How can I use a custom executor for an @Async method?

问题

I am using ThreadPoolExecutor as my custom executor with @ASync annotation.

In google, I have found that the task below needs to be configured in xml but I'm not sure how the myExecutor is mapped to my custom executor.

<task:annotation-driven executor="myExecutor" />

Even found that in bean properties, its path is not given.

How is it called then?

回答1:

Four options:

1. Declare a single bean of type TaskExecutor
2. Declare a single bean with the name AsyncExecutionAspectSupport.DEFAULT_TASK_EXECUTOR_BEAN_NAME ("taskExecutor")
3. Implement AsyncConfigurer#getAsyncExecutor
4. For individual classes/methods, provide a qualifier of an executor bean in the @Async#value.

回答2:

I am not sure I understand your question but your configuration snippet is correct provided that you have defined an Executor bean with myExecutor as id.

The javadoc of @EnableAsync has a good coverage of how this works. For instance, to create a ThreadPoolTaskExecutor with 5 core threads and 10 max threads:

<task:annotation-driven executor="myExecutor"/>
<task:executor id="myExecutor" pool-size="5-10"/>

来源：https://stackoverflow.com/questions/22367531/how-can-i-use-a-custom-executor-for-an-async-method