Spring For Apache Kafka 2.1.0 和 1.3.2 发布

Spring for Apache Kafka 2.1.0 已发布,同时发布的还有 1.3.2 和 2.0.2 维护版本,包含重要的 Bug 修复。

2.1.0 版本的主要将 kafka-clients 库升级到 1.0.0,以及一些改进:

  • Sometimes, when a message can’t be processed, you may wish to stop the container so the condition can be corrected and the message re-delivered. The framework now provides the ContainerStoppingErrorHandler for record listeners and ContainerStoppingBatchErrorHandler for batch listeners.

  • The KafkaAdmin now supports increasing partitions when a NewTopic bean is detected with a larger number of partitions than currently exist on the topic.

  • StringJsonMessageConverter and JsonSerializer/JsonDeserializer now pass and consume type information in Headers. This allows multiple types to be easily sent/received on the same topic:

@SpringBootApplication
public class Kafka21Application 

    public static void main(String[] args) 
        SpringApplication.run(Kafka21Application.class, args)
            .close();
    

    @Bean
    public ApplicationRunner runner(KafkaTemplate<Object, Object> template) 
        return args -> 
            template.send(MessageBuilder.withPayload(42)
                    .setHeader(KafkaHeaders.TOPIC, "blog")
                    .build());
            template.send(MessageBuilder.withPayload("43")
                    .setHeader(KafkaHeaders.TOPIC, "blog")
                    .build());
            Thread.sleep(5_000);
        ;
    }

    @Bean
    public StringJsonMessageConverter converter() 
        return new StringJsonMessageConverter();
    

    @Component
    @KafkaListener(id = "multi", topics = "blog")
    public static class Listener 

        @KafkaHandler
        public void intListener(Integer in) 
            System.out.println("Got an int: " + in);
        

        @KafkaHandler
        public void stringListener(String in) 
            System.out.println("Got a string: " + in);
        

    }

}

Got an int: 42
Got a string: 43

  • the JsonSerializer and JsonDeserializer can be configured using kafka properties for the producer/consumer.

更多详情请查阅发行主页。

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Spring For Apache Kafka 2.1.0 和 1.3.2 发布