在ThreadPooltasKexecutor和JMS中仅使用一个线程
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26-10-2019 - |
题
我在JBOSS 5.1下有一个JMS消息侦听器,由Spring配置。尽管将螺纹Pooltaskexecutor配置为15的核心池大小,但我发现只有一个线程正在服务请求,而其他线程正在等待。根据 ThreadPoolExecutor API 我需要有一个有限的队列,但是我看不到春天如何让我做到这一点。
这是配置:
<bean id="connectionFactory" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="java:/ConnectionFactory" />
<property name="jndiTemplate" ref="jndiTemplate" />
</bean>
<bean id="destination" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="queue/someQueue" />
<property name="jndiTemplate" ref="jndiTemplate" />
</bean>
<bean id="jmsReceiveDestinationResolver"
class="org.springframework.jms.support.destination.JndiDestinationResolver">
<property name="jndiTemplate" ref="jndiTemplate" />
</bean>
<bean id="someListener" class="com.company.SomeListener">
<property name="..." ref="..." />
</bean>
<jms:listener-container connection-factory="connectionFactory"
destination-type="queue" destination-resolver="jmsReceiveDestinationResolver"
task-executor="jmsTaskExecutor">
<jms:listener destination="queue/someQueue" ref="messageListener" />
</jms:listener-container>
<bean name="jmsTaskExecutor" class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
<property name="corePoolSize" value="15"/>
<property name="maxPoolSize" value="50"/>
<property name="threadNamePrefix" value="some-queue-thread"/>
</bean>
这是14个等待线程的堆栈跟踪:
"some-queue-thread7" prio=10 tid=0x000000004dcfc800 nid=0x1d90 waiting on condition [0x00000000435f7000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x000000070f5abad8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:662)
注意这可能类似于 Spring threadpooltaskexecutor仅运行一个线程, ,但就我而言,核心池大小大于1。
解决方案
春季参考 说您需要用 <jms:listener-container concurrency = "15" ...>
, ,否则是1。
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