ThreadPoolExecutor使用spring bean injection-spring-beans-2.0的Future Task -exception

时间:2013-07-23 11:23:30

标签: java spring threadpoolexecutor futuretask

我正在使用Weblogic 10.3,Spring 2.0,Oracle 11g。当尝试使用'threadpoolexecutor'未来任务(async resp)时,我在等待异步响应时遇到以下异常,其中由线程池执行程序执行的bean是'prototype'

注意:当我使用Spring的ClassPathXmlApplicationContext获取bean时,我没有得到异常,这不是获取bean的首选方法,因为它会再次加载所有bean。

我试过springContextAware,ApplicationObjectSupport;那些也不适合我。

 - Error:

]", which is more than the configured time (StuckThreadMaxTime) of "600" seconds. Stack trace:
        sun.misc.Unsafe.park(Native Method)
        java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
        java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:811)
        java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:969)
        java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1281)
        java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:218)

我的bean定义是

    <bean id="PtTaskExecutor"
            class="java.util.concurrent.ThreadPoolExecutor">
            <constructor-arg index="0" value="1"/>  <!--  corePoolSize -->
            <constructor-arg index="1" value="3"/>  <!--  maximumPoolSize --> 
            <constructor-arg index="2" type="long" value="180"/><!-- 3 minutes -->
<!-- keepAliveTime --> 
            <constructor-arg index="3" type="java.util.concurrent.TimeUnit">    
<!-- the time unit for the keepAliveTime argument -->
            <util:constant static-field="java.util.concurrent.TimeUnit.SECONDS"/>
            </constructor-arg>
            <constructor-arg index="4" type="java.util.concurrent.BlockingQueue"> 
 <!-- the queue for holding tasks before they are executed -->
                <bean name="LinkedBlockingQueue" class="java.util.concurrent.LinkedBlockingQueue">
                    <constructor-arg index="0" type="int" value="3"/> <!-- capacity -->
                </bean>
            </constructor-arg>

            <constructor-arg index="5" type="java.util.concurrent.RejectedExecutionHandler">
 <!--Execute with caller threads if queue is full -->
                    <bean class="java.util.concurrent.ThreadPoolExecutor$CallerRunsPolicy"/>
            </constructor-arg>
            </bean>

    <bean id="xTask" class="***.****.*.*.*.*.XTask" scope="prototype">
            <property name="XDao" ref="XDao" />
            <property name="transactionTemplate" ref="transactionTemplate"/>
        </bean>  




-----The code part 

    Future<YResponseBean[]> responseArr = pTaskExecutor
                        .submit(xTask);

                responseMap.put(i, responseArr);

then the error is from here

    for (Integer i : keySet) {
                    // Waits for the thread response
                    responses[i] = responseMap.get(i).get()[0];
                }

我在lazy-init=true也试过threadpoolexecutor,没有运气。

1 个答案:

答案 0 :(得分:1)

问题不在于来自java.util.concurrent或weblogic的任何内容。 weblogic告诉你的是,其中一个已注册的线程已经等待超过10分钟,get()才能返回。

那为什么不归还?这是因为您提交的Callable尚未返回。您应该检查您提交给执行者的可调用对象,并找出仍然在call()方法中的原因。

例如,如果我写了类似

的内容
Weblogic-Thread-1
Future f= e.submit(new Callable(){
    public Object call(){
        Thread.sleep(700000);
         return null;
    }
});

Weblogic-Thread-2
f.get(); //will sit here and suspend for 700 seconds 

因此,您需要了解您提交的任务尚未完成的原因。