3. 编写Kafka消费者 接下来,我们编写一个简单的Kafka消费者,用于从指定的Topic消费消息。 import org.apache.kafka.clients.consumer.*; import org.apache.kafka.common.TopicPartition; import java.time.Duration; import java.util.Collections; import java.util.Properties; public class KafkaConsumerExample { pu...
servlet.context-path=/kafka 3、生产者和消费者 代码语言:javascript 代码运行次数:0 运行 AI代码解释 package com.example.kafkademo; import org.apache.kafka.clients.consumer.ConsumerRecord; import org.apache.kafka.clients.consumer.ConsumerRecords; import org.apache.kafka.clients.consumer.KafkaConsumer; ...
如果所有的消费者有不同的消费者组,则每一条记录都会广播到全部的消费者进行处理。 packagecom.example.rabbittest;importorg.apache.kafka.clients.consumer.ConsumerRecord;importorg.apache.kafka.clients.consumer.ConsumerRecords;importorg.apache.kafka.clients.consumer.KafkaConsumer;importorg.apache.kafka.common.seri...
步骤一:创建 KafkaConsumer 实例 首先,我们需要创建一个 KafkaConsumer 实例。KafkaConsumer 是用于从 Kafka 中拉取消息的主要类。 importorg.apache.kafka.clients.consumer.KafkaConsumer;importorg.apache.kafka.clients.consumer.ConsumerConfig;importjava.util.Properties;Propertiesprops=newProperties();props.put(Consum...
消费者代码KafkaConsumerExample.java: packagecom.bijian.test;importorg.apache.kafka.clients.consumer.ConsumerRecord;importorg.apache.kafka.clients.consumer.ConsumerRecords;importorg.apache.kafka.clients.consumer.KafkaConsumer;importjava.util.Arrays;importjava.util.Properties;publicclassKafkaConsumerExample {public...
import org.apache.kafka.clients.consumer.*; import java.util.Collections; import java.util.Properties; public class KafkaConsumerExample { public static void main(String[] args) { String bootstrapServers = "localhost:9092"; String topic = "my-topic"; // 设置Kafka消费者的配置属性 Properties pro...
/usr/hdp/current/kafka-broker/bin/kafka-topics.sh --create --replication-factor 2 --partitions 8 --topic test --zookeeper $KAFKAZKHOSTS Use the producer-consumer example to write records to the topic: java -jar kafka-producer-consumer.jar producer test $KAFKABROKERS ...
KafkaConsumer:和前文的KafkaProducer遥相呼应,用来创建一个消费者对象进行数据消费; ConsumerConfig:获取各种配置参数,如果不去配置,就是用默认的; ConsuemrRecord:每条数据都要封装成一个ConsumerRecord对象才可以进行消费。 那下面就开始写了,这个简单的demo一共分为四步: ...
put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer"); KafkaConsumer<String, String> consumer = new KafkaConsumer<>(props); consumer.subscribe(Arrays.asList("test")); while (true) { ConsumerRecords<String, String> records = consumer.poll(100); for (ConsumerRecord...
import kafka.consumer.KafkaStream; import kafka.javaapi.consumer.ConsumerConnector; import kafka.message.Message; import kafka.message.MessageAndMetadata; public class ConsumerSample { public static void main(String[] args) { // specify some consumer properties ...