spring任务调度问题

[Lcl2326673]

<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">


<!-- 任务调度工厂 -->
<bean id="startQuertz" lazy-init="false" autowire="no" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="triggers">
<list>
<ref local="testTrigger"/>
<!--
<ref bean="roleTaskTrigger"/>
<ref bean="roleTaskUpdateSpTrigger"/>
-->
</list>
</property>
</bean>
<bean id="testBean" class="com.xiao.game.schedule.test"/>
<bean id="testTask" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
<property name="targetObject" ref="testBean" />
<property name="targetMethod" value="test" />
</bean>
<bean id="testTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
<property name="jobDetail" ref="testTask" />
<property name="cronExpression" value="0 * * * * ?" />
</bean>

这是任务调度的文件 我让他每分钟第60秒的时候执行test类里的test方法
本来每次执行时都应该执行1次方法，但是他每次执行时都执行了3次方法。这是为什么呢