ref local="packetResolveTrigger"/>
            </list>
        </property>
    </bean>

package com.aaa.controller;

@Api("定时任务接口")
@Controller
@RequestMapping("/task")
public class AutoTaskController {

　　private Scheduler scheduler;
　　public void setScheduler(Scheduler scheduler) {
   　　 this.scheduler = scheduler;
　　}

 　　//定时任务执行 
　　protected void execute() throws Exception { System.out.println("定时任务执行，解析："+new Date());  }
　　//修改
    public void changeCronTime(String ex) throws Exception{
        //获取定时器
        try {
            CronTriggerBean trigger = (CronTriggerBean) scheduler.getTrigger("packetResolveTrigger", Scheduler.DEFAULT_GROUP);
            System.out.println(trigger.getCronExpression());
            trigger.setCronExpression("0/1 * * * * ?");
            scheduler.rescheduleJob("packetResolveTrigger", Scheduler.DEFAULT_GROUP, trigger);
        } catch (SchedulerException e1) {
            e1.printStackTrace();
        } catch (ParseException e1) {
            e1.printStackTrace();
        }
    }
}