如何从 XML Spring 调度配置转到 annotation/code 配置?
How to go from XML Spring scheduling configuration to annotation/code configuration?
我正在尝试将以下 Spring 任务 xml 配置转换为纯粹基于 code/annotation 的版本:
<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 开始是这样的:
<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 and/or @EnableAsync.
一样简单
但是,我没有看到任何可以实际实例化调度程序的地方。 @EnableScheduling (http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/scheduling/annotation/EnableScheduling.html) 的 javadoc 展示了我如何插入我自己创建的执行器,尽管我不确定它应该是什么 class(我仍然希望能够控制池大小、队列容量和拒绝策略)。它还展示了我如何使用 configureTasks 覆盖来安排我的 createPartitions 方法。但是,我希望能够命名我的调度程序(以便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:
1) 我可以使用什么 class 来设置 XML 具有的执行程序字段?
2) 有没有办法创建一个我可以控制其名称和池大小的调度程序实例?
检查类型 AsyncConfigurer
, AsyncConfigurerSupport
, and SchedulingConfigurer
。它们是辅助类型,您可以使用它们来增强 @Configuration
class 和 async/scheduling 配置。
在所有这些以及 @EnabledAsync
的 javadoc 中,您将找到设置 async/scheduling @Configuration
class 所需的所有设置方法。 =22=]
给出的示例等同于
@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();
}
}
和
<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
与 task:scheduler
的设置类似。
如果你想要更细粒度的控制,你可以另外实现 SchedulingConfigurer
and/or AsyncConfigurer
接口。
如下,
请注意泳池,
@Configuration
@EnableScheduling
public class CronConfig implements SchedulingConfigurer{
@Override
public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
taskRegistrar.setScheduler(taskExecutor());
}
@Bean(destroyMethod="shutdown")
public Executor taskExecutor() {
return Executors.newScheduledThreadPool(10);
}
}
对于异步,
@Configuration
@EnableAsync
public class AsyncConfig implements AsyncConfigurer {
@Override
public Executor getAsyncExecutor() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(5);
executor.setMaxPoolSize(10);
executor.setQueueCapacity(100);
executor.initialize();
return executor;
}
@Override
public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
return new SimpleAsyncUncaughtExceptionHandler();
}
}
请注意,@EnableAsync
和 @EnableScheduling
必须存在才能正常工作。
我正在尝试将以下 Spring 任务 xml 配置转换为纯粹基于 code/annotation 的版本:
<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 开始是这样的:
<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 and/or @EnableAsync.
一样简单但是,我没有看到任何可以实际实例化调度程序的地方。 @EnableScheduling (http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/scheduling/annotation/EnableScheduling.html) 的 javadoc 展示了我如何插入我自己创建的执行器,尽管我不确定它应该是什么 class(我仍然希望能够控制池大小、队列容量和拒绝策略)。它还展示了我如何使用 configureTasks 覆盖来安排我的 createPartitions 方法。但是,我希望能够命名我的调度程序(以便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:
1) 我可以使用什么 class 来设置 XML 具有的执行程序字段?
2) 有没有办法创建一个我可以控制其名称和池大小的调度程序实例?
检查类型 AsyncConfigurer
, AsyncConfigurerSupport
, and SchedulingConfigurer
。它们是辅助类型,您可以使用它们来增强 @Configuration
class 和 async/scheduling 配置。
在所有这些以及 @EnabledAsync
的 javadoc 中,您将找到设置 async/scheduling @Configuration
class 所需的所有设置方法。 =22=]
给出的示例等同于
@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();
}
}
和
<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
与 task:scheduler
的设置类似。
如果你想要更细粒度的控制,你可以另外实现 SchedulingConfigurer
and/or AsyncConfigurer
接口。
如下,
请注意泳池,
@Configuration
@EnableScheduling
public class CronConfig implements SchedulingConfigurer{
@Override
public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
taskRegistrar.setScheduler(taskExecutor());
}
@Bean(destroyMethod="shutdown")
public Executor taskExecutor() {
return Executors.newScheduledThreadPool(10);
}
}
对于异步,
@Configuration
@EnableAsync
public class AsyncConfig implements AsyncConfigurer {
@Override
public Executor getAsyncExecutor() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(5);
executor.setMaxPoolSize(10);
executor.setQueueCapacity(100);
executor.initialize();
return executor;
}
@Override
public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
return new SimpleAsyncUncaughtExceptionHandler();
}
}
请注意,@EnableAsync
和 @EnableScheduling
必须存在才能正常工作。