Docker KafkaException:在kafka.tools.ConsoleProducer$LineMessageReader.readMessage的第1行中未找到密钥
简单地说,我创办了卡夫卡,成功地创建了一个主题,创办了一个启用了密钥的制作人。到现在为止,一直都还不错。我发送一个简单的消息,我得到Docker KafkaException:在kafka.tools.ConsoleProducer$LineMessageReader.readMessage的第1行中未找到密钥,docker,apache-kafka,apache-zookeeper,kafka-producer-api,confluent-platform,Docker,Apache Kafka,Apache Zookeeper,Kafka Producer Api,Confluent Platform,简单地说,我创办了卡夫卡,成功地创建了一个主题,创办了一个启用了密钥的制作人。到现在为止,一直都还不错。我发送一个简单的消息,我得到 root@kafka:/# kafka-console-producer --broker-list localhost:9092 --topic testkey --property "parse.key=true" propert y "key.separator=:" >1:fisrtmessage org.ap
root@kafka:/# kafka-console-producer --broker-list localhost:9092 --topic testkey --property "parse.key=true" propert
y "key.separator=:"
>1:fisrtmessage
org.apache.kafka.common.KafkaException: No key found on line 1: 1:fisrtmessage
at kafka.tools.ConsoleProducer$LineMessageReader.readMessage(ConsoleProducer.scala:275)
at kafka.tools.ConsoleProducer$.main(ConsoleProducer.scala:55)
at kafka.tools.ConsoleProducer.main(ConsoleProducer.scala)
root@kafka:/#
这是生产者和消费者。正如你所看到的,消费者没有收到信息,而生产商收到了信息
docker-compose.yml
version: '3'
services:
zookeeper:
image: confluentinc/cp-zookeeper:5.4.0
hostname: zookeeper
container_name: zookeeper
ports:
- "2181:2181"
environment:
ZOOKEEPER_CLIENT_PORT: 2181
ZOOKEEPER_TICK_TIME: 2000
broker:
image: confluentinc/cp-server:5.4.0
hostname: broker
container_name: broker
depends_on:
- zookeeper
ports:
- "9092:9092"
environment:
KAFKA_BROKER_ID: 1
KAFKA_ZOOKEEPER_CONNECT: 'zookeeper:2181'
KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://broker:29092,PLAINTEXT_HOST://localhost:9092
KAFKA_METRIC_REPORTERS: io.confluent.metrics.reporter.ConfluentMetricsReporter
KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
KAFKA_CONFLUENT_LICENSE_TOPIC_REPLICATION_FACTOR: 1
CONFLUENT_METRICS_REPORTER_BOOTSTRAP_SERVERS: broker:29092
CONFLUENT_METRICS_REPORTER_ZOOKEEPER_CONNECT: zookeeper:2181
CONFLUENT_METRICS_REPORTER_TOPIC_REPLICAS: 1
CONFLUENT_METRICS_ENABLE: 'true'
CONFLUENT_SUPPORT_CUSTOMER_ID: 'anonymous'
kafka-tools:
image: confluentinc/cp-kafka:5.4.0
hostname: kafka
container_name: kafka
command: ["tail", "-f", "/dev/null"]
network_mode: "host"
在第二次调用
属性
时,您对卡夫卡控制台制作人
的调用丢失了--
这意味着keySeparator不是您提供的(:
),而是返回默认值。根据控制台Producer的默认值,默认值为:
var keysepator=“\t”
由于您提供的字符串不包含任何制表符,它将抛出异常“在第行中找不到键…”,该异常在代码的这一部分执行。您在kafka console产品库的第二次属性调用中缺少
--
。它是固定的。请你指出答案好吗?由于在制作《制作人》时没有人抱怨,我认为这是成功的。