新闻 Spring For Apache Kafka 2.1.0 和 1.3.2 发布 下载

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。
Spring For Apache Kafka 2.1.0 和 1.3.2 发布下载地址