从版本 3.0 开始，现在可以在同一主题上配置多个侦听器。 为此，必须使用自定义主题命名来将重试主题彼此隔离。 最好通过一个示例来说明这一点：
@RetryableTopic(...
retryTopicSuffix = "-listener1", dltTopicSuffix = "-listener1-dlt",
topicSuffixingStrategy = TopicSuffixingStrategy.SUFFIX_WITH_INDEX_VALUE)
@KafkaListener(id = "listener1", groupId = "group1", topics = TWO_LISTENERS_TOPIC, ...)
void listen1(String message, @Header(KafkaHeaders.RECEIVED_TOPIC) String receivedTopic) {
...
}
@RetryableTopic(...
retryTopicSuffix = "-listener2", dltTopicSuffix = "-listener2-dlt",
topicSuffixingStrategy = TopicSuffixingStrategy.SUFFIX_WITH_INDEX_VALUE)
@KafkaListener(id = "listener2", groupId = "group2", topics = TWO_LISTENERS_TOPIC, ...)
void listen2(String message, @Header(KafkaHeaders.RECEIVED_TOPIC) String receivedTopic) {
...
}这是可选的。
该框架将为每个侦听器配置和使用一组单独的重试主题。topicSuffixingStrategy