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java - QueueMessageHandler 的用途是什么

转载 作者:行者123 更新时间:2023-12-02 11:18:23 26 4
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下面粘贴的代码中的 QueueMessageHandler 的用途是什么?在下面的示例中,queueMessageHandler 似乎没有执行太多操作。

@Bean
public SimpleMessageListenerContainer simpleMessageListenerContainer(AmazonSQSAsync amazonSQSAsync) {
SimpleMessageListenerContainer simpleMessageListenerContainer = new SimpleMessageListenerContainer();
simpleMessageListenerContainer.setAmazonSqs(amazonSQSAsync);
simpleMessageListenerContainer.setMessageHandler(queueMessageHandler());
simpleMessageListenerContainer.setMaxNumberOfMessages(10);
simpleMessageListenerContainer.setTaskExecutor(threadPoolTaskExecutor());
return simpleMessageListenerContainer;
}


@Bean
public QueueMessageHandler queueMessageHandler() {
QueueMessageHandlerFactory queueMessageHandlerFactory = new QueueMessageHandlerFactory();
queueMessageHandlerFactory.setAmazonSqs(amazonSQSAsync());
QueueMessageHandler queueMessageHandler = queueMessageHandlerFactory.createQueueMessageHandler();
return queueMessageHandler;
}

最佳答案

QueueMessageHandler 扩展 AbstractMethodMessageHandler :

Abstract base class for HandlerMethod-based message handling. Provides most of the logic required to discover handler methods at startup, find a matching handler method at runtime for a given message and invoke it.

Also supports discovering and invoking exception handling methods to process exceptions raised during message handling.

关于java - QueueMessageHandler 的用途是什么,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/50103060/

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