Java kafka producer API中的标题信息
我有一个json负载,我想在ProducerAPI中作为头发送它Java kafka producer API中的标题信息,java,apache-kafka,kafka-producer-api,Java,Apache Kafka,Kafka Producer Api,我有一个json负载,我想在ProducerAPI中作为头发送它 { "type": "record_created", "version": 1, "orgId": "", "userId": "", "userName": "", "correlationId": "", "jobId": "" } 上述有效载荷应作为报头发送 producer.send(new ProducerRecord<Integer, String>
{
"type": "record_created",
"version": 1,
"orgId": "",
"userId": "",
"userName": "",
"correlationId": "",
"jobId": ""
}
上述有效载荷应作为报头发送
producer.send(new ProducerRecord<Integer, String>(topic, messageNo, records,header)
producer.send(新ProducerRecord(主题、消息编号、记录、标题)
我们如何才能做到这一点?有两种方法
(一)
获取标题并添加标题
ProducerRecord<Integer, String> record = new ProducerRecord<Integer, String>("topic", 1, "message");
record.headers().add(new RecordHeader("type", "record_created".getBytes()));
record.headers().add(new RecordHeader("type", "record_created".getBytes()));
producer.send(record);
ProducerRecord记录=新的ProducerRecord(“主题”,1,“消息”);
record.headers().add(新的RecordHeader(“type”,“record_created.”getBytes());
record.headers().add(新的RecordHeader(“type”,“record_created.”getBytes());
制作人。发送(记录);
(二)
使用ProducerRecord(字符串主题、整数分区、K键、V值、Iterable头)
但是这样你就必须决定分区号了在2的情况下你不必决定分区号)-你可以传入
null
。