本文环境如下：

操作系统：CentOS 6 32位

JDK版本：1.8.0_77 32位

Kafka版本：0.9.0.1(Scala 2.11)

1. maven依赖包

<dependency> <groupId>org.apache.kafka</groupId> <artifactId>kafka-clients</artifactId> <version>0.9.0.1</version></dependency>

2. 生产者代码

package com.lnho.example.kafka;import org.apache.kafka.clients.producer.KafkaProducer;import org.apache.kafka.clients.producer.Producer;import org.apache.kafka.clients.producer.ProducerRecord;import java.util.Properties;public class KafkaProducerExample { public static void main(String[] args) { Properties props = new Properties(); props.put("bootstrap.servers", "master:9092"); props.put("acks", "all"); props.put("retries", 0); props.put("batch.size", 16384); props.put("linger.ms", 1); props.put("buffer.memory", 33554432); props.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer"); props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer"); Producer<String, String> producer = new KafkaProducer<>(props); for(int i = 0; i < 100; i++) producer.send(new ProducerRecord<>("topic1", Integer.toString(i), Integer.toString(i))); producer.close(); }}

3. 消费者代码

package com.lnho.example.kafka;import org.apache.kafka.clients.consumer.ConsumerRecord;import org.apache.kafka.clients.consumer.ConsumerRecords;import org.apache.kafka.clients.consumer.KafkaConsumer;import java.util.Arrays;import java.util.Properties;public class KafkaConsumerExample { public static void main(String[] args) { Properties props = new Properties(); props.put("bootstrap.servers", "master:9092"); props.put("group.id", "test"); props.put("enable.auto.commit", "true"); props.put("auto.commit.interval.ms", "1000"); props.put("session.timeout.ms", "30000"); props.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer"); props.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer"); KafkaConsumer<String, String> consumer = new KafkaConsumer<>(props); consumer.subscribe(Arrays.asList("topic1")); while (true) { ConsumerRecords<String, String> records = consumer.poll(100); for (ConsumerRecord<String, String> record : records) System.out.printf("offset = %d, key = %s, value = %s\n", record.offset(), record.key(), record.value()); } }}

4. 执行程序

lib底下需要有：kafka-clients-0.9.0.1.jar log4j-1.2.17.jar slf4j-api-1.7.6.jar slf4j-log4j12-1.7.6.jar

生产者:

复制代码 代码如下:
java -classpath kafka-example-1.0-SNAPSHOT.jar:lib/* com.lnho.example.kafka.KafkaProducerExample

消费者:

复制代码 代码如下:
java -classpath kafka-example-1.0-SNAPSHOT.jar:lib/* com.lnho.example.kafka.KafkaConsumerExample

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。