将Spring任务XML配置转换为代码配置

Question

我正在尝试将使用Spring的任务框架的XML配置转换为纯粹的代码配置.我能够重现这个功能,但每当我关闭Tomcat服务器上的任务调度程序的战争时,它就会挂起(它不会挂起XML配置).我已经调试过来检查调度程序和执行程序的实例,但是我没有看到差异所以我不确定是什么导致它挂起.

以下是适用的XML配置:

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:task="http://www.springframework.org/schema/task"
   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
   http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd">

   <task:executor id="com.work.gwx.pix.executor"
      pool-size="${pix.job.executor.pool.size:1-40}"
      queue-capacity="${pix.job.executor.queue.capacity:0}"
      rejection-policy="CALLER_RUNS"/>

   <task:scheduler id="com.work.gwx.pix.scheduler" pool-size="${pix.job.scheduler.pool.size:4}"  />

    <task:annotation-driven executor="com.work.gwx.pix.executor" scheduler="com.work.gwx.pix.scheduler" />

    <bean id='queueProcessor' class="com.work.gwx.queueing.QueueProcessor" /> 

 </beans>

这是代码配置:

@EnableAsync
@EnableScheduling
@Configuration
public class TaskConfiguration implements AsyncConfigurer, SchedulingConfigurer {

    @Value("${pix.job.executor.max.pool.size:1}")
    private int executorMaxPoolSize;

    @Value("${pix.job.executor.queue.capacity:0}")
    private int executorQueueCapacity;

    @Value("${pix.job.scheduler.pool.size:4}")
    private int schedulerPoolSize;

    @Bean(destroyMethod = "shutdown")
    public Executor pixTaskScheduler() {
        final ScheduledThreadPoolExecutor ex = new ScheduledThreadPoolExecutor(schedulerPoolSize, new ThreadPoolTaskExecutor());
        // ex.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
        return ex;
    }

    @Bean
    public Executor pixExecutor() {
        final ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(executorMaxPoolSize);
        executor.setQueueCapacity(executorQueueCapacity);
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        executor.setThreadFactory(new ThreadPoolTaskExecutor());
        executor.initialize();
        return executor;
    }

    @Override
    public void configureTasks(final ScheduledTaskRegistrar taskRegistrar) {
        taskRegistrar.setScheduler(pixTaskScheduler());

    }

    @Override
    public Executor getAsyncExecutor() {
        return pixExecutor();
    }

    @Override
    public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
        return new SimpleAsyncUncaughtExceptionHandler();
    }
}

当我setExecuteExistingDelayedTasksAfterShutdownPolicy(false)在代码配置中使用它确实关闭但我担心可能会产生不利影响,因为当通过XML配置完成时,它会设置为true.此外,我应该注意,QueueProcessor类正在进行我想要的工作,我不介意延迟执行是否被取消 - 我只是不希望当前正在执行的线程被突然取消.

这是我挂起时收到的消息:

严重:Web应用程序[/ pix-queue-processor]似乎已经启动了一个名为[ThreadPoolTask​​Executor-1]但未能阻止它的线程.这很可能造成内存泄漏.

关于什么可能导致悬挂的任何想法？或者,使用那个注释掉的方法让我做我想做的事情(不会杀死正在运行的任务但会取消延迟的任务)？

Answer 1

基于Java的配置实际上并不代表XML配置.至少有两件事是不同的.

1. 你TaskExecutor有另一个TaskExecutor有线,因为ThreadFactory这不是XML的情况,也是另一个TaskExecutor.
2. 您TaskScheduler使用新的,TaskExecutor而xml配置使用配置的.

让您的任务在关闭时完成,您可以在其waitForTasksToCompleteOnShutdown上设置属性TaskExecutor,true然后任何待处理的任务都将完成,并且不会接受任何新任务.

此外,initialize不应该需要afterPropertiesSet调用,因为Spring将调用该方法initialize.

以下2个bean定义更符合XML配置(现在您只有一个TaskExecutor而不是3个,它将在关闭之前完成任务.

@Bean(destroyMethod = "shutdown")
public Executor pixTaskScheduler() {
    final ScheduledThreadPoolExecutor ex = new ScheduledThreadPoolExecutor(schedulerPoolSize, pixExecutor());
    // ex.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
    return ex;
}

@Bean
public Executor pixExecutor() {
    final ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
    executor.setCorePoolSize(executorMaxPoolSize);
    executor.setQueueCapacity(executorQueueCapacity);
    executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
    executor.setWaitForTasksToCompleteOnShutdown(true);
    return executor;
}