Spirng 线程池的使用

<bean id="taskExecutor"   
        class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">  
                <property name="corePoolSize" value="5" />  
                <property name="maxPoolSize" value="10" />  
                <!-- 缓存队列 -->
                <property name="queueCapacity" value="20" />
                <!-- 线程池维护线程所容许的空闲时间 -->
        		<property name="keepAliveSeconds" value="300" />
                <!-- 对拒绝task的处理策略 -->
                <property name="rejectedExecutionHandler">
             		<bean class="java.util.concurrent.ThreadPoolExecutor$CallerRunsPolicy" />         
             	</property>
                <property name="WaitForTasksToCompleteOnShutdown" value="true" />  
    </bean>

@Autowired
private ThreadPoolTaskExecutor taskExecutor;