我正在尝试将以下
Spring任务xml配置转换为纯代码/注释版本：
<task:executor id="xyz.executor"
pool-size="${xyz.job.executor.pool.size:1-40}"
queue-capacity="${xyz.job.executor.queue.capacity:0}"
rejection-policy="CALLER_RUNS"/>
<task:scheduler id="xyz.scheduler" pool size="${xyz.job.scheduler.pool.size:4}" />
<task:annotation-driven executor="xyz.executor" scheduler="xyz.scheduler" />
<bean id='xyzProcessor' class="xyz.queueing.QueueProcessor" />
<task:scheduled-tasks scheduler="xyz.scheduler" >
<task:scheduled ref="partitioner" method="createPartitions" cron="${xyz.job.partitioner.interval:0 0 3 * * *}" />
</task:scheduled-tasks>
根据Spring规范,28.4.1(http://docs.spring.io/spring/docs/current/spring-framework-reference/html/scheduling.html),他们说从XML这样去：
<task:annotation-driven executor="myExecutor" scheduler="myScheduler"/> <task:executor id="myExecutor" pool-size="5"/> <task:scheduler id="myScheduler" pool-size="10"/>
代码配置就像启用@EnableScheduling和/或@EnableAsync一样简单.
但是,我没有看到任何可以实际实例化的调度程序. @EnableScheduling(http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/scheduling/annotation/EnableScheduling.html)的javadoc显示了我如何可以插入我自己创建的Executor,尽管我不完全确定它应该是什么类(我仍然希望能够控制池大小,队列容量和拒绝政策).它还显示了如何使用configureTasks覆盖调度我的createPartitions方法.但是,我想要命名我的调度程序(所以我可以识别它的线程)并控制它的池大小.
所以,我想知道这些事情：
1)我可以用什么类来设置XML的执行者字段？
2)有没有办法创建一个可以控制名称和池大小的调度程序实例？
解决方法
查看类型
AsyncConfigurer,AsyncConfigurerSupport和
SchedulingConfigurer.它们是帮助类型,可用于通过异步/调度配置来增强@Configuration类.
在所有这些中,以及@EnabledAsync的javadoc,您都可以找到设置异步/调度@Configuration类所需的所有安装方法.
给出的例子相当
@Configuration
@EnableAsync
public class AppConfig implements AsyncConfigurer {
@Bean
public MyAsyncBean asyncBean() {
return new MyAsyncBean();
}
@Override
public Executor getAsyncExecutor() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(7);
executor.setMaxPoolSize(42);
executor.setQueueCapacity(11);
executor.setThreadNamePrefix("MyExecutor-");
executor.initialize();
return executor;
}
@Override
public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
return new MyAsyncUncaughtExceptionHandler();
}
}
同
<beans>
<task:annotation-driven executor="myExecutor" exception-handler="exceptionHandler"/>
<task:executor id="myExecutor" pool-size="7-42" queue-capacity="11"/>
<bean id="asyncBean" class="com.foo.MyAsyncBean"/>
<bean id="exceptionHandler" class="com.foo.MyAsyncUncaughtExceptionHandler"/>
</beans>
SchedulingConfigurer具有与task：scheduler相似的设置.
