Question

根据这个主题：
Kafka Spring Integration: Headers not coming for kafka consumer - 这对Kafka没有标头支持

spring.cloud.stream.kafka.binder.headers
  将由活页夹传输的自定义标头列表。

默认值：空。

我无法使用spring-cloud-stream-binder-kafka：1.2.0.RELEASE

发送日志：

MESSAGE (e23885fd-ffd9-42dc-ebe3-5a78467fee1f) SENT : 
GenericMessage [payload=..., 
headers={
   content-type=application/json, 
   correlationId=51dd90b1-76e6-4b8d-b667-da25f214f383, 
   id=e23885fd-ffd9-42dc-ebe3-5a78467fee1f, 
   contentType=application/json, 
   timestamp=1497535771673
}]

收到日志：

MESSAGE (448175f5-2b21-9a44-26b9-85f093b33f6b) RECEIVED BY HANDLER 1: 
GenericMessage [payload=..., 
headers={
    kafka_offset=36, 
    id=448175f5-2b21-9a44-26b9-85f093b33f6b, 
    kafka_receivedPartitionId=0, 
    contentType=application/json;charset=UTF-8, 
    kafka_receivedTopic=new_patient, timestamp=1497535771715
}]

MESSAGE (448175f5-2b21-9a44-26b9-85f093b33f6b) RECEIVED BY HANDLER 2 :
GenericMessage [payload=..., 
headers={
    kafka_offset=36, 
    id=448175f5-2b21-9a44-26b9-85f093b33f6b, 
    kafka_receivedPartitionId=0, 
    contentType=application/json;charset=UTF-8, 
    kafka_receivedTopic=new_patient, timestamp=1497535771715
}]

我希望在接收方看到相同的消息 id 并获得 correlationId 。

application.properties：

spring.cloud.stream.kafka.binder.headers=correlationId
spring.cloud.stream.bindings.newTest.destination=new_test
spring.cloud.stream.bindings.newTestCreated.destination=new_test
spring.cloud.stream.default.consumer.headerMode=embeddedHeaders
spring.cloud.stream.default.producer.headerMode=embeddedHeaders

发送消息：

@Publisher(channel = "testChannel")
public Object newTest(Object param) {
    ...
    return myObject;
}

Answer 1

是的，确实如此：http://docs.spring.io/spring-cloud-stream/docs/Chelsea.SR2/reference/htmlsingle/index.html#_consumer_properties

headerMode

设置为raw时，禁用输入上的标头解析。仅对本身不支持邮件头并需要标头嵌入的邮件中间件有效。当入站数据来自Spring Cloud Stream应用程序外部时很有用。

默认值：embeddedHeaders

但这已经是Spring Cloud Stream的故事，而不是Spring Kafka本身。

Spring Cloud Stream Kafka是否支持嵌入式标头？

1 个答案: