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。我能够重现这些功能,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="${pix.job.scheduler.pool.size:4}" />
<task:annotation-driven executor="com.work.gwx.pix.executor" scheduler="com.work.gwx.pix.scheduler" />
<bean id='queueProcessor' class="com.work.gwx.queueing.QueueProcessor" />
</beans>
以下是代码配置:
@EnableAsync
@EnableScheduling
@Configuration
public class TaskConfiguration implements AsyncConfigurer, SchedulingConfigurer {
@Value("${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();
}
}
当我在代码配置中使用setExecuteExistingDelayedTasksAfterShutdownPolicy(false)
时,它会关闭,但我担心可能会产生不利影响,因为在通过XML配置完成时会设置为true。另外,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]似乎有 启动了一个名为[ThreadPoolTaskExecutor-1]的线程,但未能成功 停下来。这很可能会造成内存泄漏。
关于可能导致悬挂的任何想法?或者,使用这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)?
答案 0 :(得分:5)
您的基于Java的配置实际上并不代表XML配置。至少有两件事是不同的。
TaskExecutor
还有另一个TaskExecutor
有线ThreadFactory
,这不是XML中的情况,也是另一个TaskExecutor
。TaskScheduler
使用新的TaskExecutor
,而xml配置使用已配置的。{/ li>
醇>
让您的任务在关闭时完成,您可以将waitForTasksToCompleteOnShutdown
上的TaskExecutor
属性设置为true
,然后任何待处理任务都将完成,并且不会接受任何新任务。
此外,不应调用initialize
,因为afterPropertiesSet
方法将由Spring调用,而initialize
方法将调用TaskExecutor
。
以下2个bean定义更符合XML配置(现在您只有一个@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;
}
而不是3,它将在关闭之前完成任务。
String line = scanner.nextLine();
String outputLine = line.replace('?', '-');
outputLine = outputLine.replace('.', ' ');
writer.println(outputLine);